<PAGE>

                                                                   EXHIBIT 10.57

                              CONSENT AND AMENDMENT

                  CONSENT AND AMENDMENT, dated as of August 25, 1999 (this
"AMENDMENT"), to the Amended and Restated Credit Agreement, dated as of March 6,
1998 (as amended, supplemented or otherwise modified from time to time, the
"AGREEMENT"), among AFTERMARKET TECHNOLOGY CORP., a Delaware corporation (the
"BORROWER"), the several banks and other financial institutions from time to
time parties thereto (the "LENDERS") and THE CHASE MANHATTAN BANK, a New York
banking corporation, as agent (in such capacity, the "AGENT").

                              W I T N E S S E T H:

                  WHEREAS, the Borrower, the Lenders and the Agent are parties
to the Agreement;

                  WHEREAS, the Borrower intends to acquire substantially all of
the assets of All Transmission Parts, Inc. and All Automatic Transmission Parts,
Inc. for approximately $40,000,000 (the "ALL TRANS ACQUISITION");

                  WHEREAS, the Borrower has requested that the Lenders approve
the amount of the Acquisition pursuant to subsection 8.10(j)(v) and agree to
amend certain provisions of the Agreement, and the Lenders and the Agent are
agreeable to such request upon the terms and subject to the conditions set forth
herein;

                  NOW, THEREFORE, in consideration of the premises and mutual
agreements contained herein, and for other valuable consideration the receipt of
which is hereby acknowledged, the Company, the Lenders and the Agent hereby
agree as follows:

                  . DEFINITIONS. All terms defined in the Agreement shall have
such defined meanings when used herein unless otherwise defined herein.

                  . CONSENT TO ALL TRANS ACQUISITION. Pursuant to clause (v) of
Section 8.10(j), the Required Lenders hereby consent to the All Trans
Acquisition to the extent it would otherwise exceed the limitations thereof, so
long as the other requirements in respect thereof are satisfied, it being
understood that the aggregate consideration paid in connection with the All
Trans Acquisition shall be applied against and reduce the availability of the
$55,000,000 limit under subsection 8.10(j)(vi) (as such subsection is amended by
this Amendment).

                  . AMENDMENT OF SUBSECTION 1.1. Subsection 1.1 of the Agreement
is hereby amended by adding the following new definitions in alphabetical order:

<PAGE>


                  "NEW LENDER": as defined in subsection 2.7(d).

                  "NEW LENDER SUPPLEMENT": as defined in subsection 2.7(d).

                           . AMENDMENT OF SECTION 2. The Agreement is hereby
amended by adding the following new subsection 2.7 to the end of Section 2:

         "2.7 INCREASE IN REVOLVING CREDIT COMMITMENTS OR TERM LOANS. (a) The
      Borrower may, with notice to the Agent but without the consent of the
      Required Lenders, (a) from time to time during the Revolving Credit
      Commitment Period, request that the Revolving Credit Commitments be
      increased, or (b) from time to time prior to the Termination Date, request
      to borrow additional Term Loans; PROVIDED that the sum of incremental
      Revolving Credit Commitments and additional Term Loans obtained pursuant
      to this subsection shall not exceed $10,000,000 and shall, in each case,
      aggregate at least $2,000,000 per requested increase; and PROVIDED FURTHER
      that any request made by the Borrower pursuant to this subsection 2.7(a)
      shall be accompanied by documentation complying with the provisions of
      subsection 6.2(e) and additional written evidence to the extent necessary
      to demonstrate that after giving effect to the additional Term Loans or
      the Revolving Loans available to the Borrower pursuant to the increased
      Revolving Credit Commitments, the Borrower would be in compliance with
      subsection 8.17 hereof. Upon receipt of such notice, the Administrative
      Agent will seek the agreement of one or more Lenders (including New
      Lenders) to increase or, in the case of New Lenders, make, its or their
      Revolving Credit Commitment or make additional Term Loans, as applicable,
      in an aggregate amount equal to the amount so requested by the Borrower.

         (b) If one or more of the Lenders (including New lenders) shall have
      agreed to increase its or their existing Revolving Credit Commitment or,
      in the case of New Lenders, agree to a Revolving Credit Commitment, or to
      make a Term Loan, in each case pursuant to a request made as described in
      the foregoing clause (a) (it being understood that no Lender shall have
      any obligation to increase its Revolving Credit Commitment or make such
      additional Term Loan), such increases in Revolving Credit Commitments
      shall become effective, and such Term Loans shall be made available to the
      Borrower, on a date mutually agreed upon among the Agent, the Borrower and
      the Lenders providing such increase and/or such new Revolving Credit
      Commitments or Term Loans and shall be implemented pursuant to
      documentation consistent herewith and otherwise in form and substance
      reasonably satisfactory to the Agent, providing, among other things, for
      adjustments to cause the Loans of each Lender to correspond to their
      respective percentage of the applicable facility after giving effect to
      such increase (including, without limitation, by providing for prepaying
      and reborrowing all then outstanding Loans).

