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):  June 25, 2003


                    BEAR STEARNS ASSET BACKED SECURITIES TRUST
             Asset-Backed Certificates, Series 2003-AC1 Trust
              (Exact name of registrant as specified in its charter)

New York (governing law of           333-43091-16       Pending
Pooling and Servicing Agreement)     (Commission
(State or other                      File Number)       IRS EIN
jurisdiction
of Incorporation)




       c/o Wells Fargo Bank Minnesota, N.A.,
       9062 Old Annapolis Road
       Columbia, MD                                        21045
       (Address of principal executive offices)            (Zip Code)

       Registrant's telephone number, including area code:  (410) 884-2000


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



ITEM 5.  Other Events

 On June 25, 2003 a distribution was made to holders of BEAR STEARNS ASSET
 BACKED SECURITIES TRUST, Asset-Backed Certificates, Series 2003-AC1 Trust.


ITEM 7.  Financial Statements and Exhibits

      (c)  Exhibits furnished in accordance with Item 601(a) of
Regulation S-K


           Exhibit Number                      Description

           EX-99.1                             Monthly report distributed to
                                               holders of Asset-Backed
                                               Certificates, Series 2003-AC1
                                               Trust, relating to the June 25,
                                               2003 distribution.



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.



                    BEAR STEARNS ASSET BACKED SECURITIES TRUST
             Asset-Backed Certificates, Series 2003-AC1 Trust

             By:    Wells Fargo Bank Minnesota, N.A., as Master Servicer
             By:   /s/   Beth Belfield, Assistant Vice President
             By:    Beth Belfield, Assistant Vice President

             Date:   6/25/03
                                 INDEX TO EXHIBITS


Exhibit Number            Description

EX-99.1                   Monthly report distributed to holders of Asset-Backed
                          Certificates, Series 2003-AC1 Trust, relating to the
                          June 25, 2003 distribution.









Bear Stearns Asset Backed Securities
Asset-Backed Certificates



Record Date:            5/31/03
Distribution Date:      6/25/03


BSA  Series: 2003-AC1

Contact: Customer Service - CTSLink
         Wells Fargo Bank Minnesota, N.A.
         Securities Administration Services
         7485 New Horizon Way
         Frederick, MD 21703
         Telephone: (301) 815-6600
         Fax:       (301) 815-6660









                                             Certificateholder Distribution Summary

                         Certificate      Certificate         Beginning
                            Class         Pass-Through      Certificate        Interest       Principal
Class           CUSIP    Description             Rate           Balance    Distribution    Distribution

<s>          <c>        <c>            <c>            <c>               <c>             <c>
    A-1        07384YHG4         SEN          4.10300%    418,264,351.07    1,430,115.53   13,668,028.85
    A-IO       07384YHH2         IO           5.00000%              0.00      312,500.00            0.00
    M-1        07384YHJ8         MEZ          4.60600%     26,441,888.64      101,492.78      864,067.18
    M-2        07384YHK5         MEZ          4.96800%     21,634,097.62       89,565.16      706,958.34
    B-1        07384YHL3         SUB          5.66500%      3,847,003.33       18,161.06      125,712.25
    B-2        07384YHM1         SUB          4.57000%     10,576,563.07       38,936.44      345,620.58
    R-1        BSA3AC1R1         RES          0.00000%              0.00            0.00            0.00
    R-2        BSA3AC1R2         RES          0.00000%              0.00            0.00            0.00
    R-3        BSA3AC1R3         RES          0.00000%              0.00            0.00            0.00
     C         BSA03AC1C         SEN          0.00000%              0.00            0.00            0.00
     P                           SEN          0.00000%            100.00       15,254.27            0.00
Totals                                                    480,764,003.73    2,006,025.24   15,710,387.20




                                       Certificateholder Distribution Summary (continued)

                           Current                 Ending                                         Cumulative
                          Realized            Certificate                    Total                  Realized
Class                         Loss                Balance             Distribution                    Losses

<s>           <c>                  <c>                     <c>                      <c>
A-1                            0.00         404,596,322.22            15,098,144.38                      0.00
A-IO                           0.00                   0.00               312,500.00                      0.00
M-1                            0.00          25,577,821.46               965,559.96                      0.00
M-2                            0.00          20,927,139.28               796,523.50                      0.00
B-1                            0.00           3,721,291.08               143,873.31                      0.00
B-2                            0.00          10,230,942.48               384,557.02                      0.00
R-1                            0.00                   0.00                     0.00                      0.00
R-2                            0.00                   0.00                     0.00                      0.00
R-3                            0.00                   0.00                     0.00                      0.00
C                              0.00                   0.00                     0.00                      0.00
P                              0.00                 100.00                15,254.27                      0.00
Totals                         0.00         465,053,616.52            17,716,412.44                      0.00
<FN>
All distributions required by the Pooling and Servicing Agreement have been calculated by the
Certificate Administrator on behalf of the Trustee.




