[A1] [A2]

EXHIBIT A-1

FORM OF CLASS [A1] [A2] CERTIFICATE

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC”), TO ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

SOLELY FOR U.S. FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE REPRESENTS OWNERSHIP OF A “REGULAR INTEREST” IN A “REAL ESTATE MORTGAGE INVESTMENT CONDUIT,” AS THOSE TERMS ARE DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL REVENUE CODE OF 1986 (THE “CODE”).

Series 2004-HE4, Class A_

Aggregate Certificate Principal Balance of the Class A_ Certificates as of the Issue Date:	$_____________
Pass-Through Rate:	Variable
Date of Pooling and Servicing Agreement:	June 1, 2004
Denomination:	$____________
First Distribution Date:	July 25, 2004
Servicer:	Litton Loan Servicing LP
Trustee:	U.S. Bank National Association
Issue Date:	June 8, 2004
No. ____	CUSIP: ____________

DISTRIBUTIONS IN REDUCTION OF THE CERTIFICATE PRINCIPAL BALANCE OF THIS CERTIFICATE MAY BE MADE MONTHLY AS SET FORTH HEREIN. ACCORDINGLY, THE OUTSTANDING CERTIFICATE PRINCIPAL BALANCE HEREOF AT ANY TIME MAY BE LESS THAN THE AMOUNT SHOWN ABOVE AS THE DENOMINATION OF THIS CERTIFICATE.

ASSET BACKED PASS THROUGH CERTIFICATE

evidencing a beneficial ownership interest in a Trust Fund (the “Trust Fund”) consisting primarily of a pool of conventional one- to four-family, fixed-rate and adjustable-rate, first and second lien residential mortgage loans (the “Mortgage Loans”) formed and sold by

ASSET BACKED SECURITIES CORPORATION

THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN ASSET BACKED SECURITIES CORPORATION, THE SERVICER, THE TRUSTEE OR ANY OF THEIR RESPECTIVE AFFILIATES. NEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE GUARANTEED BY ANY AGENCY OR INSTRUMENTALITY OF THE UNITED STATES.

This certifies that ____________ is the registered owner of a Percentage Interest (obtained by dividing the denomination of this Certificate by the aggregate Certificate Principal Balance of the Class [A1] [A2] Certificates as of the Issue Date) in that certain beneficial ownership interest evidenced by all the Class [A1] [A2] Certificates created pursuant to a Pooling and Servicing Agreement, dated as specified above (the “Agreement”), among Asset Backed Securities Corporation (hereinafter called the “Depositor,” which term includes any successor entity under the Agreement), the Seller, the Servicer, and the Trustee, a summary of certain of the pertinent provisions of which is set forth hereafter. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound.

Pursuant to the terms of the Agreement, distributions will be made on the 25th day of each month or, if such 25th day is not a Business Day, the Business Day immediately following (a “Distribution Date”), commencing on the First Distribution Date specified above, to the Person in whose name this Certificate is registered on the Record Date, in an amount equal to the product of the Percentage Interest evidenced by this Certificate and the amount required to be distributed to the Holders of Class [A1] [A2] Certificates on such Distribution Date pursuant to the Agreement.

All distributions to the Holder of this Certificate under the Agreement will be made or caused to be made by or on behalf of the Trustee by wire transfer in immediately available funds to the account of the Person entitled thereto if such Person shall have so notified the Trustee in writing at least five Business Days prior to the Record Date immediately prior to such Distribution Date, or otherwise by check mailed by first class mail to the address of the Person entitled thereto, as such name and address shall appear on the Certificate Register. Notwithstanding the above, the final distribution on this Certificate will be made after due notice by the Trustee of the pendency of such distribution and only upon presentation and surrender of this Certificate at the office or agency appointed by the Trustee for that purpose as provided in the Agreement.

The Pass-Through Rate applicable to the calculation of interest payable with respect to this Certificate on any Distribution Date shall equal a rate per annum equal to the lesser of (i) the One-Month LIBOR plus _____%, in the case of each Distribution Date through and including the Distribution Date on which the aggregate Stated Principal Balance of the Mortgage Loans (and properties acquired in respect thereof) remaining in the Trust Fund is reduced to less than 10% of the aggregate Stated Principal Balance of the Mortgage Loans as of the Cut-off Date, or One-Month LIBOR plus _____% per annum, in the case of any Distribution Date thereafter, and (ii) the related Net WAC Rate for such Distribution Date.

This Certificate is one of a duly authorized issue of Certificates designated as Asset Backed Pass Through Certificates of the Series specified on the face hereof (herein called the “Certificates”) and representing a Percentage Interest in the Class of Certificates specified on the face hereof equal to the denomination specified on the face hereof divided by the aggregate Certificate Principal Balance of the Class of Certificates specified on the face hereof.

The Certificates are limited in right of payment to certain collections and recoveries respecting the Mortgage Loans, all as more specifically set forth herein and in the Agreement. As provided in the Agreement, withdrawals from the Collection Account and the Distribution Account may be made from time to time for purposes other than distributions to Certificateholders, such purposes including, without limitation, reimbursement of advances made, or certain expenses incurred, with respect to the Mortgage Loans.

The Agreement permits, with certain exceptions and conditions provided therein, the amendment thereof and the modification of the rights and obligations of the Depositor, the Seller, the Servicer, the Trustee and the rights of the Certificateholders under the Agreement at any time by the Depositor, the Seller, the Servicer, and the Trustee with the consent of the Holders of Certificates entitled to at least 66% of the Voting Rights. Any such consent by the Holder of this Certificate shall be conclusive and binding on such Holder and upon all future Holders of this Certificate and of any Certificate issued upon the transfer hereof or in exchange herefor or in lieu hereof whether or not notation of such consent is made upon this Certificate. The Agreement also permits the amendment thereof, in certain limited circumstances, without the consent of the Holders of any of the Certificates.

As provided in the Agreement and subject to certain limitations therein set forth, the transfer of this Certificate is registrable in the Certificate Register upon surrender of this Certificate for registration of transfer at the offices or agencies appointed by the Trustee as provided in the Agreement, duly endorsed by, or accompanied by an assignment in the form below or other written instrument of transfer in form satisfactory to the Trustee and the Certificate Registrar duly executed by, the Holder hereof or such Holder’s attorney duly authorized in writing, and thereupon one or more new Certificates of the same Class in authorized denominations evidencing the same aggregate Percentage Interest will be issued to the designated transferee or transferees.

The Certificates are issuable in fully registered form only without coupons in Classes and denominations representing Percentage Interests specified in the Agreement. As provided in the Agreement and subject to certain limitations therein set forth, Certificates are exchangeable for new Certificates of the same Class in authorized denominations evidencing the same aggregate Percentage Interest, as requested by the Holder surrendering the same.

No service charge will be made for any such registration of transfer or exchange of Certificates, but the Trustee may require payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in connection with any transfer or exchange of Certificates.

The Depositor, the Seller, the Servicer, the Trustee, and the Certificate Registrar and any agent of the Depositor, the Seller, the Servicer, the Trustee, or the Certificate Registrar may treat the Person in whose name this Certificate is registered as the owner hereof for all purposes, and none of the Depositor, the Seller, the Servicer, the Trustee, the Certificate Registrar nor any such agent shall be affected by notice to the contrary.

The obligations created by the Agreement and the Trust Fund created thereby shall terminate upon payment to the Certificateholders of all amounts held by or on behalf of the Trustee and required to be paid to them pursuant to the Agreement following the earlier of (i) the final payment or other liquidation (or any advance with respect thereto) of the last Mortgage Loan remaining in the Trust Fund, and (ii) the purchase by the party designated in the Agreement at a price determined as provided in the Agreement from the Trust Fund of all the Mortgage Loans and all property acquired in respect of such Mortgage Loans. The Agreement permits, but does not require, the party designated in the Agreement to purchase from the Trust Fund all the Mortgage Loans and all property acquired in respect of any Mortgage Loan at a price determined as provided in the Agreement. The exercise of such right will effect early retirement of the Certificates; however, such right to purchase is subject to the aggregate Stated Principal Balance of the Mortgage Loans and any REO properties owned by the Trust at the time of purchase being less than 10% of the sum of the aggregate Stated Principal Balance of the Mortgage Loans at the Cut-off Date.

Unless the certificate of authentication hereon has been executed by the Certificate Registrar, by manual signature, this Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose.

IN WITNESS WHEREOF, the Trustee has caused this Certificate to be duly executed.

Dated: June __, 2004

U.S. BANK NATIONAL ASSOCIATION,

as Trustee

By:

Authorized Officer

CERTIFICATE OF AUTHENTICATION

This is one of the Classes of Certificates referred to in the within-mentioned Agreement.

U.S. BANK NATIONAL ASSOCIATION,

as Certificate Registrar

By:

Authorized Signatory

ABBREVIATIONS

The following abbreviations, when used in the inscription on the face of this instrument, shall be construed as though they were written out in full according to applicable laws or regulations:

TEN COM

- as tenants in common

UNIF GIFT MIN ACT -

Custodian

(Cust)

(Minor)

TEN ENT

- as tenants by the entireties

under Uniform Gifts

to Minors Act

JT TEN

- as joint tenants with right

if survivorship and not as

(State)

tenants in common

Additional abbreviations may also be used though not in the above list.

ASSIGNMENT

FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and transfer(s) unto

(Please print or typewrite name, address including postal zip code, and Taxpayer Identification Number of assignee)

a Percentage Interest equal to ____% evidenced by the within Asset Backed Pass Through Certificate and hereby authorize(s) the registration of transfer of such interest to assignee on the Certificate Register of the Trust Fund.

I (we) further direct the Certificate Registrar to issue a new Certificate of a like Percentage Interest and Class to the above named assignee and deliver such Certificate to the following address:

Dated:

Signature by or on behalf of assignor

Signature Guaranteed

DISTRIBUTION INSTRUCTIONS

The assignee should include the following for purposes of distribution:

Distributions shall be made, by wire transfer or otherwise, in immediately available funds to

for the account of , account number , or, if mailed by check, to .

