WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMU.01AR2
Distribution Date: 08/25/2003

Class	Cusip	Orig Prin Bal	Begin Prin Bal	Int Rate Accrued	Int Rate Paid	Int Dist	Prin Dist	Int Shortfall	Prin Loss	Deferred Interest	Int Reimbursed	Unscheduled Int	Prin Reimbursed	Total Dist	Ending Class Bal
A1	929227CW4	$284,000,000.00	$0.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
A2	929227CX2	$101,000,000.00	$0.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
A3	929227CY0	$116,634,000.00	$0.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
A4	929227CZ7	$213,000,000.00	$93,422,184.48	5.0590000000%	5.0590000000%	$393,852.36	$16,437,911.24	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$16,831,763.60	$76,984,273.24
B1	929227DA1	$9,602,000.00	$5,437,236.11	5.9629530855%	5.9629530855%	$27,018.32	$445,907.03	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$472,925.35	$4,991,329.08
B2	929227DB9	$6,278,000.00	$3,554,985.24	5.9629530855%	5.9629530855%	$17,665.18	$291,543.88	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$309,209.06	$3,263,441.36
B3	929227DC7	$2,954,000.00	$1,672,734.38	5.9629530855%	5.9629530855%	$8,312.03	$137,180.73	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$145,492.76	$1,535,553.65
B4	XXXXXXXXX	$1,846,000.00	$1,045,317.43	5.9629530855%	5.9629530855%	$5,194.32	$85,726.35	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$90,920.66	$959,591.08
B5	XXXXXXXXX	$1,846,000.00	$1,045,317.43	5.9629530855%	5.9629530855%	$5,194.32	$85,726.35	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$90,920.66	$959,591.08
B6	XXXXXXXXX	$1,480,315.00	$838,244.52	5.9629530855%	5.9629530855%	$4,165.34	$68,744.38	$0.00	$0.00	$0.00	$0.00	$0.00	$0.05	$72,909.73	$769,500.19
R	929227DD5	$100.00	$0.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
R_SYN	XXXXXXXXX	$0.00	$0.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
SFEE	XXXXXXXXX	$714,634,000.00	$93,422,184.48	0.9039530855%	0.9039530855%	$70,374.39	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$70,374.39	$76,984,273.24
Total		$738,640,415.00	$107,016,019.59			$531,776.25	$17,552,739.96	$0.00	$0.00	$0.00	$0.00	$0.00	$0.05	$18,084,516.21	$89,463,279.68

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMU.01AR2
Distribution Date: 08/25/2003

Class	Orig Face	Beg Bal	Prin Loss	Deferred Interest	Total Prin	End Cert Pct	End Cert Bal
A1	$284,000,000.00	$0.00	$0.00	$0.00	$0.00	0.0000000000	$0.00
A2	$101,000,000.00	$0.00	$0.00	$0.00	$0.00	0.0000000000	$0.00
A3	$116,634,000.00	$0.00	$0.00	$0.00	$0.00	0.0000000000	$0.00
A4	$213,000,000.00	$93,422,184.48	$0.00	$0.00	$16,437,911.24	0.3614285129	$76,984,273.24
B1	$9,602,000.00	$5,437,236.11	$0.00	$0.00	$445,907.03	0.5198218163	$4,991,329.08
B2	$6,278,000.00	$3,554,985.24	$0.00	$0.00	$291,543.88	0.5198218159	$3,263,441.36
B3	$2,954,000.00	$1,672,734.38	$0.00	$0.00	$137,180.73	0.5198218179	$1,535,553.65
B4	$1,846,000.00	$1,045,317.43	$0.00	$0.00	$85,726.35	0.5198218202	$959,591.08
B5	$1,846,000.00	$1,045,317.43	$0.00	$0.00	$85,726.35	0.5198218202	$959,591.08
B6	$1,480,315.00	$838,244.52	$0.00	$0.00	$68,744.38	0.5198219230	$769,500.19
R	$100.00	$0.00	$0.00	$0.00	$0.00	0.0000000000	$0.00
R_SYN	$0.00	$0.00	$0.00	$0.00	$0.00	0.0000000000	$0.00
SFEE	$714,634,000.00	$93,422,184.48	$0.00	$0.00	$0.00	0.1077254556	$76,984,273.24
Total	$738,640,415.00	$107,016,019.59	$0.00	$0.00	$17,552,739.96	0.1211188528	$89,463,279.68

