WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMU.02AR19
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	929227ZM1	$215,000,000.00	$22,640,623.74	1.7710000000%	1.7710000000%	$33,413.79	$22,640,623.74	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$22,674,037.53	$0.00
A2	929227ZN9	$355,000,000.00	$226,760,415.83	2.4860000000%	2.4860000000%	$469,771.99	$138,771,279.81	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$139,241,051.81	$87,989,136.02
A3	929227ZP4	$146,000,000.00	$146,000,000.00	3.4920000000%	3.4920000000%	$424,860.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$424,860.00	$146,000,000.00
A4	929227ZQ2	$264,000,000.00	$264,000,000.00	3.9500000000%	3.9500000000%	$869,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$869,000.00	$264,000,000.00
A5	929227ZR0	$114,600,000.00	$114,600,000.00	4.3190000000%	4.3190000000%	$412,464.50	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$412,464.50	$114,600,000.00
A6	929227ZS8	$349,258,000.00	$349,258,000.00	4.1580000000%	4.1580000000%	$1,210,178.97	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$1,210,178.97	$349,258,000.00
A7	929227ZT6	$395,000,000.00	$307,292,905.97	4.6790000000%	4.6790000000%	$1,198,186.26	$44,157,875.57	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$45,356,061.83	$263,135,030.40
A8	929227ZU3	$105,000,000.00	$81,685,456.00	4.5560000000%	4.5560000000%	$310,132.45	$11,738,169.46	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$12,048,301.90	$69,947,286.54
B1	929227ZX7	$20,998,000.00	$20,958,001.88	4.8580265076%	4.8580265076%	$84,845.44	$5,765.36	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$90,610.80	$20,952,236.52
B2	929227ZY5	$15,998,000.00	$15,967,526.14	4.8580265076%	4.8580265076%	$64,642.22	$4,392.52	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$69,034.75	$15,963,133.62
B3	929227ZZ2	$7,999,000.00	$7,983,763.08	4.8580265076%	4.8580265076%	$32,321.11	$2,196.26	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$34,517.37	$7,981,566.82
B4	929227A63	$2,999,000.00	$2,993,287.35	4.8580265076%	4.8580265076%	$12,117.89	$823.43	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$12,941.32	$2,992,463.92
B5	929227A71	$2,999,000.00	$2,993,287.35	4.8580265076%	4.8580265076%	$12,117.89	$823.43	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$12,941.32	$2,992,463.92
B6	929227A89	$5,002,939.48	$4,993,409.57	4.8580265076%	4.8580265076%	$20,215.10	$1,373.65	$0.00	$0.00	$0.00	$0.00	$0.00	$0.01	$21,588.75	$4,992,035.93
R	929227A22	$100.00	$0.00	0.0000000000%	0.0000000000%	$0.91	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.91	$0.00
SFEE	XXXXXXXXX	$1,943,858,000.00	$1,512,237,401.54	0.9475230767%	0.9475230767%	$1,194,066.53	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$1,194,066.53	$1,294,929,452.96
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
Total		$1,999,854,039.48	$1,568,126,676.91			$6,348,335.05	$217,323,323.23	$0.00	$0.00	$0.00	$0.00	$0.00	$0.01	$223,671,658.28	$1,350,803,353.69

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMU.02AR19
Distribution Date: 08/25/2003