Applicable statements should be mailed to

This information is provided by , the assignee named above, or , as its agent.

[M1] [M2] [M3] [M4] [M5] [M6] [M7] [M8] [M9] [M10]

EXHIBIT A-2

FORM OF CLASS [M1] [M2] [M3] [M4] [M5] [M6] [M7] [M8] [M9] [M10] CERTIFICATE

THIS CERTIFICATE IS SUBORDINATE TO THE CLASS A1, CLASS A2, CLASS A2A, CLASS A3, [CLASS M1] [, CLASS M2] [, CLASS M3] [,CLASS M4] [,CLASS M5] [,CLASS M6] [,CLASS M7] [, CLASS M8] [, CLASS M9] [AND CLASS M10] CERTIFICATES TO THE EXTENT DESCRIBED IN THE POOLING AND SERVICING AGREEMENT REFERRED TO HEREIN (THE “AGREEMENT”).

[FOR CLASS M4, CLASS M5, CLASS M6, CLASS M7, CLASS M8, CLASS M9 AND CLASS M10 CERTIFICATES][PURSUANT TO SECTION 5.02(c) OF THE POOLING AND SERVICING AGREEMENT REFERRED TO HEREIN (THE “AGREEMENT”), AN ERISA-RESTRICTED CERTIFICATE OR ANY INTEREST HEREIN MAY NOT BE TRANSFERRED UNLESS THE TRANSFEREE DELIVERS TO THE TRUSTEE (I) A REPRESENTATION LETTER TO THE EFFECT THAT SUCH TRANSFEREE IS NOT AN EMPLOYEE BENEFIT PLAN OR ARRANGEMENT SUBJECT TO THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED (“ERISA”) OR SECTION 4975 OF THE CODE OR A PERSON USING THE ASSETS OF SUCH A PLAN OR ARRANGEMENT OR (II) IF THE PURCHASER IS AN INSURANCE COMPANY AND THE CERTIFICATE HAS BEEN THE SUBJECT OF AN ERISA-QUALIFYING UNDERWRITING, A REPRESENTATION IN ACCORDANCE WITH THE PROVISIONS OF THE AGREEMENT OR (III) AN OPINION OF COUNSEL IN ACCORDANCE WITH THE PROVISIONS OF THE AGREEMENT. IN THE EVENT THE REPRESENTATIONS REFERRED TO IN THE PRECEDING SENTENCE ARE NOT FURNISHED, SUCH REPRESENTATION SHALL BE DEEMED TO HAVE BEEN MADE TO THE TRUSTEE BY THE TRANSFEREE’S ACCEPTANCE OF THIS CERTIFICATE, OR BY ANY BENEFICIAL OWNER WHO PURCHASES AN INTEREST IN THIS CERTIFICATE IN BOOK-ENTRY FORM. IN THE EVENT THAT A REPRESENTATION IS VIOLATED, OR ANY ATTEMPT TO TRANSFER THIS CERTIFICATE TO A PLAN OR ARRANGEMENT OR PERSON USING A PLAN’S OR ARRANGEMENT’S ASSETS IS ATTEMPTED WITHOUT THE DELIVERY TO THE TRUSTEE OF THE OPINION OF COUNSEL DESCRIBED ABOVE, THE ATTEMPTED TRANSFER OR ACQUISITION OF THIS CERTIFICATE SHALL BE VOID AND OF NO EFFECT.]

Series 2004-HE4, Class [M1] [M2] [M3] [M4] [M5] [M6] [M7] [M8] [M9] [M10]

Aggregate Certificate Principal Balance of the Class [M1] [M2] [M3] [M4] [M5] [M6] [M7] [M8] [M9] [M10] Certificates as of the Issue Date:	$_____________
Pass-Through Rate:	Variable
Date of Pooling and Servicing Agreement:	June 1, 2004
Denomination:	$____________
First Distribution Date:	July 25, 2004
Servicer:	Litton Loan Servicing LP
Trustee:	U.S. Bank National Association
Issue Date:	June 8, 2004
No. ____	CUSIP: ____________

ASSET BACKED PASS THROUGH CERTIFICATE

ASSET BACKED SECURITIES CORPORATION

This certifies that ____________ is the registered owner of a Percentage Interest (obtained by dividing the denomination of this Certificate by the aggregate Certificate Principal Balance of the [M1] [M2] [M3] [M4] [M5] [M6] [M7] [M8] [M9] [M10] Certificates as of the Issue Date) in that certain beneficial ownership interest evidenced by all the [M1] [M2] [M3] [M4] [M5] [M6] [M7] [M8] [M9] [M10] Certificates created pursuant to a Pooling and Servicing Agreement, dated as specified above (the “Agreement”), among Asset Backed Securities Corporation (hereinafter called the “Depositor,” which term includes any successor entity under the Agreement), the Seller, the Servicer, and the Trustee, a summary of certain of the pertinent provisions of which is set forth hereafter. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound.

Pursuant to the terms of the Agreement, distributions will be made on the 25th day of each month or, if such 25th day is not a Business Day, the Business Day immediately following (a “Distribution Date”), commencing on the First Distribution Date specified above, to the Person in whose name this Certificate is registered on the Record Date, in an amount equal to the product of the Percentage Interest evidenced by this Certificate and the amount required to be distributed to the Holders of Class [M1] [M2] [M3] [M4] [M5] [M6] [M7] [M8] [M9] [M10] Certificates on such Distribution Date pursuant to the Agreement.

The Agreement permits, with certain exceptions and conditions provided therein, the amendment thereof and the modification of the rights and obligations of the Depositor, the Seller, the Servicer, the Trustee and the rights of the Certificateholders under the Agreement at any time by the Depositor, the Seller, the Servicer and the Trustee with the consent of the Holders of Certificates entitled to at least 66% of the Voting Rights. Any such consent by the Holder of this Certificate shall be conclusive and binding on such Holder and upon all future Holders of this Certificate and of any Certificate issued upon the transfer hereof or in exchange herefor or in lieu hereof whether or not notation of such consent is made upon this Certificate. The Agreement also permits the amendment thereof, in certain limited circumstances, without the consent of the Holders of any of the Certificates.

No transfer of this Certificate to a Plan subject to ERISA or Section 4975 of the Code, any Person acting, directly or indirectly, on behalf of any such Plan or any Person using “Plan Assets” to acquire this Certificate shall be made except in accordance with Section 5.02(c) of the Agreement.

The Depositor, the Seller, the Servicer, the Trustee and the Certificate Registrar and any agent of the Depositor, the Seller, the Servicer, the Trustee or the Certificate Registrar may treat the Person in whose name this Certificate is registered as the owner hereof for all purposes, and none of the Depositor, the Seller, the Servicer, the Trustee, the Certificate Registrar nor any such agent shall be affected by notice to the contrary.

IN WITNESS WHEREOF, the Trustee has caused this Certificate to be duly executed.

Dated: June __, 2004

U.S. BANK NATIONAL ASSOCIATION,

as Trustee

By:

Authorized Officer

CERTIFICATE OF AUTHENTICATION

This is one of the Classes of Certificates referred to in the within-mentioned Agreement.

U.S. BANK NATIONAL ASSOCIATION,

as Certificate Registrar

By:

Authorized Signatory

ABBREVIATIONS

The following abbreviations, when used in the inscription on the face of this instrument, shall be construed as though they were written out in full according to applicable laws or regulations:

TEN COM

- as tenants in common

UNIF GIFT MIN ACT -

Custodian

(Cust)

(Minor)

TEN ENT

- as tenants by the entireties

under Uniform Gifts

to Minors Act

JT TEN

- as joint tenants with right

if survivorship and not as

(State)

tenants in common

Additional abbreviations may also be used though not in the above list.

ASSIGNMENT

FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and transfer(s) unto

(Please print or typewrite name, address including postal zip code, and Taxpayer Identification Number of assignee)

I (we) further direct the Certificate Registrar to issue a new Certificate of a like Percentage Interest and Class to the above named assignee and deliver such Certificate to the following address:

Dated:

Signature by or on behalf of assignor

Signature Guaranteed

DISTRIBUTION INSTRUCTIONS

The assignee should include the following for purposes of distribution:

Distributions shall be made, by wire transfer or otherwise, in immediately available funds to

for the account of , account number , or, if mailed by check, to .

Applicable statements should be mailed to

This information is provided by , the assignee named above, or , as its agent.

EXHIBIT A-3

[RESERVED]

EXHIBIT A-4

[RESERVED]

EXHIBIT A-5

FORM OF CLASS X CERTIFICATE

SOLELY FOR U.S. FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE REPRESENTS OWNERSHIP OF A “REGULAR INTEREST” IN A “REAL ESTATE MORTGAGE INVESTMENT CONDUIT”, AS THOSE TERMS ARE DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL REVENUE CODE OF 1986 (THE “CODE”).

THIS CERTIFICATE IS SUBORDINATE TO THE CLASS A CERTIFICATES AND THE MEZZANINE CERTIFICATES TO THE EXTENT DESCRIBED IN THE POOLING AND SERVICING AGREEMENT REFERRED TO HEREIN (THE “AGREEMENT”).

THIS CERTIFICATE HAS NOT BEEN AND WILL NOT BE REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR THE SECURITIES LAWS OF ANY STATE AND MAY NOT BE RESOLD OR TRANSFERRED UNLESS IT IS REGISTERED PURSUANT TO SUCH ACT AND LAWS OR IS SOLD OR TRANSFERRED IN TRANSACTIONS THAT ARE EXEMPT FROM REGISTRATION UNDER SUCH ACT AND UNDER APPLICABLE STATE LAW AND IS TRANSFERRED IN ACCORDANCE WITH THE PROVISIONS OF SECTION 5.02 OF THE AGREEMENT.