</FN>




                                                Principal Distribution Statement

                         Original          Beginning          Scheduled     Unscheduled
                             Face        Certificate          Principal       Principal                       Realized
Class                      Amount            Balance       Distribution    Distribution      Accretion        Loss (1)

<s>             <c>               <c>                 <c>               <c>             <c>             <c>
A-1                 434,812,000.00     418,264,351.07               0.00   13,668,028.85           0.00            0.00
A-IO                          0.00               0.00               0.00            0.00           0.00            0.00
M-1                  27,488,000.00      26,441,888.64               0.00      864,067.18           0.00            0.00
M-2                  22,490,000.00      21,634,097.62               0.00      706,958.34           0.00            0.00
B-1                   3,999,201.00       3,847,003.33               0.00      125,712.25           0.00            0.00
B-2                  10,995,000.00      10,576,563.07               0.00      345,620.58           0.00            0.00
R-1                           0.00               0.00               0.00            0.00           0.00            0.00
R-2                           0.00               0.00               0.00            0.00           0.00            0.00
R-3                           0.00               0.00               0.00            0.00           0.00            0.00
C                             0.00               0.00               0.00            0.00           0.00            0.00
P                           100.00             100.00               0.00            0.00           0.00            0.00
Totals              499,784,301.00     480,764,003.73               0.00   15,710,387.20           0.00            0.00
<FN>
(1) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed.
    Please Refer to the Prospectus Supplement for a Full Description.

</FN>

 
 

                                           Principal Distribution Statement (continued)

                                     Total                Ending               Ending             Total
                                 Principal           Certificate          Certificate         Principal
 Class                           Reduction               Balance           Percentage      Distribution

 <s>               <c>                     <c>                    <c>                 <c>
 A-1                          13,668,028.85        404,596,322.22           0.93050864     13,668,028.85
 A-IO                                  0.00                  0.00           0.00000000              0.00
 M-1                             864,067.18         25,577,821.46           0.93050864        864,067.18
 M-2                             706,958.34         20,927,139.28           0.93050864        706,958.34
 B-1                             125,712.25          3,721,291.08           0.93050864        125,712.25
 B-2                             345,620.58         10,230,942.48           0.93050864        345,620.58
 R-1                                   0.00                  0.00           0.00000000              0.00
 R-2                                   0.00                  0.00           0.00000000              0.00
 R-3                                   0.00                  0.00           0.00000000              0.00
 C                                     0.00                  0.00           0.00000000              0.00
 P                                     0.00                100.00           1.00000000              0.00
 Totals                       15,710,387.20        465,053,616.52           0.93050865     15,710,387.20

 



                                              Principal Distribution Factors Statement

                           Original           Beginning          Scheduled         Unscheduled
                               Face         Certificate          Principal           Principal
Class (2)                    Amount             Balance       Distribution        Distribution         Accretion


<s>          <c>                    <c>                 <c>                 <c>                <c>
A-1                   434,812,000.00        961.94298012         0.00000000         31.43434139        0.00000000
A-IO                            0.00          0.00000000         0.00000000          0.00000000        0.00000000
M-1                    27,488,000.00        961.94298021         0.00000000         31.43434153        0.00000000
M-2                    22,490,000.00        961.94297999         0.00000000         31.43434149        0.00000000
B-1                     3,999,201.00        961.94298061         0.00000000         31.43434151        0.00000000
B-2                    10,995,000.00        961.94298045         0.00000000         31.43434106        0.00000000
R-1                             0.00          0.00000000         0.00000000          0.00000000        0.00000000
R-2                             0.00          0.00000000         0.00000000          0.00000000        0.00000000
R-3                             0.00          0.00000000         0.00000000          0.00000000        0.00000000
C                               0.00          0.00000000         0.00000000          0.00000000        0.00000000
P                             100.00       1000.00000000         0.00000000          0.00000000        0.00000000
<FN>

</FN>







                                      Principal Distribution Factors Statement (continued)

                                                Total                 Ending               Ending              Total
                         Realized           Principal            Certificate          Certificate          Principal
Class                    Loss (3)           Reduction                Balance           Percentage       Distribution

