UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) ~~August~~September 2527, 2004

Bear Stearns Asset Backed Securities Inc.
(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction
of incorporation)

333-91334
(Commission
File Number)

13-3836437
(IRS Employer
Identification No.)

383 Madison Avenue, New York, New York
(Address of principal executive offices)

10179
(Zip Code)

Registrant's telephone number, including area code 212-272-2000

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

[ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

[ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Section 8 - Other Events

Item 8.01. Other Events.

This current report on Form 8-K relates to the monthly distribution reported to the holders of Bear Stearns Asset Backed Securities Trust 2004-1, Asset-Backed Certificates, Series 2004-1, which was made on ~~August~~September 2527, 2004.

Section 9 - Financial Statements and Exhibits

Item 9.01 Financial Statements and Exhibits.

99.1 Monthly Distribution Report pursuant to Section 5.05 of the Pooling and Servicing Agreement for the distribution on ~~August~~September 2527, 2004.

(Exhibit No. Description)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

LASALLE BANK NATIONAL ASSOCIATION IN ITS CAPACITY AS TRUSTEE UNDER THE POOLING AND SERVICING AGREEMENT ON BEHALF OF BEAR STEARNS ASSET BACKED SECURITIES INC., REGISTRANT

By: /s/ Russell Goldenberg Russell Goldenberg Group Senior Vice President Date: ~~August~~September 30, 2004