PURSUANT TO SECTION 5.02(c) OF THE AGREEMENT, AN ERISA-RESTRICTED CERTIFICATE OR ANY INTEREST HEREIN MAY NOT BE TRANSFERRED UNLESS THE TRANSFEREE DELIVERS TO THE TRUSTEE (I) A REPRESENTATION LETTER TO THE EFFECT THAT SUCH TRANSFEREE IS NOT AN EMPLOYEE BENEFIT PLAN OR ARRANGEMENT SUBJECT TO THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED (“ERISA”) OR SECTION 4975 OF THE CODE OR A PERSON USING THE ASSETS OF SUCH A PLAN OR ARRANGEMENT OR (II) IF THE PURCHASER IS AN INSURANCE COMPANY AND THE CERTIFICATE HAS BEEN THE SUBJECT OF AN ERISA-QUALIFYING UNDERWRITING, A REPRESENTATION IN ACCORDANCE WITH THE PROVISIONS OF THE AGREEMENT OR (III) AN OPINION OF COUNSEL IN ACCORDANCE WITH THE PROVISIONS OF THE AGREEMENT. IN THE EVENT THE REPRESENTATIONS REFERRED TO IN THE PRECEDING SENTENCE ARE NOT FURNISHED, SUCH REPRESENTATION SHALL BE DEEMED TO HAVE BEEN MADE TO THE TRUSTEE BY THE TRANSFEREE’S ACCEPTANCE OF THIS CERTIFICATE, OR BY ANY BENEFICIAL OWNER WHO PURCHASES AN INTEREST IN THIS CERTIFICATE IN BOOK-ENTRY FORM. IN THE EVENT THAT A REPRESENTATION IS VIOLATED, OR ANY ATTEMPT TO TRANSFER THIS CERTIFICATE TO A PLAN OR ARRANGEMENT OR PERSON USING A PLAN’S OR ARRANGEMENT’S ASSETS IS ATTEMPTED WITHOUT THE DELIVERY TO THE TRUSTEE OF THE OPINION OF COUNSEL DESCRIBED ABOVE, THE ATTEMPTED TRANSFER OR ACQUISITION OF THIS CERTIFICATE SHALL BE VOID AND OF NO EFFECT.

THIS CERTIFICATE HAS NO PRINCIPAL BALANCE.

Series 2004-HE4, Class X

Aggregate Percentage Interest of the Class X Certificates as of the Issue Date:	______%
Pass-Through Rate:	Variable
Date of Pooling and Servicing Agreement:	June 1, 2004
Denomination:	$____________
First Distribution Date:	July 25, 2004
Servicer:	Litton Loan Servicing LP
Trustee:	U.S. Bank National Association
Issue Date:	June 8, 2004
No. ____	CUSIP: ____________

ASSET BACKED PASS THROUGH CERTIFICATE

ASSET BACKED SECURITIES CORPORATION

This certifies that ________________ is the registered owner of a Percentage Interest in that certain beneficial ownership interest evidenced by all the Class X Certificates created pursuant to a Pooling and Servicing Agreement, dated as specified above (the “Agreement”), among Asset Backed Securities Corporation (hereinafter called the “Depositor,” which term includes any successor entity under the Agreement), the Seller, the Servicer, and the Trustee, a summary of certain of the pertinent provisions of which is set forth hereafter. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound.

Pursuant to the terms of the Agreement, distributions will be made on the 25th day of each month or, if such 25th day is not a Business Day, the Business Day immediately following (a “Distribution Date”), commencing on the First Distribution Date specified above, to the Person in whose name this Certificate is registered on the Record Date, in an amount equal to the product of the Percentage Interest evidenced by this Certificate and the amount required to be distributed to the Holders of Class X Certificates on such Distribution Date pursuant to the Agreement.

The Agreement permits, with certain exceptions and conditions provided therein, the amendment thereof and the modification of the rights and obligations of the Depositor, the Servicer, the Trustee and the rights of the Certificateholders under the Agreement at any time by the Depositor, the Servicer and the Trustee with the consent of the Holders of Certificates entitled to at least 66% of the Voting Rights. Any such consent by the Holder of this Certificate shall be conclusive and binding on such Holder and upon all future Holders of this Certificate and of any Certificate issued upon the transfer hereof or in exchange herefor or in lieu hereof whether or not notation of such consent is made upon this Certificate. The Agreement also permits the amendment thereof, in certain limited circumstances, without the consent of the Holders of any of the Certificates.

No transfer of this Certificate shall be made unless the transfer is made pursuant to an effective registration statement under the Securities Act of 1933, as amended (the “1933 Act”), and an effective registration or qualification under applicable state securities laws, or is made in a transaction that does not require such registration or qualification. In the event that such a transfer of this Certificate is to be made without registration or qualification, the Trustee and the Certificate Registrar shall require receipt of (i) if such transfer is purportedly being made in reliance upon Rule 144A under the 1933 Act, written certifications from the Holder of the Certificate desiring to effect the transfer, and from such Holder’s prospective transferee, substantially in the forms attached to the Agreement as Exhibit F-1, and (ii) in all other cases, an Opinion of Counsel satisfactory to it that such transfer may be made without such registration or qualification (which Opinion of Counsel shall not be an expense of the Trust Fund or of the Depositor, the Trustee or the Servicer in their respective capacities as such), together with copies of the written certification(s) of the Holder of the Certificate desiring to effect the transfer and/or such Holder’s prospective transferee upon which such Opinion of Counsel is based. None of the Depositor, the Certificate Registrar or the Trustee is obligated to register or qualify the Class of Certificates specified on the face hereof under the 1933 Act or any other securities law or to take any action not otherwise required under the Agreement to permit the transfer of such Certificates without registration or qualification. Any Holder desiring to effect a transfer of this Certificate shall be required to indemnify the Trustee, the Depositor, the Certificate Registrar and the Servicer against any liability that may result if the transfer is not so exempt or is not made in accordance with such federal and state laws.

No service charge will be made for any such registration of transfer or exchange of Certificates, but the Certificate Registrar may require payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in connection with any transfer or exchange of Certificates.

Unless the certificate of authentication hereon has been executed by the Certificate Registrar, by manual signature, this Certificate shall not be entitled to any benefit under the Agreement.

IN WITNESS WHEREOF, the Trustee has caused this Certificate to be duly executed.

Dated: June __, 2004

U.S. BANK NATIONAL ASSOCIATION,

as Trustee

By:

Authorized Officer

CERTIFICATE OF AUTHENTICATION

This is one of the Classes of Certificates referred to in the within-mentioned Agreement.

U.S. BANK NATIONAL ASSOCIATION,

as Certificate Registrar

By:

Authorized Signatory

ABBREVIATIONS

The following abbreviations, when used in the inscription on the face of this instrument, shall be construed as though they were written out in full according to applicable laws or regulations:

TEN COM

- as tenants in common

UNIF GIFT MIN ACT -

Custodian

(Cust)

(Minor)

TEN ENT

- as tenants by the entireties

under Uniform Gifts

to Minors Act

JT TEN

- as joint tenants with right

if survivorship and not as

(State)

tenants in common

Additional abbreviations may also be used though not in the above list.

ASSIGNMENT

FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and transfer(s) unto

(Please print or typewrite name, address including postal zip code, and Taxpayer Identification Number of assignee)

I (we) further direct the Certificate Registrar to issue a new Certificate of a like Percentage Interest and Class to the above named assignee and deliver such Certificate to the following address:

Dated:

Signature by or on behalf of assignor

Signature Guaranteed

DISTRIBUTION INSTRUCTIONS

The assignee should include the following for purposes of distribution:

Distributions shall be made, by wire transfer or otherwise, in immediately available funds to

for the account of , account number , or, if mailed by check, to .

Applicable statements should be mailed to

This information is provided by , the assignee named above, or , as its agent.

EXHIBIT A-6

FORM OF CLASS P CERTIFICATE

Series 2004-HE4, Class P

Aggregate Certificate Principal Balance of the Class P Certificates as of the Issue Date:	$100.00
Date of Pooling and Servicing Agreement:	June 1, 2004
Denomination:	$____________
First Distribution Date:	July 25, 2004
Servicer:	Litton Loan Servicing LP
Trustee:	U.S. Bank National Association
Issue Date:	June 8, 2004
No. ____	CUSIP:

ASSET BACKED PASS THROUGH CERTIFICATE

ASSET BACKED SECURITIES CORPORATION

This certifies that _____________ is the registered owner of a Percentage Interest (obtained by dividing the denomination of this Certificate by the aggregate Certificate Principal Balance of the Class P Certificates as of the Issue Date) in that certain beneficial ownership interest evidenced by all the Class P Certificates created pursuant to a Pooling and Servicing Agreement, dated as specified above (the “Agreement”), among Asset Backed Securities Corporation (hereinafter called the “Depositor,” which term includes any successor entity under the Agreement), the Seller, the Servicer, and the Trustee, a summary of certain of the pertinent provisions of which is set forth hereafter. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound.

Pursuant to the terms of the Agreement, distributions will be made on the 25th day of each month or, if such 25th day is not a Business Day, the Business Day immediately following (a “Distribution Date”), commencing on the First Distribution Date specified above, to the Person in whose name this Certificate is registered on the Record Date, in an amount equal to the product of the Percentage Interest evidenced by this Certificate and the amount required to be distributed to the Holders of Class P Certificates on such Distribution Date pursuant to the Agreement.

Unless the certificate of authentication hereon has been executed by the Certificate Registrar, by manual signature, this Certificate shall not be entitled to any benefit under the Agreement.

IN WITNESS WHEREOF, the Trustee has caused this Certificate to be duly executed.

Dated: June __, 2004

U.S. BANK NATIONAL ASSOCIATION,

as Trustee

By:

Authorized Officer

CERTIFICATE OF AUTHENTICATION

This is one of the Class P Certificates referred to in the within-mentioned Agreement.

U.S. BANK NATIONAL ASSOCIATION,

as Certificate Registrar

By:

Authorized Signatory

ABBREVIATIONS

The following abbreviations, when used in the inscription on the face of this instrument, shall be construed as though they were written out in full according to applicable laws or regulations:

TEN COM

- as tenants in common

UNIF GIFT MIN ACT -

Custodian

(Cust)

(Minor)

TEN ENT

- as tenants by the entireties

under Uniform Gifts

to Minors Act

JT TEN

- as joint tenants with right

if survivorship and not as

(State)

tenants in common

Additional abbreviations may also be used though not in the above list.