<s>            <c>                 <c>                 <c>                    <c>                 <c>
A-1                     0.00000000         31.43434139            930.50863872          0.93050864        31.43434139
A-IO                    0.00000000          0.00000000              0.00000000          0.00000000         0.00000000
M-1                     0.00000000         31.43434153            930.50863868          0.93050864        31.43434153
M-2                     0.00000000         31.43434149            930.50863851          0.93050864        31.43434149
B-1                     0.00000000         31.43434151            930.50863910          0.93050864        31.43434151
B-2                     0.00000000         31.43434106            930.50863847          0.93050864        31.43434106
R-1                     0.00000000          0.00000000              0.00000000          0.00000000         0.00000000
R-2                     0.00000000          0.00000000              0.00000000          0.00000000         0.00000000
R-3                     0.00000000          0.00000000              0.00000000          0.00000000         0.00000000
C                       0.00000000          0.00000000              0.00000000          0.00000000         0.00000000
P                       0.00000000          0.00000000          1,000.00000000          1.00000000         0.00000000
<FN>
(3) Amount Does Not Include Excess Special Hazard, Bankrupcy, or Fraud Losses
    Unless Otherwise Disclosed.
    Please Refer to the Prospectus Supplement for a Full Description.
</FN>









                                                 Interest Distribution Statement

                                                          Beginning                        Payment of
                      Original          Current        Certificate/            Current         Unpaid          Current
                          Face      Certificate            Notional            Accrued       Interest         Interest
Class                   Amount             Rate             Balance           Interest      Shortfall        Shortfall

<s>           <c>               <c>             <c>                 <c>                <c>             <c>
A-1               434,812,000.00        4.10300%     418,264,351.07        1,430,115.53           0.00             0.00
A-IO                        0.00        5.00000%      75,000,000.00          312,500.00           0.00             0.00
M-1                27,488,000.00        4.60600%      26,441,888.64          101,492.78           0.00             0.00
M-2                22,490,000.00        4.96800%      21,634,097.62           89,565.16           0.00             0.00
B-1                 3,999,201.00        5.66500%       3,847,003.33           18,161.06           0.00             0.00
B-2                10,995,000.00        4.57000%      10,576,563.07           38,936.44           0.00             0.00
R-1                         0.00        0.00000%               0.00                0.00           0.00             0.00
R-2                         0.00        0.00000%               0.00                0.00           0.00             0.00
R-3                         0.00        0.00000%               0.00                0.00           0.00             0.00
C                           0.00        0.00000%               0.00                0.00           0.00             0.00
P                         100.00        0.00000%             100.00                0.00           0.00             0.00
Totals            499,784,301.00                                           1,990,770.97           0.00             0.00

 
 

                                            Interest Distribution Statement (continued)

                                                                                      Remaining               Ending
                      Non-Supported                                    Total             Unpaid         Certificate/
                           Interest             Realized            Interest           Interest             Notional
          Class           Shortfall           Losses (4)        Distribution          Shortfall              Balance


 <s>            <c>                  <c>                 <c>                 <c>                 <c>
 A-1                            0.00                0.00         1,430,115.53                0.00     404,596,322.22
 A-IO                           0.00                0.00           312,500.00                0.00      75,000,000.00
 M-1                            0.00                0.00           101,492.78                0.00      25,577,821.46
 M-2                            0.00                0.00            89,565.16                0.00      20,927,139.28
 B-1                            0.00                0.00            18,161.06                0.00       3,721,291.08
 B-2                            0.00                0.00            38,936.44                0.00      10,230,942.48
 R-1                            0.00                0.00                 0.00                0.00               0.00
 R-2                            0.00                0.00                 0.00                0.00               0.00
 R-3                            0.00                0.00                 0.00                0.00               0.00
 C                              0.00                0.00                 0.00                0.00               0.00
 P                              0.00                0.00            15,254.27                0.00             100.00
 Totals                         0.00                0.00         2,006,025.24                0.00
 <FN>
 (4) Amount Does Not Include Excess Special Hazard, Bankrupcy, or Fraud Losses Unless Otherwise Disclosed.
     Please Refer to the Prospectus Supplement for a Full Description.