Bear Stearns Asset Backed Securities Trust Asset-Backed Certificates Series 2004-1 ABN AMRO Acct: 721757.2 Reporting Package Table of Contents Payment Date:Prior Payment:Next Payment:Record Date: 2527-~~Aug~~Sep-~~0425~~0427-~~Aug~~Sep-04 2625-~~Jul~~Aug-04 2725-~~Sep~~Oct-04 24-~~Aug~~Sep-04 Administrator:Rita Lopez 312.904.0351rita.lopez@abnamro.com Analyst:Anty Huang 714.259.6269 anty.huang@abnamro.com Statement Date: 135 S. LaSalle Street, Suite 1625Chicago, IL 60603USA Statements to CertificateholdersCash Reconciliation SummaryBond Interest ReconciliationOther Related Information Asset-Backed Facts ~ 15 Month Loan Status Summary Part I Asset-Backed Facts ~ 15 Month Loan Status Summary Part IIAsset-Backed Facts ~ 15 Month Loan Payoff/Loss Summary Realized Loss DetailHistorical REO Report Page 2-4Page 5-7Page 8Page 9 Page 10 Page 11Page 12 Page 13Page 14 Page(s) Information is available for this issue from the following sources Issue Id: Monthly Data FileName: BSABS041 ~~BSABS041_200408_3~~BSABS041_200409_3.ZIP Closing Date: First Payment Date: Rated Final Payment: Date: 8-Apr-0426-Apr-04 26-Jun-34 Parties to The Transaction Issuer: Bear Stearns Asset Backed Securities, Inc./Bear Stearns Asset Backed Securities, Inc. Depositor: Bear Stearns Asset Backed Securities, Inc. Underwriter: Bear Stearns & Co. Inc. Master Servicer: EMC Mortgage Corporation Rating Agency: Fitch Ratings/Standard & Poor's 800.246.5761 LaSalle Factor Line LaSalle Web Site Servicer Web Site www.emcmortgagecorp.com www.etrustee.net Page 1 of 14 2423-~~Aug~~Sep-2004 - ~~11:~~12:16 (Q166-Q177) (c) 2004 LaSalle Bank N.A. Class CUSIP Original Opening Principal Principal Negative Closing Interest Interest Pass-Through Per $ 1000 Per $ 1000 Per $ 1000 Per $ 1000 Per $ 1000 Per $ 1000 Per $ 1000 Next Rate(3) WAC:WAMM:Current Index:Next Index: Payment Date:Prior Payment:Next Payment:Record Date: 8.~~930623~~930393% 1.~~450000~~615000%1.~~615000~~840000% 2527-~~Aug~~Sep-~~0425~~0427-~~Aug~~Sep-04 2625-~~Jul~~Aug-04 2725-~~Sep~~Oct-04 24-~~Aug~~Sep-04 Bear Stearns Asset Backed Securities Trust Asset-Backed Certificates Series 2004-1 Face Value (1) Balance Payment Adj. or Loss Amortization Balance Payment (2) Adjustment Rate ~~270~~268 REMIC III Statement Date: ABN AMRO Acct: 721757.2 ~~814~~766.~~960236133~~090410325 4870.~~869825808~~375017824 0.000000000 ~~766~~695.~~090410325~~715392501 1.~~106987662~~260537935 12.~~795000000~~020000000% 0.00 0.00 0.000000000 1.~~63000000~~79500000% 0.000000000 07384YSV9 A-1 158,216,000.00 ~~128~~121,~~939~~207,~~748~~760.7236 711,~~731~~134,~~988~~453.3682 0.00 ~~121~~110,~~207~~073,~~760~~306.3654 ~~175~~199,~~143~~437.1627 1000.000000000 0.000000000 0.000000000 1000.000000000 1.~~641666721~~957083320 2.~~135000000~~360000000% 0.00 0.00 0.000000000 12.~~97000000~~13500000% 0.000000000 07384YSW7 A-2 30,761,000.00 30,761,000.00 0.00 0.00 30,761,000.00 5060,~~499~~201.3184 1000.000000000 0.000000000 0.000000000 1000.000000000 4.166666813 Fixed 0.00 0.00 0.000000000 5.00000000% 0.000000000 N 07384YSX5 A-IO 22,837,000.00 22,837,000.00 0.00 0.00 22,837,000.00 95,154.17 1000.000000000 0.000000000 0.000000000 1000.000000000 12.~~750000000~~076250071 2.~~265000000~~490000000% 0.00 0.00 0.000000000 2.~~10000000~~26500000% 0.000000000 07384YSY3 M-1 17,699,000.00 17,699,000.00 0.00 0.00 17,699,000.00 3036,~~973~~747.2555 1000.000000000 0.000000000 0.000000000 1000.000000000 2.~~458333611~~855417014 3.~~115000000~~340000000% 0.00 0.00 0.000000000 23.~~95000000~~11500000% 0.000000000 07384YSZ0 M-2 11,990,000.00 11,990,000.00 0.00 0.00 11,990,000.00 2934,~~475~~236.4245 1000.000000000 0.000000000 0.000000000 1000.000000000 3.~~208333698~~680416028 4.~~015000000~~240000000% 0.00 0.00 0.000000000 34.~~85000000~~01500000% 0.000000000 07384YTF3 M-3 4,567,000.00 4,567,000.00 0.00 0.00 4,567,000.00 1416,~~652~~808.46 1000.000000000 0.000000000 0.000000000 1000.000000000 34.~~500000000~~001249115 4.~~365000000~~590000000% 0.00 0.00 0.000000000 4.~~20000000~~36500000% 0.000000000 07384YTA4 B-1 2,826,000.00 2,826,000.00 0.00 0.00 2,826,000.00 911,~~891~~307.0053 1000.000000000 0.000000000 0.000000000 1000.000000000 45.~~541668828~~147081712 5.~~615000000~~840000000% 0.00 0.00 0.000000000 5.