ASSIGNMENT

FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and transfer(s) unto

(Please print or typewrite name, address including postal zip code, and Taxpayer Identification Number of assignee)

I (we) further direct the Certificate Registrar to issue a new Certificate of a like Percentage Interest and Class to the above named assignee and deliver such Certificate to the following address:

Dated:

Signature by or on behalf of assignor

Signature Guaranteed

DISTRIBUTION INSTRUCTIONS

The assignee should include the following for purposes of distribution:

Distributions shall be made, by wire transfer or otherwise, in immediately available funds to

for the account of , account number , or, if mailed by check, to .

Applicable statements should be mailed to

This information is provided by , the assignee named above, or , as its agent.

EXHIBIT A-7

[RESERVED]

EXHIBIT A-8

[RESERVED]

EXHIBIT A-9

[RESERVED]

EXHIBIT A-10

FORM OF CLASS R CERTIFICATE

THIS CERTIFICATE MAY NOT BE TRANSFERRED TO A NON-UNITED STATES PERSON.

SOLELY FOR U.S. FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE REPRESENTS OWNERSHIP OF A “RESIDUAL INTEREST” IN A “REAL ESTATE MORTGAGE INVESTMENT CONDUIT” (“REMIC”), AS THOSE TERMS ARE DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL REVENUE CODE OF 1986 (THE “CODE”).

ANY RESALE, TRANSFER OR OTHER DISPOSITION OF THIS CERTIFICATE MAY BE MADE ONLY IN ACCORDANCE WITH THE PROVISIONS OF SECTION 5.02 OF THE AGREEMENT.

ANY RESALE, TRANSFER OR OTHER DISPOSITION OF THIS CERTIFICATE MAY BE MADE ONLY IF THE PROPOSED TRANSFEREE PROVIDES (I) AN AFFIDAVIT TO THE TRUSTEE THAT (A) SUCH TRANSFEREE IS NOT (1) THE UNITED STATES OR ANY POSSESSION THEREOF, ANY STATE OR POLITICAL SUBDIVISION THEREOF, ANY FOREIGN GOVERNMENT, ANY INTERNATIONAL ORGANIZATION, OR ANY AGENCY OR INSTRUMENTALITY OF ANY OF THE FOREGOING, (2) ANY ORGANIZATION (OTHER THAN A COOPERATIVE DESCRIBED IN SECTION 521 OF THE CODE) THAT IS EXEMPT FROM THE TAX IMPOSED BY CHAPTER 1 OF THE CODE UNLESS SUCH ORGANIZATION IS SUBJECT TO THE TAX IMPOSED BY SECTION 511 OF THE CODE, (3) ANY ORGANIZATION DESCRIBED IN SECTION 1381(a)(2)(C) OF THE CODE (ANY SUCH PERSON DESCRIBED IN THE FOREGOING CLAUSES (1), (2) OR (3) SHALL HEREINAFTER BE REFERRED TO AS A “DISQUALIFIED ORGANIZATION”) OR (4) AN AGENT OF A DISQUALIFIED ORGANIZATION AND (B) NO PURPOSE OF SUCH TRANSFER IS TO IMPEDE THE ASSESSMENT OR COLLECTION OF TAX, AND (II) SUCH TRANSFEREE SATISFIES CERTAIN ADDITIONAL CONDITIONS RELATING TO THE FINANCIAL CONDITION OF THE PROPOSED TRANSFEREE. NOTWITHSTANDING THE REGISTRATION IN THE CERTIFICATE REGISTER OF ANY TRANSFER, SALE OR OTHER DISPOSITION OF THIS CERTIFICATE TO A DISQUALIFIED ORGANIZATION OR AN AGENT OF A DISQUALIFIED ORGANIZATION, SUCH REGISTRATION SHALL BE DEEMED TO BE OF NO LEGAL FORCE OR EFFECT WHATSOEVER AND SUCH PERSON SHALL NOT BE DEEMED TO BE A CERTIFICATEHOLDER FOR ANY PURPOSE HEREUNDER, INCLUDING, BUT NOT LIMITED TO, THE RECEIPT OF DISTRIBUTIONS ON THIS CERTIFICATE. EACH HOLDER OF THIS CERTIFICATE BY ACCEPTANCE HEREOF SHALL BE DEEMED TO HAVE CONSENTED TO THE PROVISIONS OF THIS PARAGRAPH AND THE PROVISIONS OF SECTION 5.02(d) OF THE AGREEMENT. ANY PERSON THAT IS A DISQUALIFIED ORGANIZATION IS PROHIBITED FROM ACQUIRING BENEFICIAL OWNERSHIP OF THIS CERTIFICATE.

Series 2004-HE4, Class R

Aggregate Percentage Interest of the Class R Certificates as of the Issue Date:	100.00%
Date of Pooling and Servicing Agreement:	June 1, 2004
Percentage Interest of this Class R Certificate:	100.00%
First Distribution Date:	July 25, 2004
Servicer:	Litton Loan Servicing LP
Trustee:	U.S. Bank National Association
Issue Date:	June 8, 2004
No. ____	CUSIP: ____________

ASSET BACKED PASS THROUGH CERTIFICATE

ASSET BACKED SECURITIES CORPORATION

This certifies that ______________ is the registered owner of a Percentage Interest (obtained by dividing the denomination of this Certificate by the aggregate Certificate Principal Balance of the Class R Certificates as of the Issue Date) in that certain beneficial ownership interest evidenced by all the Class R Certificates created pursuant to a Pooling and Servicing Agreement, dated as specified above (the “Agreement”), among Asset Backed Securities Corporation (hereinafter called the “Depositor,” which term includes any successor entity under the Agreement), the Seller, the Servicer, and the Trustee, a summary of certain of the pertinent provisions of which is set forth hereafter. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound.

Pursuant to the terms of the Agreement, distributions will be made on the 25th day of each month or, if such 25th day is not a Business Day, the Business Day immediately following (a “Distribution Date”), commencing on the First Distribution Date specified above, to the Person in whose name this Certificate is registered on the Record Date, in an amount equal to the product of the Percentage Interest evidenced by this Certificate and the amount required to be distributed to the Holders of Class R Certificates on such Distribution Date pursuant to the Agreement.

No transfer of this Certificate shall be made unless the transfer is made pursuant to an effective registration statement under the Securities Act of 1933, as amended (the “1933 Act”), and an effective registration or qualification under applicable state securities laws, or is made in a transaction that does not require such registration or qualification. In the event that such a transfer of this Certificate is to be made without registration or qualification, the Trustee shall require receipt of (i) if such transfer is purportedly being made in reliance upon Rule 144A under the 1933 Act, written certifications from the Holder of the Certificate desiring to effect the transfer, and from such Holder’s prospective transferee, substantially in the forms attached to the Agreement as Exhibit F-1, and (ii) in all other cases, an Opinion of Counsel satisfactory to it that such transfer may be made without such registration or qualification (which Opinion of Counsel shall not be an expense of the Trust Fund or of the Depositor, the Trustee or the Servicer in their respective capacities as such), together with copies of the written certification(s) of the Holder of the Certificate desiring to effect the transfer and/or such Holder’s prospective transferee upon which such Opinion of Counsel is based. Neither the Depositor nor the Trustee is obligated to register or qualify the Class of Certificates specified on the face hereof under the 1933 Act or any other securities law or to take any action not otherwise required under the Agreement to permit the transfer of such Certificates without registration or qualification. Any Holder desiring to effect a transfer of this Certificate shall be required to indemnify the Trustee, the Depositor and the Servicer against any liability that may result if the transfer is not so exempt or is not made in accordance with such federal and state laws.

Prior to registration of any transfer, sale or other disposition of this Certificate, the proposed transferee shall provide to the Trustee (i) an affidavit to the effect that such transferee is any Person other than a Disqualified Organization or the agent (including a broker, nominee or middleman) of a Disqualified Organization, and (ii) a certificate that acknowledges that (A) the Class R Certificates have been designated as a residual interest in a REMIC, (B) it will include in its income a pro rata share of the net income of the Trust Fund and that such income may be an “excess inclusion,” as defined in the Code, that, with certain exceptions, cannot be offset by other losses or benefits from any tax exemption, and (C) it expects to have the financial means to satisfy all of its tax obligations including those relating to holding the Class R Certificates. Notwithstanding the registration in the Certificate Register of any transfer, sale or other disposition of this Certificate to a Disqualified Organization or an agent (including a broker, nominee or middleman) of a Disqualified Organization, such registration shall be deemed to be of no legal force or effect whatsoever and such Person shall not be deemed to be a Certificateholder for any purpose, including, but not limited to, the receipt of distributions in respect of this Certificate.

The Holder of this Certificate, by its acceptance hereof, shall be deemed to have consented to the provisions of Section 5.02 of the Agreement and to any amendment of the Agreement deemed necessary by counsel of the Depositor to ensure that the transfer of this Certificate to any Person other than a Permitted Transferee or any other Person will not cause the Trust Fund to cease to qualify as a REMIC or cause the imposition of a tax upon the REMIC.

IN WITNESS WHEREOF, the Trustee has caused this Certificate to be duly executed.

Dated: June __, 2004

U.S. BANK NATIONAL ASSOCIATION,

as Trustee

By:

Authorized Officer

CERTIFICATE OF AUTHENTICATION

This is one of the Classes of Certificates referred to in the within-mentioned Agreement.

U.S. BANK NATIONAL ASSOCIATION,

as Certificate Registrar

By:

Authorized Signatory

ABBREVIATIONS

The following abbreviations, when used in the inscription on the face of this instrument, shall be construed as though they were written out in full according to applicable laws or regulations:

TEN COM

- as tenants in common

UNIF GIFT MIN ACT -

Custodian

(Cust)

(Minor)

TEN ENT

- as tenants by the entireties

under Uniform Gifts

to Minors Act

JT TEN

- as joint tenants with right

if survivorship and not as

(State)

tenants in common

Additional abbreviations may also be used though not in the above list.