Class	Orig Face	Beg Bal	Prin Loss	Deferred Interest	Total Prin	End Cert Pct	End Cert Bal
A1	$215,000,000.00	$22,640,623.74	$0.00	$0.00	$22,640,623.74	0.0000000000	$0.00
A2	$355,000,000.00	$226,760,415.83	$0.00	$0.00	$138,771,279.81	0.2478567212	$87,989,136.02
A3	$146,000,000.00	$146,000,000.00	$0.00	$0.00	$0.00	1.0000000000	$146,000,000.00
A4	$264,000,000.00	$264,000,000.00	$0.00	$0.00	$0.00	1.0000000000	$264,000,000.00
A5	$114,600,000.00	$114,600,000.00	$0.00	$0.00	$0.00	1.0000000000	$114,600,000.00
A6	$349,258,000.00	$349,258,000.00	$0.00	$0.00	$0.00	1.0000000000	$349,258,000.00
A7	$395,000,000.00	$307,292,905.97	$0.00	$0.00	$44,157,875.57	0.6661646339	$263,135,030.40
A8	$105,000,000.00	$81,685,456.00	$0.00	$0.00	$11,738,169.46	0.6661646337	$69,947,286.54
B1	$20,998,000.00	$20,958,001.88	$0.00	$0.00	$5,765.36	0.9978205791	$20,952,236.52
B2	$15,998,000.00	$15,967,526.14	$0.00	$0.00	$4,392.52	0.9978205788	$15,963,133.62
B3	$7,999,000.00	$7,983,763.08	$0.00	$0.00	$2,196.26	0.9978205801	$7,981,566.82
B4	$2,999,000.00	$2,993,287.35	$0.00	$0.00	$823.43	0.9978205802	$2,992,463.92
B5	$2,999,000.00	$2,993,287.35	$0.00	$0.00	$823.43	0.9978205802	$2,992,463.92
B6	$5,002,939.48	$4,993,409.57	$0.00	$0.00	$1,373.65	0.9978205713	$4,992,035.93
R	$100.00	$0.00	$0.00	$0.00	$0.00	0.0000000000	$0.00
SFEE	$1,943,858,000.00	$1,512,237,401.54	$0.00	$0.00	$0.00	0.6661646339	$1,294,929,452.96
R_SYN	$0.00	$0.00	$0.00	$0.00	$0.00	0.0000000000	$0.00
Total	$1,999,854,039.48	$1,568,126,676.91	$0.00	$0.00	$217,323,323.23	0.6754509714	$1,350,803,353.69

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMU.02AR19
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	$215,000,000.00	105.30522670	0.00000000	0.00000000	105.30522670	0.0000000000	0.00000000
A2	$355,000,000.00	638.76173473	0.00000000	0.00000000	390.90501355	0.2478567212	247.85672118
A3	$146,000,000.00	1,000.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
A4	$264,000,000.00	1,000.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
A5	$114,600,000.00	1,000.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
A6	$349,258,000.00	1,000.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
A7	$395,000,000.00	777.95672397	0.00000000	0.00000000	111.79209005	0.6661646339	666.16463392
A8	$105,000,000.00	777.95672381	0.00000000	0.00000000	111.79209010	0.6661646337	666.16463371
B1	$20,998,000.00	998.09514620	0.00000000	0.00000000	0.27456710	0.9978205791	997.82057910
B2	$15,998,000.00	998.09514564	0.00000000	0.00000000	0.27456682	0.9978205788	997.82057882
B3	$7,999,000.00	998.09514689	0.00000000	0.00000000	0.27456682	0.9978205801	997.82058007
B4	$2,999,000.00	998.09514838	0.00000000	0.00000000	0.27456819	0.9978205802	997.82058019
B5	$2,999,000.00	998.09514838	0.00000000	0.00000000	0.27456819	0.9978205802	997.82058019
B6	$5,002,939.48	998.09513786	0.00000000	0.00000000	0.27456858	0.9978205713	997.82057128
R	$100.00	0.00000000	0.00000000	0.00000000	0.00000000	0.0000000000	0.00000000
SFEE	$1,943,858,000.00	777.95672397	0.00000000	0.00000000	0.00000000	0.6661646339	666.16463392
R_SYN	$0.00	0.00000000	0.00000000	0.00000000	0.00000000	0.0000000000	0.00000000