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMU.01AR2
Distribution Date: 08/25/2003
PER $1000 DENOMINATION
Class	Orig Face	Beg Bal	Prin Loss	Deferred Interest	Total Prin	End Cert Pct	End Cert Bal
A1	$284,000,000.00	0.00000000	0.00000000	0.00000000	0.00000000	0.0000000000	0.00000000
A2	$101,000,000.00	0.00000000	0.00000000	0.00000000	0.00000000	0.0000000000	0.00000000
A3	$116,634,000.00	0.00000000	0.00000000	0.00000000	0.00000000	0.0000000000	0.00000000
A4	$213,000,000.00	438.60180507	0.00000000	0.00000000	77.17329221	0.3614285129	361.42851286
B1	$9,602,000.00	566.26079046	0.00000000	0.00000000	46.43897417	0.5198218163	519.82181629
B2	$6,278,000.00	566.26079006	0.00000000	0.00000000	46.43897420	0.5198218159	519.82181586
B3	$2,954,000.00	566.26079215	0.00000000	0.00000000	46.43897427	0.5198218179	519.82181787
B4	$1,846,000.00	566.26079632	0.00000000	0.00000000	46.43897616	0.5198218202	519.82182015
B5	$1,846,000.00	566.26079632	0.00000000	0.00000000	46.43897616	0.5198218202	519.82182015
B6	$1,480,315.00	566.26091068	0.00000000	0.00000000	46.43902142	0.5198219230	519.82192304
R	$100.00	0.00000000	0.00000000	0.00000000	0.00000000	0.0000000000	0.00000000
R_SYN	$0.00	0.00000000	0.00000000	0.00000000	0.00000000	0.0000000000	0.00000000
SFEE	$714,634,000.00	130.72731563	0.00000000	0.00000000	0.00000000	0.1077254556	107.72545560

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMU.01AR2
Distribution Date: 08/25/2003

Class	Orig Face	Int Rate Accrued	Int Rate Paid	Beg Cert Prin/Not Bal	Curent Int Accrued	Int Shortfall	Unscheduled Int	Int Reimbursed	Total Int Dist
A1	$284,000,000.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
A2	$101,000,000.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
A3	$116,634,000.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
A4	$213,000,000.00	5.0590000000%	5.0590000000%	$93,422,184.48	$393,852.36	$0.00	$0.00	$0.00	$393,852.36
B1	$9,602,000.00	5.9629530855%	5.9629530855%	$5,437,236.11	$27,018.32	$0.00	$0.00	$0.00	$27,018.32
B2	$6,278,000.00	5.9629530855%	5.9629530855%	$3,554,985.24	$17,665.18	$0.00	$0.00	$0.00	$17,665.18
B3	$2,954,000.00	5.9629530855%	5.9629530855%	$1,672,734.38	$8,312.03	$0.00	$0.00	$0.00	$8,312.03
B4	$1,846,000.00	5.9629530855%	5.9629530855%	$1,045,317.43	$5,194.32	$0.00	$0.00	$0.00	$5,194.32
B5	$1,846,000.00	5.9629530855%	5.9629530855%	$1,045,317.43	$5,194.32	$0.00	$0.00	$0.00	$5,194.32
B6	$1,480,315.00	5.9629530855%	5.9629530855%	$838,244.52	$4,165.34	$0.00	$0.00	$0.00	$4,165.34
R	$100.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
R_SYN	$0.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
SFEE	$714,634,000.00	0.9039530855%	0.9039530855%	$93,422,184.48	$70,374.39	$0.00	$0.00	$0.00	$70,374.39
Total	$738,640,415.00			$107,016,019.59	$531,776.25	$0.00	$0.00	$0.00	$531,776.25