ASSIGNMENT

FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and transfer(s) unto

(Please print or typewrite name, address including postal zip code, and Taxpayer Identification Number of assignee)

I (we) further direct the Certificate Registrar to issue a new Certificate of a like Percentage Interest and Class to the above named assignee and deliver such Certificate to the following address:

Dated:

Signature by or on behalf of assignor

Signature Guaranteed

DISTRIBUTION INSTRUCTIONS

The assignee should include the following for purposes of distribution:

Distributions shall be made, by wire transfer or otherwise, in immediately available funds to

for the account of , account number , or, if mailed by check, to .

Applicable statements should be mailed to

This information is provided by , the assignee named above, or , as its agent.

EXHIBIT B

[RESERVED]

EXHIBIT C-1

FORM OF TRUST RECEIPT AND INITIAL CERTIFICATION

, 2004

Asset Backed Securities Corporation

Eleven Madison Avenue, 4th Floor

New York, New York 10010

DLJ Mortgage Capital, Inc.

Eleven Madison Avenue, 4th Floor

New York, New York 10010

Litton Loan Servicing LP

4828 Loop Central Drive

Houston, TX 77081

U.S. Bank National Association

60 Livingston Avenue

St. Paul, Minnesota 55105

Attention: Corporate Trust Services – ABSC 2004-HE4

Re:

Pooling and Servicing Agreement, dated as of June 1, 2004 (“Pooling and

Servicing Agreement”), among Asset Backed Securities Corporation, DLJ

Mortgage Capital, Inc., Litton Loan Servicing LP and U.S. Bank National

Association (the “Trustee”).

Ladies and Gentlemen:

In accordance with the provisions of the above-referenced Pooling and Servicing Agreement, the undersigned, as the Trustee, hereby certifies that as to each Mortgage Loan described in the Mortgage Loan Schedule attached as Exhibit 5 to the Pooling and Servicing Agreement and a copy of which is attached hereto, it has reviewed the Custodial File and has determined that (i) all documents listed in Section 2 of the Pooling and Servicing Agreement, to the extent applicable, are in its possession (subject to any exceptions listed herein), (ii) such documents have been reviewed by it and appear regular on their face and relate to such Mortgage Loan, (iii) each Mortgage Note has been endorsed as provided in the Pooling and Servicing Agreement, (iv) each Custodial File includes an Assignment of Mortgage in blank as provided in the Pooling and Servicing Agreement and (v) based on its examination, the foregoing documents on their face satisfy the requirements set forth in Section 2 of the Pooling and Servicing Agreement Agreement. The Trustee makes no representations as to (i) the validity, legality, enforceability, sufficiency, due authorization or genuineness of any of the documents contained in each Custodial File or of any of the Mortgage Loans or (ii) the collectability, insurability, effectiveness or suitability of any such Mortgage Loan.

The Trustee will accept and act on instructions with respect to the Mortgage Loans subject hereto upon surrender of this Trust Receipt and Initial Certification at its office at 60 Livingston Avenue, St. Paul, Minnesota 55105.

All terms used herein shall have the meanings ascribed to them in the above-referenced O Pooling and Servicing Agreement Agreement.

U.S. BANK NATIONAL ASSOCIATION

as Trustee

By:

Name:

Title:

EXHIBIT C-2

TRUST RECEIPT AND FINAL CERTIFICATION

, 2004

Asset Backed Securities Corporation

Eleven Madison Avenue, 4th Floor

New York, New York 10010

DLJ Mortgage Capital, Inc.

Eleven Madison Avenue, 4th Floor

New York, New York 10010

Litton Loan Servicing LP

4828 Loop Central Drive

Houston, TX 77081

U.S. Bank National Association

60 Livingston Avenue

St. Paul, Minnesota 55105

Attention: Corporate Trust Services – ABSC 2004-HE4

Re:

Pooling and Servicing Agreement, dated as of June 1, 2004 (“Pooling and Servicing Agreement”), among Asset Backed Securities Corporation, DLJ Mortgage Capital, Inc., Litton Loan Servicing LP and U.S. Bank National Association (the “Trustee”).

Ladies and Gentlemen:

All terms used herein shall have the meanings ascribed to them in the above-referenced Pooling and Servicing Agreement.

U.S. BANK NATIONAL ASSOCIATION,

as Trustee

By:

Name:

Title:

EXHIBIT D

FORM OF MORTGAGE LOAN PURCHASE AGREEMENT

[ON FILE AT THE OFFICES OF MCKEE NELSON LLP]

EXHIBIT E-1

FORM OF REQUEST FOR RELEASE OF DOCUMENTS AND RECEIPT

To: [Address]

Re:

In connection with the administration of the Mortgage Loans held by U.S. Bank National Association, as Trustee, pursuant to the provisions of the above-referenced Pooling and Servicing Agreement, we request the release, and acknowledge receipt, of the (Mortgage File/[specify documents]) for the Mortgage Loan described below, for the reason indicated.

Mortgagor’s Name Address & Zip Code:

Mortgage Loan Number:

Send Custodial File to:

Reason for Requesting Documents (check one)

__1.

Mortgage Loan Paid in Full. (The Servicer hereby certifies that all amounts received in connection therewith have been credited to the Collection Account as provided in the Pooling and Servicing Agreement.)

__2.

Mortgage Loan Purchase Pursuant to Section 2.03 or 3.16(c) of the Pooling and Servicing Agreement. (The Servicer hereby certifies that the repurchase price has been credited to the Collection Account as provided in the Pooling and Servicing Agreement.)

__3.

Mortgage Loan Liquidated By (The Servicer hereby certifies that all proceeds of foreclosure, insurance, condemnation or other liquidation have been finally received and credited to the Collection Account pursuant to the Pooling and Servicing Agreement.)

__4.

Mortgage Loan in Foreclosure

__5.

Other (explain)

If box 1, 2 or 3 above is checked, and if all or part of the Mortgage File was previously released to us, please release to us our previous request and receipt on file with you, as well as any additional documents in your possession relating to the specified Mortgage Loan.

Upon written request, the Trustee will acknowledge the return of any or all of the above documents in its custody.

Capitalized terms used but not defined herein have the meanings ascribed to them in the Pooling and Servicing Agreement, dated June 1, 2004 (the “Pooling and Servicing Agreement”), among Asset Backed Securities Corporation, as depositor (the “Depositor”), DLJ Mortgage Capital, Inc., as seller (the “Seller”), Litton Loan Servicing LP, as servicer (the “Servicer”) and U.S. Bank National Association, as trustee (the “Trustee”).

[SERVICER]

By:

Name:

Title:

Date:

(If more than 30 Mortgage Files requested by the Servicer)

Authorization by the Trustee

U.S. BANK NATIONAL ASSOCIATION,

as Trustee

By:

Name:

Title:

Date:

EXHIBIT E-2

[RESERVED]

EXHIBIT F-1

FORM OF TRANSFEROR REPRESENTATION LETTER

[Date]

U.S. Bank National Association

60 Livingston Avenue

St. Paul, Minnesota 55105

Attention: Corporate Trust Services – ABSC 2004-HE4

Re:

Asset Backed Securities Corporation,

Asset Backed Pass-Through Certificates, Series 2004-HE4,

Class ___, representing a ___% Class ___ Percentage Interest

Ladies and Gentlemen:

In connection with the transfer by (the “Transferor”) to (the “Transferee”) of the captioned Asset Backed Pass-Through Certificates (the “Certificates”), the Transferor hereby certifies as follows:

Neither the Transferor nor anyone acting on its behalf has (a) offered, pledged, sold, disposed of or otherwise transferred any Certificate, any interest in any Certificate or any other similar security to any person in any manner, (b) has solicited any offer to buy or to accept a pledge, disposition or other transfer of any Certificate, any interest in any Certificate or any other similar security from any person in any manner, (c) has otherwise approached or negotiated with respect to any Certificate, any interest in any Certificate or any other similar security with any person in any manner, (d) has made any general solicitation by means of general advertising or in any other manner, (e) has taken any other action, that (in the case of each of subclauses (a) through (e) above) would constitute a distribution of the Certificates under the Securities Act of 1933, as amended (the “1933 Act”), or would render the disposition of any Certificate a violation of Section 5 of the 1933 Act or any state securities law or would require registration or qualification pursuant thereto. The Transferor will not act, nor has it authorized or will it authorize any person to act, in any manner set forth in the foregoing sentence with respect to any Certificate. The Transferor will not sell or otherwise transfer any of the Certificates, except in compliance with the provisions of that certain Pooling and Servicing Agreement, dated as of June 1, 2004, among Asset Backed Securities Corporation as Depositor, DLJ Mortgage Capital, Inc. as Seller, Litton Loan Servicing LP as Servicer and U.S. Bank National Association, as Trustee (the “Pooling and Servicing Agreement”), pursuant to which the Certificates were issued.

Capitalized terms used but not defined herein shall have the meanings assigned thereto in the Pooling and Servicing Agreement.

Very truly yours,

[Transferor]

By:

Name:

Title:

FORM OF TRANSFEREE REPRESENTATION LETTER

[Date]

U.S. Bank National Association

60 Livingston Avenue

St. Paul, Minnesota 55105

Attention: Corporate Trust Services – ABSC 2004-HE4

Re:

Asset Backed Securities Corporation,

Asset Backed Pass-Through Certificates, Series 2004-HE4,

Class ___, representing a ___% Class ___ Percentage Interest

Ladies and Gentlemen:

In connection with the purchase from (the “Transferor”) on the date hereof of the captioned trust certificates (the “Certificates”), (the “Transferee”) hereby certifies as follows:

The Transferee is a “qualified institutional buyer” as that term is defined in Rule 144A (“Rule 144A”) under the Securities Act of 1933 (the “1933 Act”) and has completed either of the forms of certification to that effect attached hereto as Annex 1 or Annex 2. The Transferee is aware that the sale to it is being made in reliance on Rule 144A. The Transferee is acquiring the Certificates for its own account or for the account of a qualified institutional buyer, and understands that such Certificate may be resold, pledged or transferred only (i) to a person reasonably believed to be a qualified institutional buyer that purchases for its own account or for the account of a qualified institutional buyer to whom notice is given that the resale, pledge or transfer is being made in reliance on Rule 144A, or (ii) pursuant to another exemption from registration under the 1933 Act.