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMU.02AR19
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	$215,000,000.00	1.7710000000%	1.7710000000%	$22,640,623.74	$33,413.79	$0.00	$0.00	$0.00	$33,413.79
A2	$355,000,000.00	2.4860000000%	2.4860000000%	$226,760,415.83	$469,771.99	$0.00	$0.00	$0.00	$469,771.99
A3	$146,000,000.00	3.4920000000%	3.4920000000%	$146,000,000.00	$424,860.00	$0.00	$0.00	$0.00	$424,860.00
A4	$264,000,000.00	3.9500000000%	3.9500000000%	$264,000,000.00	$869,000.00	$0.00	$0.00	$0.00	$869,000.00
A5	$114,600,000.00	4.3190000000%	4.3190000000%	$114,600,000.00	$412,464.50	$0.00	$0.00	$0.00	$412,464.50
A6	$349,258,000.00	4.1580000000%	4.1580000000%	$349,258,000.00	$1,210,178.97	$0.00	$0.00	$0.00	$1,210,178.97
A7	$395,000,000.00	4.6790000000%	4.6790000000%	$307,292,905.97	$1,198,186.26	$0.00	$0.00	$0.00	$1,198,186.26
A8	$105,000,000.00	4.5560000000%	4.5560000000%	$81,685,456.00	$310,132.45	$0.00	$0.00	$0.00	$310,132.45
B1	$20,998,000.00	4.8580265076%	4.8580265076%	$20,958,001.88	$84,845.44	$0.00	$0.00	$0.00	$84,845.44
B2	$15,998,000.00	4.8580265076%	4.8580265076%	$15,967,526.14	$64,642.22	$0.00	$0.00	$0.00	$64,642.22
B3	$7,999,000.00	4.8580265076%	4.8580265076%	$7,983,763.08	$32,321.11	$0.00	$0.00	$0.00	$32,321.11
B4	$2,999,000.00	4.8580265076%	4.8580265076%	$2,993,287.35	$12,117.89	$0.00	$0.00	$0.00	$12,117.89
B5	$2,999,000.00	4.8580265076%	4.8580265076%	$2,993,287.35	$12,117.89	$0.00	$0.00	$0.00	$12,117.89
B6	$5,002,939.48	4.8580265076%	4.8580265076%	$4,993,409.57	$20,215.10	$0.00	$0.00	$0.00	$20,215.10
R	$100.00	0.0000000000%	0.0000000000%	$0.00	$0.91	$0.00	$0.00	$0.00	$0.91
SFEE	$1,943,858,000.00	0.9475230767%	0.9475230767%	$1,512,237,401.54	$1,194,066.53	$0.00	$0.00	$0.00	$1,194,066.53
R_SYN	$0.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
Total	$1,999,854,039.48			$1,568,126,676.91	$6,348,335.05	$0.00	$0.00	$0.00	$6,348,335.05

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMU.02AR19
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	$215,000,000.00	1.7710000000%	1.7710000000%	105.30522670	0.15541298	0.00000000	0.00000000	0.00000000	0.15541298
A2	$355,000,000.00	2.4860000000%	2.4860000000%	638.76173473	1.32330138	0.00000000	0.00000000	0.00000000	1.32330138
A3	$146,000,000.00	3.4920000000%	3.4920000000%	1,000.00000000	2.91000000	0.00000000	0.00000000	0.00000000	2.91000000
A4	$264,000,000.00	3.9500000000%	3.9500000000%	1,000.00000000	3.29166667	0.00000000	0.00000000	0.00000000	3.29166667
A5	$114,600,000.00	4.3190000000%	4.3190000000%	1,000.00000000	3.59916667	0.00000000	0.00000000	0.00000000	3.59916667
A6	$349,258,000.00	4.1580000000%	4.1580000000%	1,000.00000000	3.46500000	0.00000000	0.00000000	0.00000000	3.46500000
A7	$395,000,000.00	4.6790000000%	4.6790000000%	777.95672397	3.03338294	0.00000000	0.00000000	0.00000000	3.03338294
A8	$105,000,000.00	4.5560000000%	4.5560000000%	777.95672381	2.95364238	0.00000000	0.00000000	0.00000000	2.95364238
B1	$20,998,000.00	4.8580265076%	4.8580265076%	998.09514620	4.04064387	0.00000000	0.00000000	0.00000000	4.04064387
B2	$15,998,000.00	4.8580265076%	4.8580265076%	998.09514564	4.04064383	0.00000000	0.00000000	0.00000000	4.04064383
B3	$7,999,000.00	4.8580265076%	4.8580265076%	998.09514689	4.04064383	0.00000000	0.00000000	0.00000000	4.04064383
B4	$2,999,000.00	4.8580265076%	4.8580265076%	998.09514838	4.04064355	0.00000000	0.00000000	0.00000000	4.04064355
B5	$2,999,000.00	4.8580265076%	4.8580265076%	998.09514838	4.04064355	0.00000000	0.00000000	0.00000000	4.04064355
B6	$5,002,939.48	4.8580265076%	4.8580265076%	998.09513786	4.04064452	0.00000000	0.00000000	0.00000000	4.04064452
R	$100.00	0.0000000000%	0.0000000000%	0.00000000	9.10000000	0.00000000	0.00000000	0.00000000	9.10000000
SFEE	$1,943,858,000.00	0.9475230767%	0.9475230767%	777.95672397	0.61427662	0.00000000	0.00000000	0.00000000	0.61427662
R_SYN	$0.00	0.0000000000%	0.0000000000%	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
08/2003 DISTRIBUTION REPORT
SERIES: WAMU 02AR19 WEIGHTED AVERAGE PC RATE: 4.85803%
POOL NUMBER: 2011
ISSUE DATE: 12/23/2002
CERTIFICATE BALANCE AT ISSUE: $1,999,854,039.48
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END:	2587		$1,568,126,676.92
PRINCIPAL POOL COLLECTION(S):
Scheduled Principal Collection Due Current Month		$431,377.72
Unscheduled Principal Collection/Reversals		$1,575,069.10
Liquidations-in-full	346	$215,316,876.40
Net principal Distributed		$217,323,323.22	-$217,323,323.22