~~45000000~~61500000% 0.000000000 07384YTB2 B-2 2,313,000.00 2,313,000.00 0.00 0.00 2,313,000.00 1011,~~504~~905.8820 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 ~~9ABSQ174~~9ABSQ1741 B-IO 888.87 0.00 0.00 0.00 0.00 0.00 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 ~~9ABSQ175~~9ABSQ1758 R-I 50.00 0.00 0.00 0.00 0.00 0.00 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 ~~9ABSQ176~~9ABSQ1766 R-II 50.00 0.00 0.00 0.00 0.00 0.00 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 ~~9ABSQ177~~9ABSQ1774 R-III 50.00 0.00 0.00 0.00 0.00 0.00 Total P&I Payment 0.00 0.00 228,373,038.87 ~~199~~191,~~095~~363,~~748~~760.7236 811,~~148~~600,~~282~~252.0129 Total ~~191~~180,~~363~~229,~~760~~306.3654 711,~~731~~134,~~988~~453.3682 0.00 ~~416~~465,~~293~~798.6547 2423-~~Aug~~Sep-2004 - ~~11:~~12:16 (Q166-Q177) (c) 2004 LaSalle Bank N.A. Page 2 of 14 Notes: (1) N denotes notional balance not included in total (2) Accrued Interest Plus/Minus Interest Adjustment Minus Deferred Interest equals Interest Payment (3) Estimated. * Denotes Controlling Class Class CUSIP Original Opening Principal Principal Negative Closing Interest Interest Pass-Through Per $ 1000 Per $ 1000 Per $ 1000 Per $ 1000 Per $ 1000 Per $ 1000 Per $ 1000 Next Rate(3) WAC:WAMM:Current Index:Next Index: Payment Date:Prior Payment:Next Payment:Record Date: 8.~~930623~~930393% 1.~~450000~~615000%1.~~615000~~840000% 2527-~~Aug~~Sep-~~0425~~0427-~~Aug~~Sep-04 2625-~~Jul~~Aug-04 2725-~~Sep~~Oct-04 24-~~Aug~~Sep-04 Bear Stearns Asset Backed Securities Trust Asset-Backed Certificates Series 2004-1 Face Value (1) Balance Payment Adj. or Loss Amortization Balance Payment (2) Adjustment Rate ~~270~~268 Basis Risk Shortfall Distribution Statement Date: ABN AMRO Acct: 721757.2 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 07384YSV9 A-1 0.00 0.00 0.00 0.00 0.00 0.00 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 07384YSW7 A-2 0.00 0.00 0.00 0.00 0.00 0.00 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 07384YSX5 A-IO 0.00 0.00 0.00 0.00 0.00 0.00 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 07384YSY3 M-1 0.00 0.00 0.00 0.00 0.00 0.00 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 07384YSZ0 M-2 0.00 0.00 0.00 0.00 0.00 0.00 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 07384YTF3 M-3 0.00 0.00 0.00 0.00 0.00 0.00 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 07384YTA4 B-1 0.00 0.00 0.00 0.00 0.00 0.00 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 07384YTB2 B-2 0.00 0.00 0.00 0.00 0.00 0.00 Total P&I Payment 0.00 0.00 0.00 0.00 0.00 Total 0.00 0.00 0.00 0.00 2423-~~Aug~~Sep-2004 - ~~11:~~12:16 (Q166-Q177) (c) 2004 LaSalle Bank N.A. Page 3 of 14 Notes: (1) N denotes notional balance not included in total (2) Accrued Interest Plus/Minus Interest Adjustment Minus Deferred Interest equals Interest Payment (3) Estimated. * Denotes Controlling Class Class CUSIP Original Opening Principal Principal Negative Closing Interest Interest Pass-Through Per $ 1000 Per $ 1000 Per $ 1000 Per $ 1000 Per $ 1000 Per $ 1000 Per $ 1000 Next Rate(3) WAC:WAMM:Current Index:Next Index: Payment Date:Prior Payment:Next Payment:Record Date: 8.~~930623~~930393% 1.~~450000~~615000%1.~~615000~~840000% 2527-~~Aug~~Sep-~~0425~~0427-~~Aug~~Sep-04 2625-~~Jul~~Aug-04 2725-~~Sep~~Oct-04 24-~~Aug~~Sep-04 Bear Stearns Asset Backed Securities Trust Asset-Backed Certificates Series 2004-1 Face Value (1) Balance Payment Adj. or Loss Amortization Balance Payment (2) Adjustment Rate ~~270~~268 Yield Maintenance Account Payment Statement Date: ABN AMRO Acct: 721757.2 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 A-1 0.00 0.00 0.00 0.00 0.00 0.00 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 A-2 0.00 0.00 0.00 0.00 0.00 0.00 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 M-1 0.00 0.00 0.00 0.00 0.00 0.00 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 M-2 0.00 0.00 0.00 0.00 0.00 0.00 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 M-3 0.00 0.00 0.00 0.00 0.00 0.00 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 B-1 0.00 0.00 0.00 0.00 0.00 0.00 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 B-2 0.00 0.00 0.00 0.00 0.00 0.00 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 0.00 0.00 0.000000000 