The Transferee has been furnished with all information regarding (a) the Certificates and distributions thereon, (b) the nature, performance and servicing of the Mortgage Loans, (c) the Pooling and Servicing Agreement referred to below, and (d) any credit enhancement mechanism associated with the Certificates, that it has requested.

All capitalized terms used but not otherwise defined herein have the respective meanings assigned thereto in the Pooling and Servicing Agreement, dated as of June 1, 2004, among Asset Backed Securities Corporation, as Depositor, DLJ Mortgage Capital, Inc., as Seller, Litton Loan Servicing LP, as Servicer and U.S. Bank National Association, as Trustee, pursuant to which the Certificates were issued.

[TRANSFEREE]

By:

Name:

Title:

ANNEX 1 TO EXHIBIT F-1

QUALIFIED INSTITUTIONAL BUYER STATUS UNDER SEC RULE 144A

[For Transferees Other Than Registered Investment Companies]

The undersigned hereby certifies as follows to [name of Transferor] (the “Transferor”) and U.S. Bank National Association, as Trustee, with respect to the Asset Backed Pass-Through Certificates (the “Certificates”) described in the Transferee Certificate to which this certification relates and to which this certification is an Annex:

As indicated below, the undersigned is the President, Chief Financial Officer, Senior Vice President or other executive officer of the entity purchasing the Certificates (the “Transferee”).

In connection with purchases by the Transferee, the Transferee is a “qualified institutional buyer” as that term is defined in Rule 144A under the Securities Act of 1933 (“Rule 144A”) because (i) the Transferee owned and/or invested on a discretionary basis $______________________ in securities (except for the excluded securities referred to below) as of the end of the Transferee’s most recent fiscal year (such amount being calculated in accordance with Rule 144A) and (ii) the Transferee satisfies the criteria in the category marked below.

___

Corporation, etc. The Transferee is a corporation (other than a bank, savings and loan association or similar institution), Massachusetts or similar business trust, partnership, or any organization described in Section 501(c)(3) of the Internal Revenue Code of 1986.

___

Bank. The Transferee (a) is a national bank or banking institution organized under the laws of any State, territory or the District of Columbia, the business of which is substantially confined to banking and is supervised by the State or territorial banking commission or similar official or is a foreign bank or equivalent institution, and (b) has an audited net worth of at least $25,000,000 as demonstrated in its latest annual financial statements, a copy of which is attached hereto.

___

Savings and Loan. The Transferee (a) is a savings and loan association, building and loan association, cooperative bank, homestead association or similar institution, which is supervised and examined by a State or Federal authority having supervision over any such institutions or is a foreign savings and loan association or equivalent institution and (b) has an audited net worth of at least $25,000,000 as demonstrated in its latest annual financial statements, a copy of which is attached hereto.

___

Broker-dealer. The Transferee is a dealer registered pursuant to Section 15 of the Securities Exchange Act of 1934.

___

Insurance Company. The Transferee is an insurance company whose primary and predominant business activity is the writing of insurance or the reinsuring of risks underwritten by insurance companies and which is subject to supervision by the insurance commissioner or a similar official or agency of a State, territory or the District of Columbia.

___

State or Local Plan. The Transferee is a plan established and maintained by a State, its political subdivisions, or any agency or instrumentality of the State or its political subdivisions, for the benefit of its employees.

___

ERISA Plan. The Transferee is an employee benefit plan within the meaning of Title I of the Employee Retirement Income Security Act of 1974, as amended.

___

Investment Advisor. The Transferee is an investment advisor registered under the Investment Advisers Act of 1940.

The term “securities” as used herein does not include (i) securities of issuers that are affiliated with the Transferee, (ii) securities that are part of an unsold allotment to or subscription by the Transferee, if the Transferee is a dealer, (iii) securities issued or guaranteed by the U.S. or any instrumentality thereof, (iv) bank deposit notes and certificates of deposit, (v) loan participations, (vi) repurchase agreements, (vii) securities owned but subject to a repurchase agreement and (viii) currency, interest rate and commodity swaps.

For purposes of determining the aggregate amount of securities owned and/or invested on a discretionary basis by the Transferee, the Transferee used the cost of such securities to the Transferee and did not include any of the securities referred to in the preceding paragraph. Further, in determining such aggregate amount, the Transferee may have included securities owned by subsidiaries of the Transferee, but only if such subsidiaries are consolidated with the Transferee in its financial statements prepared in accordance with generally accepted accounting principles and if the investments of such subsidiaries are managed under the Transferee’s direction. However, such securities were not included if the Transferee is a majority-owned, consolidated subsidiary of another enterprise and the Transferee is not itself a reporting company under the Securities Exchange Act of 1934.

The Transferee acknowledges that it is familiar with Rule 144A and understands that the Transferor and other parties related to the Certificates are relying and will continue to rely on the statements made herein because one or more sales to the Transferee may be in reliance on Rule 144A.

___

Will the Transferee be purchasing the Certificates

Yes

only for the Transferee’s own account?

If the answer to the foregoing question is “no”, the Transferee agrees that, in connection with any purchase of securities sold to the Transferee for the account of a third party (including any separate account) in reliance on Rule 144A, the Transferee will only purchase for the account of a third party that at the time is a “qualified institutional buyer” within the meaning of Rule 144A. In addition, the Transferee agrees that the Transferee will not purchase securities for a third party unless the Transferee has obtained a current representation letter from such third party or taken other appropriate steps contemplated by Rule 144A to conclude that such third party independently meets the definition of “qualified institutional buyer” set forth in Rule 144A.

The Transferee will notify each of the parties to which this certification is made of any changes in the information and conclusions herein. Until such notice is given, the Transferee’s purchase of the Certificates will constitute a reaffirmation of this certification as of the date of such purchase. In addition, if the Transferee is a bank or savings and loan as provided above, the Transferee agrees that it will furnish to such parties updated annual financial statements promptly after they become available.

Dated:

Print Name of Transferee

By:

Name:

Title:

ANNEX 2 TO EXHIBIT F-1

QUALIFIED INSTITUTIONAL BUYER STATUS UNDER SEC RULE 144A

[For Transferees That Are Registered Investment Companies]

As indicated below, the undersigned is the President, Chief Financial Officer or Senior Vice President of the entity purchasing the Certificates (the “Transferee”) or, if the Transferee is a “qualified institutional buyer” as that term is defined in Rule 144A under the Securities Act of 1933 (“Rule 144A”) because the Transferee is part of a Family of Investment Companies (as defined below), is such an officer of the investment adviser (the “Adviser”).

In connection with purchases by the Transferee, the Transferee is a “qualified institutional buyer” as defined in Rule 144A because (i) the Transferee is an investment company registered under the Investment Company Act of 1940, and (ii) as marked below, the Transferee alone, or the Transferee’s Family of Investment Companies, owned at least $100,000,000 in securities (other than the excluded securities referred to below) as of the end of the Transferee’s most recent fiscal year. For purposes of determining the amount of securities owned by the Transferee or the Transferee’s Family of Investment Companies, the cost of such securities was used.

____

The Transferee owned $___________________ in securities (other than the excluded securities referred to below) as of the end of the Transferee’s most recent fiscal year (such amount being calculated in accordance with Rule 144A).

____

The Transferee is part of a Family of Investment Companies which owned in the aggregate $______________ in securities (other than the excluded securities referred to below) as of the end of the Transferee’s most recent fiscal year (such amount being calculated in accordance with Rule 144A).

The term “Family of Investment Companies” as used herein means two or more registered investment companies (or series thereof) that have the same investment adviser or investment advisers that are affiliated (by virtue of being majority owned subsidiaries of the same parent or because one investment adviser is a majority owned subsidiary of the other).

The term “securities” as used herein does not include (i) securities of issuers that are affiliated with the Transferee or are part of the Transferee’s Family of Investment Companies, (ii) securities issued or guaranteed by the U.S. or any instrumentality thereof, (iii) bank deposit notes and certificates of deposit, (iv) loan participations, (v) repurchase agreements, (vi) securities owned but subject to a repurchase agreement and (vii) currency, interest rate and commodity swaps.

The Transferee is familiar with Rule 144A and understands that the parties to which this certification is being made are relying and will continue to rely on the statements made herein because one or more sales to the Transferee will be in reliance on Rule 144A. In addition, the Transferee will only purchase for the Transferee’s own account.

The undersigned will notify the parties to which this certification is made of any changes in the information and conclusions herein. Until such notice, the Transferee’s purchase of the Certificates will constitute a reaffirmation of this certification by the undersigned as of the date of such purchase.

Dated:

Print Name of Transferee

By:

Name:

Title:

IF AN ADVISER:

Print Name of Transferee

FORM OF TRANSFEREE REPRESENTATION LETTER

The undersigned hereby certifies on behalf of the purchaser named below (the “Purchaser”) as follows:

I am an executive officer of the Purchaser.

The Purchaser is a “qualified institutional buyer”, as defined in Rule 144A, (“Rule 144A”) under the Securities Act of 1933, as amended.

As of the date specified below (which is not earlier than the last day of the Purchaser’s most recent fiscal year), the amount of “securities”, computed for purposes of Rule 144A, owned and invested on a discretionary basis by the Purchaser was in excess of $100,000,000.

Name of Purchaser

By:

(Signature)

Name of Signatory

Title

Date of this certificate

Date of information provided in paragraph 3

EXHIBIT F-2

FORM OF TRANSFER AFFIDAVIT AND AGREEMENT

STATE OF NEW YORK

)

: ss.:

COUNTY OF NEW YORK

)

, being duly sworn, deposes, represents and warrants as follows:

I am a of (the “Owner”) a corporation duly organized and existing under the laws of , the record owner of Asset Backed Securities Corporation, Home Equity Loan Trust 2004-HE4 Asset Backed Pass-Through Certificates, Series 2004-HE4, Class R (the “Class R Certificates”), on behalf of whom I make this affidavit and agreement. Capitalized terms used but not defined herein have the respective meanings assigned thereto in the Pooling and Servicing Agreement pursuant to which the Class R Certificates were issued.