CAPITAL LOSS (PRINCIPAL WRITTEN OFF):			$0.00

BALANCE CURRENT FISCAL MONTH-END:	2241		$1,350,803,353.70

SCHEDULED INTEREST AT MORTGAGE RATE:		$6,903,712.88

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:		$555,377.82

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:		$223,671,658.28

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
08/2003 DISTRIBUTION REPORT
SERIES: WAMU 02AR19 WEIGHTED AVERAGE PC RATE: 4.85803%
POOL NUMBER: ALL
ISSUE DATE: 12/23/2002
CERTIFICATE BALANCE AT ISSUE: $1,999,854,039.48
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END:	2587		$1,568,126,676.92
PRINCIPAL POOL COLLECTION(S):
Scheduled Principal Collection Due Current Month		$431,377.72
Unscheduled Principal Collection/Reversals		$1,575,069.10
Liquidations-in-full	346	$215,316,876.40
Net principal Distributed		$217,323,323.22	-$217,323,323.22

CAPITAL LOSS (PRINCIPAL WRITTEN OFF):			$0.00

BALANCE CURRENT FISCAL MONTH-END:	2241		$1,350,803,353.70

SCHEDULED INTEREST AT MORTGAGE RATE:		$6,903,712.88

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:		$555,377.82

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:		$223,671,658.28

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMU.02AR19
Distribution Date: 08/25/2003

Distribution by Group
Pool ID		Principal		Interest		Total
Pool - 2011		$217,323,323.22		$6,348,335.06		$223,671,658.28
Aggregate		$217,323,323.22		$6,348,335.06		$223,671,658.28

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 - 2011	$1,568,126,676.92	2587	346	2241	$1,350,803,353.70	$431,377.72	$215,316,876.40	$1,575,069.10	$217,323,323.22
Aggregate	$1,568,126,676.92	2587	346	2241	$1,350,803,353.70	$431,377.72	$215,316,876.40	$1,575,069.10	$217,323,323.22

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 - 2011	8	$4,890,742.25	1	$520,000.00	0	$0.00	0	$0.00
Aggregate	8	$4,890,742.25	1	$520,000.00	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 - 2011		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(2011)			0			$0.00
Aggregate			0			$0.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMU.02AR19
Distribution Date: 08/25/2003

INSURANCE RESERVES - Group 1(2011)
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.02AR19
Distribution Date: 08/25/2003

The Group B Certificates provide, to the limited extent described in the Prospectus Supplement, credit support, as well as special hazard, bankruptcy, and fraud coverage to certain Certificates. The "Prospectus Supplement" is that certain Prospectus Supplement, dated December 19, 2002 to that certain Prospectus Supplement, dated November 21, 2002, to which certain certificates were offered. The special hazard, bankruptcy, and Fraud coverage (collectively, "Credit Enhancements") provided by the B certificates provide coverage to the Loans, subject to the conditions and limitations to payment specified thereunder.



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			$20,952,236.52
B2			$15,963,133.62
B3			$7,981,566.82
B4			$2,992,463.92
B5			$2,992,463.92
B6			$4,992,035.93
Total			$55,873,900.73
Capitalized items used but not defined herein have the meanings ascribed to them in the Prospectus Supplement.
The amount of the special hazard coverage, bankruptcy coverage, and fraud coverage, as of the above referenced distribution date, is $0.00, $0.00, $0.00 respectively, and such coverages are referred to in the table above under the column "Insurance Type" as "special hazard," "bankruptcy bond," and "mortgage repurchase," respectively. However, no policy of insurance exists for any such coverage, notwithstanding the reference to "insurance."

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMU.02AR19
Distribution Date: 08/25/2003

Aggregate ARM Information by Group
Pool ID	Netwac	Margin
Pool - 2011	4.85803%	2.32398%
Aggregate	4.85803%	2.32411%

WAMU MORTGAGE PASS THROUGH CERT SER 2002-AR19 8-K