N/A 0.000000000 Excess YM 0.00 0.00 0.00 0.00 0.00 0.00 Total P&I Payment 0.00 0.00 0.00 0.00 0.00 Total 0.00 0.00 0.00 0.00 2423-~~Aug~~Sep-2004 - ~~11:~~12:16 (Q166-Q177) (c) 2004 LaSalle Bank N.A. Page 4 of 14 Notes: (1) N denotes notional balance not included in total (2) Accrued Interest Plus/Minus Interest Adjustment Minus Deferred Interest equals Interest Payment (3) Estimated. * Denotes Controlling Class Bear Stearns Asset Backed Securities Trust Payment Date:Prior Payment:Next Payment:Record Date: 2527-~~Aug~~Sep-~~0425~~0427-~~Aug~~Sep-04 2625-~~Jul~~Aug-04 2725-~~Sep~~Oct-04 24-~~Aug~~Sep-04 Asset-Backed Certificates Series 2004-1 ABN AMRO Acct: 721757.2 Statement Date: Cash Reconciliation Summary Current Scheduled Interest Interest Summary Less Deferred Interest Plus Gross Advance Interest Less PPIS Reducing Scheduled Int 1,~~077~~024,~~614~~428.5245 0.00 ) (2331,~~884~~717.4658 Less ASER Interest Adv Reduction 0.00 Less Other Adjustment ~~1,872~~0.4800 Total 1,~~458~~401,~~036~~853.3049 Unscheduled Interest:Prepayment Penalties 0.00 Yield Maintenance Penalties 0.00 Other Interest Proceeds 0.00 Total 0.00 Less Fees & Expenses Paid By/To Servicer Less Fee Paid To Servicer Less Fee Strips Paid by Servicer Special Servicing Fees Interest Due Serv on Advances Recoup of Prior Advances Misc. Fees & Expenses Total Unscheduled Fees & ExpensesTotal Interest Due Trust Less Fees & Expenses Paid By/To TrustTrustee FeeFee StripsMisc. FeesInterest Reserve Withholding Plus Interest Reserve DepositTotal Total Interest Due Certs Principal Summary Scheduled Principal: CurrentAdvanced Total Scheduled Unscheduled Principal: Curtailments Prepayments in FullLiquidation ProceedsRepurchase Proceeds Other Principal ProceedsTotal Unscheduled Remittance Principal Remittance P&I Due Trust Remittance P&I Due Certs Pool Balance Summary Beginning PoolScheduled PrincipalUnscheduled PrincipalDeferred InterestLiquidationsRepurchases Ending Pool Balance Count Principal Interest Prior OutstandingPlus Current PeriodLess Recovered Ending Outstanding Servicing Fee Summary Current Servicing FeesPlus Fees Advanced for PPISLess Reduction for PPISPlus Delinquent Servicing Fees Total Servicing Fees PPIS Summary Gross PPISReduced by PPIEReduced by Shortfalls in FeesReduced by Other Amounts PPIS Reducing ScheduledInterest PPIS Reducing Servicing FeePPIS Due Certificate 0.00 0.00 0.000.00 0.00 0.00 1,~~420~~374,~~448~~991.4372 ) (2,~~530~~446.6349 0.000.000.00 ) (2,~~530~~446.6349 ~~257~~248,~~892~~371.5528 83,~~976~~112.4265 ~~341~~331,~~868~~483.9793 ~~167~~21,~~569~~467.9689 69,~~220~~874,~~925~~755.2724 0.000.000.00 69,~~388~~896,~~495~~223.~~236~~13 10,~~730~~227,~~364~~707.2006 811,~~150~~602,~~812~~698.6378 811,~~148~~600,~~281~~252.9929 ~~202~~195,~~450~~719,~~647~~242.1470 32,~~010~~931 ~~341~~331,~~868~~483.9793 69,~~388~~896,~~495~~223.2313 78105 0.000.00 ~~1,040.24~~0 1 0.00 0 ~~195~~185,~~719~~491,~~242~~535.7064 2,~~931~~826 ~~143~~150,~~733~~430.9664 ~~724~~781,~~641~~156.8223 83,~~976~~112.4265 ~~406~~409,~~178~~142.7261 ~~150~~159,~~430~~815.6472 ~~781~~829,~~156~~018.2315 6158,~~472~~579.3435 0.00 ) (2331,~~884~~717.4658 22,~~882~~970.1034 6049,~~469~~832.9811 2331,~~884~~717.4658 0.000.000.00 2331,~~884~~717.~~4623~~5831,~~884~~717.4658 0.00 Advance Summary (Advance Made by Servicer) ) (3726,~~587~~861.8877 1,~~417~~372,~~917~~545.7923 Interest Not Advanced ( Current Period ) 0.00 ~~406~~409,~~178~~142.7261 Workout FeesLiquidation Fees 0.000.00 Less Non Recovered ) (~~349~~361,~~664~~280.3170 ) (7773,~~279~~727.7457 0.00 0.00 0.00 Current ~~1,040~~0.2400 Cumulative 1,040.24 % of Cutoff Balance % 0.00 Realized Loss Distribution Cumulative ~~406~~489,~~518~~631.9156 1,~~373~~621,~~262~~633.3361 12,~~779~~111,~~781~~265.2417 ~~724~~745,~~002~~470.1706 3039,~~119~~994,~~536~~291.0327 10,419.12 0.000.00 3242,~~633~~861,~~738~~445.5662 3040,~~853~~750,~~957~~180.3245 Page 5 of 14 2423-~~Aug~~Sep-2004 - ~~11:~~12:16 (Q166-Q177) (c) 2004 LaSalle Bank N.A. Bear Stearns Asset Backed Securities Trust Payment Date:Prior Payment:Next Payment:Record Date: 2527-~~Aug~~Sep-~~0425~~0427-~~Aug~~Sep-04 2625-~~Jul~~Aug-04 2725-~~Sep~~Oct-04 24-~~Aug~~Sep-04 Asset-Backed Certificates Series 2004-1 ABN AMRO Acct: 721757.2 Statement