The Owner (i) is and will be a “Permitted Transferee” as of , 20___ and (ii) is acquiring the Class R Certificates for its own account or for the account of another Owner from which it has received an affidavit in substantially the same form as this affidavit. A “Permitted Transferee” is any person other than a “disqualified organization” or a possession of the United States. For this purpose, a “disqualified organization” means the United States, any state or political subdivision thereof, any agency or instrumentality of any of the foregoing (other than an instrumentality all of the activities of which are subject to tax and, except for the Federal Home Loan Mortgage Corporation, a majority of whose board of directors is not selected by any such governmental entity) or any foreign government, international organization or any agency or instrumentality of such foreign government or organization, any rural electric or telephone cooperative, or any organization (other than certain farmers’ cooperatives) that is generally exempt from federal income tax unless such organization is subject to the tax on unrelated business taxable income.

The Owner is aware (i) of the tax that would be imposed on transfers of the Class R Certificates to disqualified organizations under the Internal Revenue Code of 1986 that applies to all transfers of the Class R Certificates after March 31, 1988; (ii) that such tax would be on the transferor or, if such transfer is through an agent (which person includes a broker, nominee or middleman) for a non-Permitted Transferee, on the agent; (iii) that the person otherwise liable for the tax shall be relieved of liability for the tax if the transferee furnishes to such person an affidavit that the transferee is a Permitted Transferee and, at the time of transfer, such person does not have actual knowledge that the affidavit is false; and (iv) that each of the Class R Certificates may be a “noneconomic residual interest” within the meaning of proposed Treasury regulations promulgated under the Code and that the transferor of a “noneconomic residual interest” will remain liable for any taxes due with respect to the income on such residual interest, unless no significant purpose of the transfer is to impede the assessment or collection of tax.

In accordance with Treasury Regulation Section 1.860E-1(c)(4), the Transferee represents and warrants that the transfer does not involve the transfer of the Class R Certificates to a foreign permanent establishment or fixed base of the Transferee and one of the following applies:

(i)

the consideration paid to the Transferee for accepting the Class R Certificates is greater than the present value of the anticipated net federal income taxes and tax benefits (“Tax Liability Present Value”) associated with owning such Certificates, with such present value computed using a discount rate equal to the “applicable federal rate” prescribed by Section 1274 of the Internal Revenue Code as of the date hereof (with all applicable computations done in accordance with Treasury Regulation Section 1.860E-1(c)(8); or

(ii)

the Transferee (A) is an “eligible corporation” as defined in Treasury Regulation 1.860E-1(c)(6), as to which the income of Class R Certificates will only be subject to taxation in the United States, (B) has, and has had in each of its two preceding fiscal years, gross assets for financial reporting purposes (excluding any obligation of a person related to the transferee within the meaning of Treasury Regulation 1.860E-1(c)(6)) in excess of $100 million and net assets of $10 million, and (C) hereby agrees only to transfer the Certificate to another corporation meeting the criteria set forth in this letter.

The Owner is aware of the tax imposed on a “pass-through entity” holding the Class R Certificates if, at any time during the taxable year of the pass-through entity, a non-Permitted Transferee is the record holder of an interest in such entity. (For this purpose, a “pass-through entity” includes a regulated investment company, a real estate investment trust or common trust fund, a partnership, trust or estate, and certain cooperatives.)

The Owner is aware that the Trustee will not register the transfer of any Class R Certificate unless the transferee, or the transferee’s agent, delivers to the Trustee, among other things, an affidavit in substantially the same form as this affidavit. The Owner expressly agrees that it will not consummate any such transfer if it knows or believes that any of the representations contained in such affidavit and agreement are false.

The Owner consents to any additional restrictions or arrangements that shall be deemed necessary upon advice of counsel to constitute a reasonable arrangement to ensure that the Class R Certificates will only be owned, directly or indirectly, by an Owner that is a Permitted Transferee.

The Owner’s taxpayer identification number is .

The Owner has reviewed the restrictions set forth on the face of the Class R Certificates and the provisions of Section 5.02(d) of the Pooling and Servicing Agreement under which the Class R Certificates were issued (in particular, clauses (iii)(A) and (iii)(B) of Section 5.02(d) which authorize the Trustee to deliver payments to a person other than the Owner and negotiate a mandatory sale by the Trustee in the event that the Owner holds such Certificate in violation of Section 5.02(d)); and that the Owner expressly agrees to be bound by and to comply with such restrictions and provisions.

The Owner is not acquiring and will not transfer the Class R Certificates in order to impede the assessment or collection of any tax.

10.

The Owner anticipates that it will, so long as it holds the Class R Certificates, have sufficient assets to pay any taxes owed by the holder of such Class R Certificates, and hereby represents to and for the benefit of the person from whom it acquired the Class R Certificates that the Owner intends to pay taxes associated with holding such Class R Certificates as they become due, fully understanding that it may incur tax liabilities in excess of any cash flows generated by the Class R Certificates.

11.

The Owner has no present knowledge that it may become insolvent or subject to a bankruptcy proceeding for so long as it holds the Class R Certificates.

12.

The Owner has no present knowledge or expectation that it will be unable to pay any United States taxes owed by it so long as any of the Certificates remain outstanding.

13.

The Owner is not acquiring the Class R Certificates with the intent to transfer the Class R Certificates to any person or entity that will not have sufficient assets to pay any taxes owed by the holder of such Class R Certificates, or that may become insolvent or subject to a bankruptcy proceeding, for so long as the Class R Certificates remain outstanding.

14.

The Owner will, in connection with any transfer that it makes of the Class R Certificates, obtain from its transferee the representations required by Section 5.02(d) of the Pooling and Servicing Agreement under which the Class R Certificate were issued and will not consummate any such transfer if it knows, or knows facts that should lead it to believe, that any such representations are false.

15.

The Owner will, in connection with any transfer that it makes of the Class R Certificates, deliver to the Trustee an affidavit, which represents and warrants that it is not transferring the Class R Certificates to impede the assessment or collection of any tax and that it has no actual knowledge that the proposed transferee: (i) has insufficient assets to pay any taxes owed by such transferee as holder of the Class R Certificates; (ii) may become insolvent or subject to a bankruptcy proceeding for so long as the Class R Certificates remains outstanding; and (iii) is not a “Permitted Transferee”.

16.

The Owner is a citizen or resident of the United States, a corporation, partnership or other entity created or organized in, or under the laws of, the United States or any political subdivision thereof, or an estate or trust whose income from sources without the United States may be included in gross income for United States federal income tax purposes regardless of its connection with the conduct of a trade or business within the United States.

17.

The Owner of the Class R Certificate, hereby agrees that in the event that the Trust Fund created by the Pooling and Servicing Agreement is terminated pursuant to Section 9.01 thereof, the undersigned shall assign and transfer to the Holders of the Class X Certificates any amounts in excess of par received in connection with such termination. Accordingly, in the event of such termination, the Trustee is hereby authorized to withhold any such amounts in excess of par and to pay such amounts directly to the Holders of the Class X Certificates. This agreement shall bind and be enforceable against any successor, transferee or assigned of the undersigned in the Class R Certificate. In connection with any transfer of the Class R Certificate, the Owner shall obtain an agreement substantially similar to this clause from any subsequent owner.

18.

The Owner

(a)

is not an employee benefit plan or arrangement subject to the prohibited transaction provisions of the Employee Retirement Income Security Act of 1974, as amended (“ERISA”) or Section 4975 of the Internal Revenue Code of 1986, as amended (the “Code”) (a “Plan”), or any other person purchasing any Certificate with the assets of any such plan or arrangement;

(b)

if the Certificate has been the subject of an ERISA-Qualifying Underwriting, is an insurance company, the source of funds to be used by it to purchase the Certificates is an “insurance company general account” (within the meaning of Department of Labor Prohibited Transaction Class Exemption (“PTCE”) 95-60), and the purchase is being made in reliance upon the availability of the exemptive relief afforded under Sections I and III of PTCE 95-60; or

(c)

provides an Opinion of Counsel which establishes to the reasonable satisfaction of the Trustee that the purchase and holding of an ERISA-Restricted Certificate by, on behalf of or with the assets of such plan or arrangement will not result in non-exempt prohibited transactions under Section 406 of ERISA or Section 4975 of the Code, and will not subject the Depositor, the Trustee or the Servicer to any obligation in addition to those undertaken in this Agreement.

IN WITNESS WHEREOF, the Owner has caused this instrument to be executed on its behalf, pursuant to the authority of its Board of Directors, by its [Vice] President, attested by its [Assistant] Secretary, this ____ day of __________, 20__.

[OWNER]

By:

Name:

Title:

[Vice] President

ATTEST:

By:

Name:

Title:

[Assistant] Secretary

Personally appeared before me the above-named _______________, known or proved to me to be the same person who executed the foregoing instrument and to be a [Vice] President of the Owner, and acknowledged to me that [he/she] executed the same as [his/her] free act and deed and the free act and deed of the Owner.

Subscribed and sworn before me this ____ day of __________, 20__.

Notary Public

County of

State of

My Commission expires:

FORM OF TRANSFEROR AFFIDAVIT

STATE OF NEW YORK

)

: ss. :

COUNTY OF NEW YORK

)

, being duly sworn, deposes, represents and warrants as follows:

I am a of (the “Owner”), a corporation duly organized and existing under the laws of ______________, on behalf of whom I make this affidavit.

The Owner is not transferring the Class R Certificates (the “Residual Certificates”) to impede the assessment or collection of any tax.

The Owner has no actual knowledge that the Person that is the proposed transferee (the “Purchaser”) of the Residual Certificates: (i) has insufficient assets to pay any taxes owed by such proposed transferee as holder of the Residual Certificates; (ii) may become insolvent or subject to a bankruptcy proceeding for so long as the Residual Certificates remain outstanding and (iii) is not a Permitted Transferee.