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMU.01AR2
Distribution Date: 08/25/2003
PER $1000 DENOMINATION
Class	Orig Face	Int Rate Accrued	Int Rate Paid	Beg Cert Prin/Not Bal	Curent Int Accrued	Int Shortfall	Unscheduled Int	Int Reimbursed	Total Int Dist
A1	$284,000,000.00	0.0000000000%	0.0000000000%	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000
A2	$101,000,000.00	0.0000000000%	0.0000000000%	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000
A3	$116,634,000.00	0.0000000000%	0.0000000000%	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000
A4	$213,000,000.00	5.0590000000%	5.0590000000%	438.60180507	1.84907211	0.00000000	0.00000000	0.00000000	1.84907211
B1	$9,602,000.00	5.9629530855%	5.9629530855%	566.26079046	2.81382212	0.00000000	0.00000000	0.00000000	2.81382212
B2	$6,278,000.00	5.9629530855%	5.9629530855%	566.26079006	2.81382287	0.00000000	0.00000000	0.00000000	2.81382287
B3	$2,954,000.00	5.9629530855%	5.9629530855%	566.26079215	2.81382194	0.00000000	0.00000000	0.00000000	2.81382194
B4	$1,846,000.00	5.9629530855%	5.9629530855%	566.26079632	2.81382449	0.00000000	0.00000000	0.00000000	2.81382449
B5	$1,846,000.00	5.9629530855%	5.9629530855%	566.26079632	2.81382449	0.00000000	0.00000000	0.00000000	2.81382449
B6	$1,480,315.00	5.9629530855%	5.9629530855%	566.26091068	2.81382003	0.00000000	0.00000000	0.00000000	2.81382003
R	$100.00	0.0000000000%	0.0000000000%	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000
R_SYN	$0.00	0.0000000000%	0.0000000000%	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000
SFEE	$714,634,000.00	0.9039530855%	0.9039530855%	130.72731563	0.09847613	0.00000000	0.00000000	0.00000000	0.09847613

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
08/2003 DISTRIBUTION REPORT
SERIES: WAMU 01AR2 WEIGHTED AVERAGE PC RATE: 5.96295%
POOL NUMBER: 1775
ISSUE DATE: 10/12/2001
CERTIFICATE BALANCE AT ISSUE: $738,640,415.00
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END:	254		$107,016,019.58
PRINCIPAL POOL COLLECTION(S):
Scheduled Principal Collection Due Current Month		$66,010.89
Unscheduled Principal Collection/Reversals		$186,877.32
Liquidations-in-full	38	$17,299,851.69
Net principal Distributed		$17,552,739.90	-$17,552,739.90

CAPITAL LOSS (PRINCIPAL WRITTEN OFF):			$0.00

BALANCE CURRENT FISCAL MONTH-END:	216		$89,463,279.68

SCHEDULED INTEREST AT MORTGAGE RATE:		$603,120.27

UNSCHEDULED INTEREST AT MORTGAGE RATE:
Unscheduled Interest Collection/Reversals		$0.00
Interest Uncollected on Liquidation		$0.00
Interest Uncollected on Non-Earning Assets		$0.00
Net Unscheduled Interest Distributed		$0.00

OTHER:
Loan Conversion Fees		$0.00
Expense Reimbursements		$0.00
Gain on Liquidations		$0.00
Hazard Insurance Premium Refunds		$0.00
Net Other Distributions		$0.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
08/2003 DISTRIBUTION REPORT
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:		$71,343.96

UNSCHEDULED SERVICING FEES:
Unscheduled Service Fee Collections/Reversals		$0.00
Servicing Fees Uncollected on Liquidation		$0.00
Servicing Fees Uncollected/Non-Earning Assets		$0.00
Net Unscheduled Service Fees Distributed		$0.00

MISCELLANEOUS EXPENSES:		$0.00

NET FUNDS DISTRIBUTED:		$18,084,516.21

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
08/2003 DISTRIBUTION REPORT
SERIES: WAMU 01AR2 WEIGHTED AVERAGE PC RATE: 5.96295%
POOL NUMBER: ALL
ISSUE DATE: 10/12/2001
CERTIFICATE BALANCE AT ISSUE: $738,640,415.00
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END:	254		$107,016,019.58
PRINCIPAL POOL COLLECTION(S):
Scheduled Principal Collection Due Current Month		$66,010.89
Unscheduled Principal Collection/Reversals		$186,877.32
Liquidations-in-full	38	$17,299,851.69
Net principal Distributed		$17,552,739.90	-$17,552,739.90

CAPITAL LOSS (PRINCIPAL WRITTEN OFF):			$0.00

BALANCE CURRENT FISCAL MONTH-END:	216		$89,463,279.68

SCHEDULED INTEREST AT MORTGAGE RATE:		$603,120.27

UNSCHEDULED INTEREST AT MORTGAGE RATE:
Unscheduled Interest Collection/Reversals		$0.00
Interest Uncollected on Liquidation		$0.00
Interest Uncollected on Non-Earning Assets		$0.00
Net Unscheduled Interest Distributed		$0.00