Date: Cash Reconciliation Summary Fixed Rate Mortgage Loans Current Scheduled Interest Interest Summary Less Deferred Interest Plus Gross Advance Interest Less PPIS Reducing Scheduled Int ~~558~~532,~~679~~659.4521 0.00 ) (811,~~984~~785.2203 Less ASER Interest Adv Reduction 0.00 Less Other Adjustment 0.00 Total ~~749~~727,~~464~~312.4099 Unscheduled Interest:Prepayment Penalties 0.00 Yield Maintenance Penalties 0.00 Other Interest Proceeds 0.00 Total 0.00 Less Fees & Expenses Paid By/To Servicer Less Fee Paid To Servicer Less Fee Strips Paid by Servicer Special Servicing Fees Interest Due Serv on Advances Recoup of Prior Advances Misc. Fees & Expenses Total Unscheduled Fees & ExpensesTotal Interest Due Trust Less Fees & Expenses Paid By/To TrustTrustee FeeFee StripsMisc. FeesInterest Reserve Withholding Plus Interest Reserve DepositTotal Total Interest Due Certs Principal Summary Scheduled Principal: CurrentAdvanced Total Scheduled Unscheduled Principal: Curtailments Prepayments in FullLiquidation ProceedsRepurchase Proceeds Other Principal ProceedsTotal Unscheduled Remittance Principal Remittance P&I Due Trust Remittance P&I Due Certs Pool Balance Summary Beginning PoolScheduled PrincipalUnscheduled PrincipalDeferred InterestLiquidationsRepurchases Ending Pool Balance Count Principal Interest Prior OutstandingPlus Current PeriodLess Recovered Ending Outstanding Servicing Fee Summary Current Servicing FeesPlus Fees Advanced for PPISLess Reduction for PPISPlus Delinquent Servicing Fees Total Servicing Fees PPIS Summary Gross PPISReduced by PPIEReduced by Shortfalls in FeesReduced by Other Amounts PPIS Reducing ScheduledInterest PPIS Reducing Servicing FeePPIS Due Certificate 0.00 0.00 0.000.00 0.00 0.00 ~~728~~710,~~342~~395.9298 ) (1,~~212~~184.6133 0.000.000.00 ) (1,~~212~~184.6133 ~~175~~170,~~678~~106.5807 5352,~~270~~588.5945 ~~228~~222,~~949~~694.1752 2313,~~315~~590.5842 24,~~010~~002,~~294~~204.4687 0.000.000.00 24,~~033~~015,~~610~~795.~~042~~294,~~262~~238,~~559~~489.2181 24,~~990~~948,~~902~~885.1379 24,~~989~~947,~~689~~701.5245 9794,~~009~~746,~~130~~571.6443 1,~~887~~849 ~~228~~222,~~949~~694.1752 24,~~033~~015,~~610~~795.0429 3862 0.000.00 0 0.00 0 9490,~~746~~508,~~571~~081.4362 1,~~849~~787 8893,~~622~~545.0981 ~~329~~366,~~338~~813.2510 5352,~~270~~588.5945 ~~199~~206,~~769~~438.1781 9396,~~545~~871.8127 ~~366~~395,~~813~~942.1002 3028,~~105~~702.7005 0.00 ) (811,~~984~~785.2203 10,~~314~~775.7769 3127,~~436~~692.2571 811,~~984~~785.2203 0.000.000.00 811,~~984~~785.~~228~~0311,~~984~~785.2203 0.00 Advance Summary (Advance Made by Servicer) ) (2116,~~121~~917.4801 ~~727~~709,~~130~~211.3164 Interest Not Advanced ( Current Period ) 0.00 ~~199~~206,~~769~~438.1781 Workout FeesLiquidation Fees 0.000.00 Less Non Recovered ) (~~162~~177,~~294~~309.3289 ) (4849,~~346~~262.8799 0.00 0.00 0.00 Current 0.00 Cumulative 0.00 % of Cutoff Balance % 0.00 Realized Loss Distribution Cumulative ~~261~~314,~~769~~358.8934 ~~928~~1,~~201~~098,308.9603 1,~~189~~412,~~971~~666.8537 ~~143~~157,~~664~~254.0749 1216,~~869~~871,~~750~~955.2916 10,419.12 0.000.00 1418,~~213~~452,~~805~~295.3314 1317,~~023~~039,~~833~~628.4877 Page 6 of 14 2423-~~Aug~~Sep-2004 - ~~11:~~12:16 (Q166-Q177) (c) 2004 LaSalle Bank N.A. Bear Stearns Asset Backed Securities Trust Payment Date:Prior Payment:Next Payment:Record Date: 2527-~~Aug~~Sep-~~0425~~0427-~~Aug~~Sep-04 2625-~~Jul~~Aug-04 2725-~~Sep~~Oct-04 24-~~Aug~~Sep-04 Asset-Backed Certificates Series 2004-1 ABN AMRO Acct: 721757.2 Statement Date: Cash Reconciliation Summary Adjustable Rate Mortgage Loans Current Scheduled Interest Interest Summary Less Deferred Interest Plus Gross Advance Interest Less PPIS Reducing Scheduled Int ~~518~~491,~~935~~769.0725 0.00 ) (1419,~~900~~932.2455 Less ASER Interest Adv Reduction 0.00 Less Other Adjustment ~~1,872~~0.4800 Total ~~708~~674,~~571~~540.9050 Unscheduled Interest:Prepayment Penalties 0.00 Yield Maintenance Penalties 0.00 Other Interest Proceeds 0.00 Total 0.00 Less Fees & Expenses Paid By/To Servicer Less Fee Paid To Servicer Less Fee Strips Paid by Servicer Special Servicing Fees Interest Due Serv on Advances Recoup of Prior Advances Misc. Fees & Expenses Total Unscheduled Fees & ExpensesTotal Interest Due Trust