 </FN>
 



                                            Interest Distribution Factors Statement
                                                  Beginning                               Payment of
              Original            Current         Certificate/         Current            Unpaid           Current
              Face                Certificate     Notional             Accrued            Interest         Interest
Class (5)     Amount              Rate            Balance              Interest           Shortfall        Shortfall


<s>           <c>                 <c>             <c>                  <c>                <c>              <c>
A-1                 434,812,000.00        4.10300%         961.94298012        3.28904338        0.00000000        0.00000000
A-IO                          0.00        5.00000%        1000.00000000        4.16666667        0.00000000        0.00000000
M-1                  27,488,000.00        4.60600%         961.94298021        3.69225771        0.00000000        0.00000000
M-2                  22,490,000.00        4.96800%         961.94297999        3.98244375        0.00000000        0.00000000
B-1                   3,999,201.00        5.66500%         961.94298061        4.54117210        0.00000000        0.00000000
B-2                  10,995,000.00        4.57000%         961.94298045        3.54128604        0.00000000        0.00000000
R-1                           0.00        0.00000%           0.00000000        0.00000000        0.00000000        0.00000000
R-2                           0.00        0.00000%           0.00000000        0.00000000        0.00000000        0.00000000
R-3                           0.00        0.00000%           0.00000000        0.00000000        0.00000000        0.00000000
C                             0.00        0.00000%           0.00000000        0.00000000        0.00000000        0.00000000
P                           100.00        0.00000%        1000.00000000        0.00000000        0.00000000        0.00000000
<FN>
(5)  Per $1 denomination.


</FN>



                                       Interest Distribution Factors Statement (continued)

                                                                                Remaining               Ending
                   Non-Supported                                 Total             Unpaid         Certificate/
                        Interest          Realized            Interest           Interest             Notional
Class                  Shortfall        Losses (6)        Distribution          Shortfall              Balance


<s>           <c>               <c>               <c>                 <c>                 <c>
A-1                   0.00000000        0.00000000         3.28904338          0.00000000          930.50863872
A-IO                  0.00000000        0.00000000         4.16666667          0.00000000         1000.00000000
M-1                   0.00000000        0.00000000         3.69225771          0.00000000          930.50863868
M-2                   0.00000000        0.00000000         3.98244375          0.00000000          930.50863851
B-1                   0.00000000        0.00000000         4.54117210          0.00000000          930.50863910
B-2                   0.00000000        0.00000000         3.54128604          0.00000000          930.50863847
R-1                   0.00000000        0.00000000         0.00000000          0.00000000            0.00000000
R-2                   0.00000000        0.00000000         0.00000000          0.00000000            0.00000000
R-3                   0.00000000        0.00000000         0.00000000          0.00000000            0.00000000
C                     0.00000000        0.00000000         0.00000000          0.00000000            0.00000000
P                     0.00000000        0.00000000    152542.70000000          0.00000000         1000.00000000
<FN>
(6) Amount Does Not Include Excess Special Hazard, Bankrupcy,or Fraud Losses Unless
    Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.
</FN>







                                             CERTIFICATEHOLDER ACCOUNT STATEMENT

                                                      CERTIFICATE ACCOUNT

<s>                                                                                   <c>
Beginning Balance                                                                                        0.00
Deposits
    Payments of Interest and Principal                                                          17,792,648.58
    Liquidations, Insurance Proceeds, Reserve Funds                                                      0.00
    Proceeds from Repurchased Loans                                                                      0.00
    Other Amounts (Servicer Advances)                                                               64,888.74
    Realized Loss (Gains, Subsequent Expenses & Recoveries)                                              0.00
    Prepayment Penalties                                                                                 0.00
Total Deposits                                                                                  17,857,537.32

Withdrawals
    Reimbursement for Servicer Advances                                                             42,354.13
    Payment of Service Fee                                                                          98,770.74
    Payment of Interest and Principal                                                           17,716,412.45
Total Withdrawals (Pool Distribution Amount)                                                    17,857,537.32


Ending Balance                                                                                           0.00






                                            PREPAYMENT/CURTAILMENT INTEREST SHORTFALL
<s>                                                                                   <c>
Total Prepayment/Curtailment Interest Shortfall                                                      8,267.81

Servicing Fee Support                                                                                8,267.81
Non-Supported Prepayment/Curtailment Interest Shortfall                                                  0.00






                                                         SERVICING FEES


<s>                                                                                   <c>
Gross Servicing Fee                                                                                100,508.54
Master Servicing Fee                                                                                 4,020.35
Miscellaneous Fee                                                                                    2,509.66
Supported Prepayment/Curtailment Interest Shortfall                                                  8,267.81
Net Servicing Fee                                                                                   98,770.74






                                                         OTHER ACCOUNTS

                                                Beginning           Current           Current           Ending
Account Type                                      Balance       Withdrawals          Deposits          Balance


<s>                                    <c>                 <c>               <c>              <c>
Reserve Fund                                      5,000.00              0.00              0.00         5,000.00




                                                               LOAN STATUS STRATIFICATION/CREDIT ENHANCEMENT STATEMENT
                                                                        DELINQUENCY STATUS

         DELINQUENT             BANKRUPTCY             FORECLOSURE            REO                    Total

<s>        <c>                   <c>                    <c>                    <c>                     <c>