The Owner understands that the Purchaser has delivered to the Trustee a transfer affidavit and agreement in the form attached to the Pooling and Servicing Agreement as Exhibit F-2. The Owner does not know or believe that any representation contained therein is false.

At the time of transfer, the Owner has conducted a reasonable investigation of the financial condition of the Purchaser as contemplated by Treasury Regulations Section 1.860E-1(c)(4)(i) and, as a result of that investigation, the Owner has determined that the Purchaser has historically paid its debts as they became due and has found no significant evidence to indicate that the Purchaser will not continue to pay its debts as they become due in the future. The Owner understands that the transfer of a Residual Certificate may not be respected for United States income tax purposes (and the Owner may continue to be liable for United States income taxes associated therewith) unless the Owner has conducted such an investigation.

Capitalized terms not otherwise defined herein shall have the meanings ascribed to them in the Pooling and Servicing Agreement.

[OWNER]

By:

Name:

Title:

[Vice] President

ATTEST:

By:

Name:

Title:

[Assistant] Secretary

Personally appeared before me the above-named , known or proved to me to be the same person who executed the foregoing instrument and to be a [Vice] President of the Owner, and acknowledged to me that [he/she] executed the same as [his/her] free act and deed and the free act and deed of the Owner.

Subscribed and sworn before me this ____ day of __________, 20__.

Notary Public

County of

State of

My Commission expires:

EXHIBIT G

FORM OF CERTIFICATION WITH RESPECT TO ERISA AND THE CODE

, 20__.

Asset Backed Securities Corporation

Eleven Madison Avenue

New York, New York 10010

Litton Loan Servicing LP

4828 Loop Central Drive

Irvine, CA 92618

U.S. Bank National Association

60 Livingston Avenue

St. Paul, Minnesota 55105

Attention: Corporate Trust Services – ABSC 2004-HE4

DLJ Mortgage Capital, Inc.

Eleven Madison Avenue

New York, New York 10010

Re:

Asset Backed Securities Corporation

Asset Backed Pass Through Certificates,

Series 2004-HE4, Class [X] [P] [M4] [M5] [M6] [M7] [M8] [M9] [M10]

Dear Sirs:

(the “Transferee”) intends to acquire from (the “Transferor”) $ Initial Certificate Principal Balance of Asset Backed Securities Corporation, Asset Backed Pass-Through Certificates, Series 2004-HE4, Class [X] [P] [M4] [M5] [M6] [M7] [M8] [M9] [M10], (the “Certificates”), issued pursuant to a Pooling and Servicing Agreement (the “Pooling and Servicing Agreement”) dated as of June 1, 2004 among Asset Backed Securities Corporation, as depositor (the “Depositor”), DLJ Mortgage Capital, Inc., as seller (the “Seller”), Litton Loan Servicing LP, as servicer (the “Servicer”) and U.S. Bank National Association, as trustee (the “Trustee”). Capitalized terms used herein and not otherwise defined shall have the meanings assigned thereto in the Pooling and Servicing Agreement. The Transferee hereby certifies, represents and warrants to, and covenants with the Depositor, the Trustee and the Servicer that one of the following statement is accurate:

(a)

We are not an employee benefit plan or arrangement that is subject to the Employee Retirement Income Security Act of 1974, as amended, or Section 4975 of the Internal Revenue Code of 1986, as amended, nor are we using the assets of any such plan or arrangement;

(b)

We are providing an Opinion of Counsel which establishes to the reasonable satisfaction of the Trustee that the purchase and holding of ERISA-Restricted Certificates by, on behalf of or with “plan assets” of such plan or arrangement will not result in non-exempt prohibited transactions under Section 406 of ERISA or Section 4975 of the Code, and will not subject the Depositor, the Trustee or the Servicer to any obligation in addition to those undertaken in this Agreement; or

(c)

If, in the case of ERISA-Restricted Certificates that have been the subject of an ERISA-Qualifying Underwriting, we are an insurance company, we are purchasing such Certificates with funds contained in an “insurance company general account” (as such term is defined in Section V(e) of Prohibited Transaction Class Exemption 95-60 (“PTCE 95-60”)) and our purchase and holding of such Certificates are covered under Sections I and III of PTCE 95-60

Very truly yours,

By:

Name:

Title:

EXHIBIT H

FORM DEPOSITOR CERTIFICATION

Re: Asset Backed Securities Corporation
Home Equity Loan Trust Series 2004-HE4
Asset Backed Pass-Through Certificates, Series 2004-HE4

I, , certify that:

I have reviewed this annual report on Form 10-K, and all reports on Form 8-K containing distribution and servicing reports filed in respect of periods included in the year covered by this annual report, of Asset Backed Securities Corporation Home Equity Loan Trust Series 2004-HE4 (the “Trust”);

Based on my knowledge, the information in these reports, taken as a whole, does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading as of the last day of the period covered by this annual report;

Based on my knowledge, the distribution information required to be prepared by the Trustee based upon the servicing information required to be provided by the Servicer under the Pooling and Servicing Agreement is included in these reports;

Based on my knowledge and upon the annual compliance statements included in the report and required to be delivered to the Trustee in accordance with the terms of the Pooling and Servicing Agreement and based upon the review required under the Pooling and Servicing Agreement, and except as disclosed in the report, the Servicer has fulfilled its obligations under the Pooling and Servicing Agreement; and

The reports disclose all significant deficiencies relating to the Servicer’s compliance with the minimum servicing standards based, in each case, upon the report provided by an independent public accountant, after conducting a review in compliance with the Uniform Single Attestation Program for Mortgage Bankers or similar standard as set forth in the Pooling and Servicing Agreement, that is included in these reports.

In giving the certifications above, I have reasonably relied on the information provided to me by the following unaffiliated parties: the Servicer and the Trustee.

[Name]

[Title]

[Date]

EXHIBIT I

FORM TRUSTEE CERTIFICATION

Re: Asset Backed Securities Corporation
Home Equity Loan Trust Series 2004-HE4
Asset Backed Pass-Through Certificates, Series 2004-HE4

U.S. Bank National Association, as trustee (the “Trustee”) of the Asset Backed Securities Corporation Home Equity Loan Trust Series 2004-HE4 (the “Trust”), hereby certifies to Asset Backed Securities Corporation (the “Depositor”), DLJ Mortgage Capital, Inc. (the “Seller) and each Person, if any, who “controls” the Depositor and the Seller within the meaning of the Securities Act of 1933, as amended, and their officers, directors and affiliates, and with the knowledge and intent that they will rely upon this certification, that:

The Trustee has reviewed the annual report on Form 10-K for the fiscal year [____], and all reports on Form 8-K containing distribution reports filed in respect of periods included in the year covered by that annual report, of the Depositor relating to the Trust;

Based on the Trustee’s knowledge, and assuming the accuracy and completeness of the information supplied to the Trustee by the Servicer, the distribution information in the distribution reports contained in all reports on Form 8-K included in the year covered by the annual report on Form 10-K for the fiscal year [____], prepared by the Trustee, taken as a whole, does not contain any untrue statement of a material fact or omit to state a material fact required by the Pooling and Servicing Agreement to be included therein and necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading as of the last day of the period covered by that annual report; and

Based on the Trustee’s knowledge, the distribution information required to be provided by the Trustee under the Pooling and Servicing Agreement is included in these reports.

U.S. BANK NATIONAL ASSOCIATION,

as Trustee

By:

[Name]

[Title]

[Date]

EXHIBIT J

FORM SERVICER CERTIFICATION

Re: Asset Backed Securities Corporation
Home Equity Loan Trust Series 2004-HE4
Asset Backed Pass-Through Certificates, Series 2004-HE4

I, [name of certifying individual], a duly elected and acting officer of Litton Loan Servicing LP (the “Servicer”), certify pursuant to Section 4.06(d) of the Pooling and Servicing Agreement to the Depositor, the Seller, the Trustee and each Person, if any, who “controls” the Depositor or the Trustee within the meaning of the Securities Act of 1933, as amended, and their respective officers and directors, with respect to the calendar year immediately preceding the date of this Certificate (the “Relevant Year”), as follows:

For purposes of this Certificate, “Relevant Information” means the information in the certificate provided pursuant to Section 3.20 of the Pooling and Servicing Agreement (the “Annual Compliance Certificate”) for the Relevant Year and the information in all servicing reports required pursuant to the Pooling and Servicing Agreement to be provided by the Servicer to the Trustee during the Relevant Year. Based on my knowledge, the Relevant Information, taken as a whole, does not contain any untrue statement of a material fact or omit to state a material fact required to be stated therein which is necessary to make the statements made therein, in light of the circumstances under which such statements were made, not misleading as of the last day of the Relevant Year.

The Relevant Information has been provided to those Persons entitled to receive it.

I am responsible for reviewing the activities performed by the Servicer under the Pooling and Servicing Agreement during the Relevant Year. Based upon the review required by the Pooling and Servicing Agreement and except as disclosed in the Annual Compliance Certificate or the accountants’ statement provided pursuant to Section 3.21 of the Pooling and Servicing Agreement, to the best of my knowledge, the Servicer has fulfilled its obligations under the Pooling and Servicing Agreement throughout the Relevant Year.

Capitalized terms used but not defined herein have the meanings ascribed to them in the Pooling and Servicing Agreement, dated June 1, 2004 (the “Pooling and Servicing Agreement”), among Asset Backed Securities Corporation, as depositor (the “Depositor”), DLJ Mortgage Capital, Inc., as seller (the “Seller”), the Servicer and U.S. Bank National Association, as trustee (the “Trustee”).

LITTON LOAN SERVICING LP,

as Servicer

By:

[Name]

[Title]

[Date]

EXHIBIT K

RESERVED

Schedule 1

MORTGAGE LOAN SCHEDULE

FILED BY PAPER

[ON FILE WITH THE TRUSTEE]

Schedule 2

PREPAYMENT CHARGE SCHEDULE

[TO BE PROVIDED UPON REQUEST]

Asset Backed Pass-Through Certificates, Series 2004-HE4 8-K