Less Fees & Expenses Paid By/To TrustTrustee FeeFee StripsMisc. FeesInterest Reserve Withholding Plus Interest Reserve DepositTotal Total Interest Due Certs Principal Summary Scheduled Principal: CurrentAdvanced Total Scheduled Unscheduled Principal: Curtailments Prepayments in FullLiquidation ProceedsRepurchase Proceeds Other Principal ProceedsTotal Unscheduled Remittance Principal Remittance P&I Due Trust Remittance P&I Due Certs Pool Balance Summary Beginning PoolScheduled PrincipalUnscheduled PrincipalDeferred InterestLiquidationsRepurchases Ending Pool Balance Count Principal Interest Prior OutstandingPlus Current PeriodLess Recovered Ending Outstanding Servicing Fee Summary Current Servicing FeesPlus Fees Advanced for PPISLess Reduction for PPISPlus Delinquent Servicing Fees Total Servicing Fees PPIS Summary Gross PPISReduced by PPIEReduced by Shortfalls in FeesReduced by Other Amounts PPIS Reducing ScheduledInterest PPIS Reducing Servicing FeePPIS Due Certificate 0.00 0.00 0.000.00 0.00 0.00 ~~692~~664,~~105~~595.5174 ) (1,~~318~~262.0216 0.000.000.00 ) (1,~~318~~262.0216 8278,~~213~~265.9721 30,~~705~~524.8320 ~~112~~108,~~919~~789.8041 ~~144~~7,~~254~~877.3847 45,~~210~~872,~~630~~550.8137 0.000.000.00 45,~~354~~880,~~885~~427.~~194~~845,~~467~~989,~~804~~217.9925 56,~~159~~653,~~910~~812.5099 56,~~158~~652,~~592~~550.4884 ~~105~~100,~~441~~972,~~516~~671.5027 1,~~123~~082 ~~112~~108,~~919~~789.8041 45,~~354~~880,~~885~~427.1984 4043 0.000.00 ~~1,040.24~~0 1 0.00 0 ~~100~~94,~~972~~983,~~671~~454.2702 1,~~082~~039 5556,~~111~~884.8783 ~~395~~414,~~303~~343.5714 30,~~705~~524.8320 ~~206~~202,~~409~~703.5580 5662,~~884~~944.8345 ~~414~~433,~~343~~076.1413 3129,~~366~~877.6430 0.00 ) (1419,~~900~~932.2455 12,~~567~~194.3364 2922,~~033~~139.7240 1419,~~900~~932.2455 0.000.000.00 1419,~~900~~932.~~2414~~5519,~~900~~932.2455 0.00 Advance Summary (Advance Made by Servicer) ) (169,~~466~~944.4076 ~~690~~663,~~787~~333.4959 Interest Not Advanced ( Current Period ) 0.00 ~~206~~202,~~409~~703.5580 Workout FeesLiquidation Fees 0.000.00 Less Non Recovered ) (~~187~~183,~~369~~970.9981 ) (2824,~~932~~464.8758 0.00 0.00 0.00 Current ~~1,040~~0.2400 Cumulative 1,040.24 % of Cutoff Balance % 0.00 Realized Loss Distribution Cumulative ~~144~~175,~~749~~273.0222 ~~445~~523,~~060~~325.3758 ~~589~~698,~~809~~598.3980 ~~580~~588,~~338~~215.1057 1723,~~249~~122,~~785~~336.7411 0.000.000.00 1824,~~419~~409,~~933~~150.2348 1723,~~830~~710,~~123~~551.8468 Page 7 of 14 2423-~~Aug~~Sep-2004 - ~~11:~~12:16 (Q166-Q177) (c) 2004 LaSalle Bank N.A. Bear Stearns Asset Backed Securities Trust Class Accrued Payment Date:Prior Payment:Next Payment:Record Date: 2527-~~Aug~~Sep-~~0425~~0427-~~Aug~~Sep-04 2625-~~Jul~~Aug-04 2725-~~Sep~~Oct-~~04 24~~0424-~~Aug~~Sep-04 Asset-Backed Certificates Series 2004-1 ABN AMRO Acct: 721757.2 Bond Interest Reconciliation Interest Losses Current Cumulative Accrual Interest Payment Amount Interest Certificate Forward Carry- Certificate Method Days Statement Date: Distributable Applied Realized Remainin Int. Carry- forward PTR Sched Prin Unsched Prin Extra Prin Capping Subsequent Recovery Liquidation Proceeds Principal Allocation Allocation of Excess YM Remaining Carry Forward Total Carry Forward Basis Risk Total Int. 0.00 A-1 3033 ~~175~~199,~~143~~437.1627 ~~175~~199,~~143~~437.1627 ~~175~~199,~~143~~437.1627 Act/360 0.00 0.00 0.00 ~~341~~331,~~868~~483.9793 N 0.00 0.00 0.00 0.00 0.00 69,~~388~~896,~~495~~223.2313 1906,~~001,624~~746.1676 0.00 A-2 3033 5060,~~499~~201.3184 5060,~~499~~201.3184 5060,~~499~~201.3184 Act/360 0.00 0.00 0.00 0.00 N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 A-IO 30 95,154.17 95,154.17 95,154.17 30/360 0.00 0.00 0.00 0.00 N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 M-1 3033 3036,~~973~~747.2555 3036,~~973~~747.2555 3036,~~973~~747.2555 Act/360 0.00 0.00 0.00 0.00 N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 M-2 3033 2934,~~475~~236.4245 2934,~~475~~236.4245 2934,~~475~~236.4245 Act/360 0.00 0.00 0.00 0.00 N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 M-3 3033 1416,~~652~~808.46 1416,~~652~~808.46 1416,~~652~~808.46 Act/360 0.00 0.00 0.00 0.00 N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 B-1 3033 911,~~891~~307.0053 