OTHER:
Loan Conversion Fees		$0.00
Expense Reimbursements		$0.00
Gain on Liquidations		$0.00
Hazard Insurance Premium Refunds		$0.00
Net Other Distributions		$0.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
08/2003 DISTRIBUTION REPORT
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:		$71,343.96

UNSCHEDULED SERVICING FEES:
Unscheduled Service Fee Collections/Reversals		$0.00
Servicing Fees Uncollected on Liquidation		$0.00
Servicing Fees Uncollected/Non-Earning Assets		$0.00
Net Unscheduled Service Fees Distributed		$0.00

MISCELLANEOUS EXPENSES:		$0.00

NET FUNDS DISTRIBUTED:		$18,084,516.21

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMU.01AR2
Distribution Date: 08/25/2003

Distribution by Group
Pool ID		Principal		Interest		Total
Pool - 1775		$17,552,739.90		$531,776.31		$18,084,516.21
Aggregate		$17,552,739.90		$531,776.31		$18,084,516.21

Number of Loans and Aggregate Principal Balance By Group
Pool ID	Beg Bal	Beg Count	Paid Off / Liq Count	Rem Count	Sched Prin End Bal	Sched Prin	Prin PrePay / Liq	Unsched Prin / Rev	Total Prin
Pool - 1775	$107,016,019.58	254	38	216	$89,463,279.68	$66,010.89	$17,299,851.69	$186,877.32	$17,552,739.90
Aggregate	$107,016,019.58	254	38	216	$89,463,279.68	$66,010.89	$17,299,851.69	$186,877.32	$17,552,739.90

Delinquency Information by Group
Pool ID	1 Month Count	Sched End Balance	2 Months Count	Sched End Balance	3 Months Count	Sched End Balance	4 Months Count	Sched End Balance
Pool - 1775	3	$821,986.73	0	$0.00	0	$0.00	0	$0.00
Aggregate	3	$821,986.73	0	$0.00	0	$0.00	0	$0.00

Foreclosure and REO Information by Group
Pool ID		Foreclosure Count		Sched End Balance		REO Count		Sched End Balance
Pool - 1775		0		$0.00		0		$0.00
Aggregate		0		$0.00		0		$0.00

Aggregate Loss Amounts by Group
Pool ID			Count			Loss Amount
Group 1(1775)			0			$0.00
Aggregate			0			$0.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMU.01AR2
Distribution Date: 08/25/2003

INSURANCE RESERVES - Group 1(1775)
Insurance Type	Original Balance	Claims In Progress	Claims Paid	Coverage Adjustments	Coverage Remaining
MPI	$0.00	$0.00	$0.00	$0.00	$0.00
Special Hazard	$0.00	$0.00	$0.00	$0.00	$0.00
Bankruptcy Bond
Single-Units	$0.00	$0.00	$0.00	$0.00	$0.00
Multi-Units	$0.00	$0.00	$0.00	$0.00	$0.00
Mortgage Repurchase	$0.00	$0.00	$0.00	$0.00	$0.00

INSURANCE RESERVES - Aggregate
Insurance Type	Original Balance	Claims In Progress	Claims Paid	Coverage Adjustments	Coverage Remaining
MPI	$0.00	$0.00	$0.00	$0.00	$0.00
Special Hazard	$0.00	$0.00	$0.00	$0.00	$0.00
Bankruptcy Bond
Single-Units	$0.00	$0.00	$0.00	$0.00	$0.00
Multi-Units	$0.00	$0.00	$0.00	$0.00	$0.00
Mortgage Repurchase	$0.00	$0.00	$0.00	$0.00	$0.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMU.01AR2
Distribution Date: 08/25/2003

The Class Principal Balances of each Class of the Class B1,B2,B3,B4,B5,B6 Certificatesimmediately after the principal and interest distribution on 200308 are as follows:

Class			Class Principal Balance
B1			$4,991,329.08
B2			$3,263,441.36
B3			$1,535,553.65
B4			$959,591.08
B5			$959,591.08
B6			$769,500.19
Total			$12,479,006.44
Capitalized items used but not defined herein have the meanings ascribed to them in the Prospectus Supplement.

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMU.01AR2
Distribution Date: 08/25/2003

Aggregate ARM Information by Group
Pool ID	Netwac	Margin
Pool - 1775	5.96295%	2.75438%
Aggregate	5.96295%	2.75367%

WAMU MORTGAGE PASS THROUGH CERTIFICATES SERIES 2001-AR2 8-K