          No of Loans           No of Loans            No of Loans            No of Loans            No of Loans
          Principal Balance     Principal Balance      Principal Balance      Principal Balance      Principal Balance
0-29 Days                       0                      0                      0                      0
                                0.00                   0.00                   0.00                   0.00

30 Days   23                    0                      1                      0                      24
          6,938,264.97          0.00                   168,500.42             0.00                   7,106,765.39

60 Days   10                    0                      0                      0                      10
          2,212,138.04          0.00                   0.00                   0.00                   2,212,138.04

90 Days   1                     0                      0                      0                      1
          543,668.81            0.00                   0.00                   0.00                   543,668.81

120 Days  0                     0                      0                      0                      0
          0.00                  0.00                   0.00                   0.00                   0.00

150 Days  0                     0                      0                      0                      0
          0.00                  0.00                   0.00                   0.00                   0.00

180+ Days 0                     0                      0                      0                      0
          0.00                  0.00                   0.00                   0.00                   0.00

Totals    34                    0                      1                      0                      35
          9,694,071.82          0.00                   168,500.42             0.00                   9,862,572.24


          No of Loans           No of Loans            No of Loans            No of Loans            No of Loans
          Principal Balance     Principal Balance      Principal Balance      Principal Balance      Principal Balance
0-29 Days                       0.000000%              0.000000%              0.000000%              0.000000%
                                0.000000%              0.000000%              0.000000%              0.000000%

30 Days   1.284916%             0.000000%              0.055866%              0.000000%              1.340782%
          1.479583%             0.000000%              0.035933%              0.000000%              1.515515%

60 Days   0.558659%             0.000000%              0.000000%              0.000000%              0.558659%
          0.471738%             0.000000%              0.000000%              0.000000%              0.471738%

90 Days   0.055866%             0.000000%              0.000000%              0.000000%              0.055866%
          0.115937%             0.000000%              0.000000%              0.000000%              0.115937%

120 Days  0.000000%             0.000000%              0.000000%              0.000000%              0.000000%
          0.000000%             0.000000%              0.000000%              0.000000%              0.000000%

150 Days  0.000000%             0.000000%              0.000000%              0.000000%              0.000000%
          0.000000%             0.000000%              0.000000%              0.000000%              0.000000%

180+ Days 0.000000%             0.000000%              0.000000%              0.000000%              0.000000%
          0.000000%             0.000000%              0.000000%              0.000000%              0.000000%

Totals    1.899441%             0.000000%              0.055866%              0.000000%              1.955307%
          2.067257%             0.000000%              0.035933%              0.000000%              2.103190%





                                                       OTHER INFORMATION

<s>                                                                             <c>
Current Period Class A Insufficient Funds                                                            0.00
Principal Balance of Contaminated Properties                                                         0.00
Periodic Advance                                                                                64,888.74







 
 
                               COLLATERAL STATEMENT
                                                                        
 Collateral Description                                               Mixed Fixed

 Weighted Average Gross Coupon                                          7.251798%
 Weighted Average Net Coupon                                            7.001798%
 Weighted Average Pass-Through Rate                                     6.985555%
 Weighted Average Maturity(Stepdown Calculation )                             333
 Beginning Scheduled Collateral Loan Count                                  1,840

 Number Of Loans Paid In Full                                                  50
 Ending Scheduled Collateral Loan Count                                     1,790
 Beginning Scheduled Collateral Balance                            482,441,094.78
 Ending Scheduled Collateral Balance                               467,548,369.06
 Ending Actual Collateral Balance at 31-May-2003                   468,933,933.46
 Monthly P &I Constant                                               3,374,778.83
 Special Servicing Fee                                                       0.00
 Prepayment Penalties                                                        0.00
 Realized Loss Amount                                                        0.00
 Cumulative Realized Loss                                                    0.00
 Ending Scheduled Balance for Premium Loans                        467,548,369.06
 Scheduled Principal                                                   459,307.81
 Unscheduled Principal                                              14,433,417.91

 Required Overcollateralization Amount                                       0.00
 Overcollateralized Increase Amount                                    817,661.48
 Overcollateralized reduction Amount                                         0.00
 Specified O/C Amount                                                2,498,922.00
 Overcollateralized Amount                                           2,494,852.53
 Overcollateralized Deficiency Amount                                    4,069.47
 Base Overcollateralized Amount                                              0.00
 Extra principal distribution Amount                                   817,661.48
 Excess Cash Amount                                                    832,915.75
 
 
 
                                                    
 
   
   

              Miscellaneous Reporting
                                                         
   Three month rolling average                                 0.003572%