911,~~891~~307.0053 911,~~891~~307.0053 Act/360 0.00 0.00 0.00 0.00 N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 B-2 3033 1011,~~504~~905.8820 1011,~~504~~905.8820 1011,~~504~~905.8820 Act/360 0.00 0.00 0.00 0.00 N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 B-IO 30 0.00 0.00 0.00 0.00 0.00 0.00 0.00 N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 ~~416~~465,~~293~~798.6547 ~~416~~465,~~293~~798.6547 ~~416~~465,~~293~~798.6547 0.00 0.00 0.00 ~~341~~331,~~868~~483.9793 0.00 0.00 0.00 0.00 0.00 69,~~388~~896,~~495~~223.2313 1906,~~001,624~~746.1676 2423-~~Aug~~Sep-2004 - ~~11:~~12:16 (Q166-Q177) (c) 2004 LaSalle Bank N.A. Page 8 of 14 Bear Stearns Asset Backed Securities Trust Payment Date:Prior Payment:Next Payment:Record Date: 2527-~~Aug~~Sep-~~0425~~0427-~~Aug~~Sep-04 2625-~~Jul~~Aug-04 2725-~~Sep~~Oct-04 24-~~Aug~~Sep-04 Asset-Backed Certificates Series 2004-1 ABN AMRO Acct: 721757.2 Other Related Information Statement Date: Excess Cashflow Excess Yield Maintenance 0.00 Trigger Event 0.00 3 month Rolling Delinquency Rate % 1213.2733 No $45,~~355~~262,~~482~~229.3410 Overcollateralization Amount Target Overcollateralization $7,422,118.89 Page 9 of 14 2423-~~Aug~~Sep-2004 - ~~11:~~12:16 (Q166-Q177) (c) 2004 LaSalle Bank N.A. Bear Stearns Asset Backed Securities Trust Payment Date:Prior Payment:Next Payment:Record Date: 2527-~~Aug~~Sep-~~0425~~0427-~~Aug~~Sep-04 2625-~~Jul~~Aug-04 2725-~~Sep~~Oct-04 24-~~Aug~~Sep-04 Asset-Backed Certificates Series 2004-1 ABN AMRO Acct: 721757.2 Asset-Backed Facts ~ 15 Month Historical Loan Status Summary Part I Distribution Date REO # Balance Statement Date: Foreclosure Delinq 3+ Months Delinq 2 Months Delinq 1 Month Current # Balance # Balance # Balance # Balance # Balance Delinquency Aging Categories 7.01% 7.28% 2.62% 2.90% 75 2.65% 3,987,614 2.15% 1.66% 2.29% 0.11% 0.23% 27-Sep-04 198 13,503,396 74 5,385,618 47 4,250,973 3 417,511 2,429 157,946,424 85.95% 85.15% 6.62% 7.10% 2.59% 2.88% 61 2.08% 3,173,398 1.62% 1.40% 2.30% 0.03% 0.03% 25-Aug-04 194 13,889,677 76 5,628,312 41 4,496,464 1 49,958 2,558 168,481,434 87.27% 86.08% 7.01% 7.39% 2.19% 2.51% 46 1.53% 3,046,061 1.50% 1.03% 1.18% 0.00% 0.00% 26-Jul-04 211 14,963,366 66 5,074,915 31 2,392,081 0 0 2,656 176,974,224 88.24% 87.42% 5.52% 5.86% 2.53% 2.47% 32 1.04% 2,595,004 1.24% 0.65% 0.69% 0.00% 0.00% 25-Jun-04 170 12,247,204 78 5,168,040 20 1,444,643 0 0 2,782 187,438,099 90.27% 89.73% 5.47% 5.03% 1.65% 1.99% 17 0.54% 856,653 0.40% 0.29% 0.58% 0.00% 0.00% 25-May-04 172 10,843,591 52 4,292,731 9 1,241,650 0 0 2,892 198,174,248 92.04% 92.00% 5.37% 5.76% 1.65% 1.57% 2 0.06% 449,481 0.20% 0.03% 0.02% 0.00% 0.00% 26-Apr-04 173 12,863,795 53 3,503,681 1 47,274 0 0 2,990 206,635,058 92.89% 92.45% Page 10 of 14 2423-~~Aug~~Sep-2004 - ~~11:~~12:16 (Q166-Q177) (c) 2004 LaSalle Bank N.A. Bear Stearns Asset Backed Securities Trust Payment Date:Prior Payment:Next Payment:Record Date: 2527-~~Aug~~Sep-~~0425~~0427-~~Aug~~Sep-04 2625-~~Jul~~Aug-04 2725-~~Sep~~Oct-04 24-~~Aug~~Sep-04 Asset-Backed Certificates Series 2004-1 ABN AMRO Acct: 721757.2 Distribution Date Statement Date: Current 31 - 60 Days 61 - 90 Days 90 + Days # Balance # Balance # Balance # Balance Current 31 - 60 Days 61 - 90 Days 90 + Days # Balance # Balance # Balance # Balance In Foreclosure and Delinquent In Bankruptcy and Delinquent In REO and Delinquent Asset-Backed Facts ~ 15 Month Historical Loan Status Summary Part II Current # # # 31 - 60 Days 61 - 90 Days 90 + Days # Balance Balance Balance Balance 27-Sep-04 0 0 3 130,649 31 2,046,871 15 920,266 43 4,097,202 1,159,226 26 0.00% 0.00% 0.11% 0.07% 1.52% 2.21% 1.10% 1.10% 0.53% 0.50% 0.92% 0.62% 0.04% 0.01% 6.19% 4.75% 1 23,122 175 8,809,338 0 0 0 0 0 3 417,511 0.00% 0.00% 0.00% 0.11% 0.00% 0.00% 0.00% 0.23% 0 25-Aug-04 0 0 1 18,279 31 1,876,864 13 705,701 40 4,478,185 1,356,401 23 0.00% 0.00% 0.03% 0.01% 1.36% 2.29% 1.06% 0.96% 0.44% 0.36% 0.78% 0.69% 0.00% -0.00% 6.69% 5.25% 0 0 196 10,277,411 0 0 0 0 0 1 49,958 0.00% 0.00% 0.00% 0.03% 0.00% 0.00% 0.00% 0.03% 0 26-Jul-04 1 18,411 0 0 32 2,315,589 12 764,867 30 2,373,670 1,189,707 16 0.03% 0.01% 0.00% 0.00% 1.00% 1.17% 1.06% 1.14% 0.40% 0.38% 0.53% 0.59% 0.00% 0.00% 6.91% 5.41% 0 0 208 10,955,868 0 0 0 0 0 0 0 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0 25-Jun-04 0 0 3 138,099 30 2,132,795 10 534,613 16 1,278,379 1,010,004 14 0.00% 0.00% 0.10% 0.07% 0.52% 0.61% 0.97% 1.02% 0.32% 0.26% 0.45% 0.48% 0.03% 0.01% 6.98% 5.47% 1 28,165 215 11,427,494 0 0 0 0 0 0 0 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0 25-May-04 0 0 0 0 32 2,003,360 15 831,357 8 1,117,864 418,175 7 0.00% 0.00% 0.00% 0.00% 0.25% 0.52% 1.02% 0.93% 0.48% 0.39% 0.22% 0.19% 0.03% 0.06% 7.00% 5.46% 1 123,786 220 11,751,432 0 0 0 0 0 0 0 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0 26-Apr-04 0 0 0 0 31 2,158,133 14 715,013 1 47,274 0 0 0.00% 0.00% 0.00% 0.00% 0.03% 0.02% 0.96% 0.97% 0.43% 0.32% 0.00% 0.00% 0.00% 0.00% 6.99% 5.25% 0 0 225 11,742,929 0 0 0 0 0 0 0 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0 Page 11 of 14 2423-~~Aug~~Sep-2004 - ~~11:~~12:16 (Q166-Q177) (c) 2004 LaSalle Bank N.A. Bear Stearns Asset Backed Securities Trust Payment Date:Prior Payment:Next Payment:Record Date: 2527-~~Aug~~Sep-~~0425~~0427-~~Aug~~Sep-04 2625-~~Jul~~Aug-04 2725-~~Sep~~Oct-04 24-~~Aug~~Sep-04 Asset-Backed Certificates Asset-Backed Facts ~ 15 Month Historical Payoff/Loss Summary Distribution Date Ending Pool (1) Payoffs(2) Penalties Appraisal Reduct. (2) Liquidations (2) Realized Losses (2) Remaining Term Curr Weighted Avg. # Balance # Balance # Amount # Balance # Balance # Amount Life Coupon Remit Statement Date: Amort ABN AMRO Acct: 721757.2 Series 2004-1 27-Sep-04 2,826 86.61% 185,491,536 81.22% 3.58% 5.05% 0 0.00% 0 0.00% 0 0.00% 0 0.00% 0 0.00% 0 0.00% 268 278 8.93% 8.42% 0 0 105 9,874,755 25-Aug-04 2,931 89.83% 195,719,243 85.70% 2.59% 3.07% 0 0.00% 0 0.00% 1 0.03% 1,040 0.00% 1 0.03% 1,040 0.00% 270 280 8.93% 8.42% 0 0 78 6,220,925 26-Jul-04 3,010 92.25% 202,450,647 88.65% 2.34% 2.83% 0 0.00% 0 0.00% 0 0.00% 0 0.00% 0 0.00% 0 0.00% 272 282 8.93% 8.42% 0 0 72 5,901,984 25-Jun-04 3,082 94.45% 208,892,990 91.47% 1.91% 2.81% 0 0.00% 0 0.00% 0 0.00% 0 0.00% 0 0.00% 0 0.00% 273 283 8.93% 8.42% 0 0 60 6,044,172 25-May-04 3,142 96.29% 215,408,872 94.32% 2.36% 3.34% 0 0.00% 0 0.00% 1 0.03% 29,286 0.01% 0 0.00% ) (18,867 -0.01% 274 285 8.92% 8.41% 0 0 76 7,456,474 26-Apr-04 3,219 98.65% 223,499,289 97.87% 1.35% 1.97% 0 0.00% 0 0.00% 0 0.00% 0 0.00% 01 0.0003% 0) (17,827 -0.0001% 275 286 8.93% 8.42% 0 0 44 4,495,981 (1) Percentage based on pool as of cutoff. (2) Percentage based on pool as of beginning of period. Page 12 of 14 2423-~~Aug~~Sep-2004 - ~~11:~~12:16 (Q166-Q177) (c) 2004 LaSalle Bank N.A. Bear Stearns Asset Backed Securities Trust Payment Date:Prior Payment:Next Payment:Record Date: 2527-~~Aug~~Sep-~~0425~~0427-~~Aug~~Sep-04 2625-~~Jul~~Aug-04 2725-~~Sep~~Oct-04 24-~~Aug~~Sep-04 Asset-Backed Certificates Series 2004-1 ABN AMRO Acct: 721757.2 Realized Loss Detail Period Disclosure Control # Appraisal Date Appraisal Value BeginningScheduled Balance Gross Proceeds Gross Proceeds as a % of Sched. Balance Aggregate LiquidationExpenses * Net Liquidation Proceeds Net Proceeds as a % of Sched. Balance Realized Loss Statement Date: 200408 000000000000820 1,040.24 0.00 1,862.84 0.00 1,040.24 0.00% 0.00% Not Avail. Not Avail. 200405 000000000000133 29,286.49 0.00 0.00 48,153.86 ) (18,867.37 0.00% 0.00% Not Avail. Not Avail. 30,326.73 0.00 1,862.84 48,153.86 ) (17,827.13 ~~1,040.24 1,040.24 0.00 1,862.84 0.00~~ Current TotalCumulative 2423-~~Aug~~Sep-2004 - ~~11:~~12:16 (Q166-Q177) (c) 2004 LaSalle Bank N.A. Page 13 of 14 * Aggregate liquidation expenses also include outstanding P&I advances and unpaid servicing fees, unpaid trustee fees, etc.. Bear Stearns Asset Backed Securities Trust Payment Date:Prior Payment:Next Payment:Record Date: 2527-~~Aug~~Sep-~~0425~~0427-~~Aug~~Sep-04 2625-~~Jul~~Aug-04 2725-~~Sep~~Oct-04 24-~~Aug~~Sep-04 Asset-Backed Certificates Series 2004-1 Historical Collateral Level REO Report Property Type Statement Date: State Actual Balance Scheduled Balance Recent Appraisal Value Appraisal Reduction Amount Date Liquidated Liquidation Proceeds Liquidation Expenses Realized Loss Disclosure Control # REO Date City Appraisal Date ABN AMRO Acct: 721757.2 2423-~~Aug~~Sep-2004 - ~~11:~~12:16 (Q166-Q177) (c) 2004 LaSalle Bank N.A. Page 14 of 14

Filing Compare · BEAR STEARNS ASSET BACKED SEC INC SERIES 2004 1