         (c) Revolving Credit Loans, Revolving Credit Commitments and Term Loans
      made or agreed to pursuant to this subsection 2.7 shall have the same
      maturities, interest and fee rates and other terms as the other Revolving
      Credit Loans, Revolving Credit Commitments and/or Term Loans hereunder, as
      applicable, and shall for all purposes be

<PAGE>



         deemed to be Revolving Credit Loans, Revolving Credit Commitments
         and/or Term Loans hereunder, as the case may be.

         (d) Any bank, financial institution or other entity which, with the
      consent of the Borrower and the Agent (which consent shall not be
      unreasonably withheld), elects to become a "Lender" under this Agreement
      pursuant to this subsection 2.7 shall execute a New Lender Supplement
      (each, a "NEW LENDER SUPPLEMENT") substantially in the form of Exhibit H,
      whereupon such bank, financial institution or other entity (a "NEW
      LENDER") shall become a Revolving Credit Lender or Term Loan Lender, as
      the case may be, for all purposes and to the same extent as if originally
      a party hereto and shall be bound by and entitled to the benefits of this
      Agreement."

                  . AMENDMENT OF SUBSECTION 4.3. Subsection 4.3 is hereby
amended by inserting the new clause (e) after existing clause (d):

         "(e) If additional Term Loans are borrowed pursuant to subsection
      2.7(c), the remaining scheduled installments in effect on the date such
      additional Term Loans are borrowed shall be increased ratably (determined
      on the basis of the respective amounts of such remaining installments)."

                  . AMENDMENT OF SUBSECTION 8.1(A). Subsection 8.1(a) of the
Agreement is hereby amended by deleting the permitted maximum Leverage Ratios
listed therein for the last day of the Borrower's fiscal quarters ending
December 31, 1999 and March 31, 2000 and inserting in lieu thereof the following
permitted maximum Leverage Ratios:

                    "December 31, 1999                  4.25 to 1.0
                     March 31, 2000                     3.75 to 1.0".

                  . AMENDMENT OF SUBSECTION 8.1(B). Subsection 8.1(b) of the
Agreement is hereby amended by deleting the minimum permitted interest coverage
ratio listed therein for the Borrower's four consecutive fiscal quarters ending
March 31, 2000 and inserting in lieu thereof the following interest coverage
ratio:

                    "March 31, 2000                    2.25 to 1.0".

                  . AMENDMENT OF SUBSECTION 8.7. Subsection 8.7 of the Agreement
is hereby amended by deleting the existing subsection 8.7 and inserting in lieu
thereof the following new subsection:

         "8.7 LIMITATION ON LEASES. Permit Consolidated Lease Expense for any
      fiscal year of the Borrower to exceed an amount equal to $11,000,000 for
      the fiscal year ending December 31, 1998, $17,000,000 for the fiscal year
      ending December 31, 1999 and $21,000,000 for each fiscal year thereafter."

<PAGE>


                  . AMENDMENT OF SUBSECTION 8.10(J). Subsection 8.10(j) of the
Agreement is hereby amended by deleting "$25,000,000" from clause (vi) and
inserting in lieu thereof "$55,000,000" such that subsection 8.10(j), as
amended, reads as follows:

         "(j) acquisitions by the Borrower and its Subsidiaries, of assets or
      Capital Stock of one or more corporations or other Persons so long as (i)
      each such acquisition and all transactions related thereto shall be
      consummated in accordance with applicable Requirements of Law; (ii) each
      such acquisition, in the case of an acquisition of Capital Stock, shall
      result in such corporation or Person becoming a Subsidiary; (iii) after
      giving effect to any such acquisition, no Default or Event of Default
      shall have occurred and be continuing; (iv) the Borrower shall have
      delivered to the Agent a certificate demonstrating that the requirements
      of subsection 8.1 would be satisfied on a pro forma basis as at the end of
      the most recently ended fiscal quarter of the Borrower with respect to
      which financial statements have been delivered pursuant to subsection 7.1
      if each such acquisition (including the Indebtedness incurred in
      connection therewith) had occurred on the first day of the four fiscal
      quarter period ended with such most recently ended fiscal quarter; (v) in
      the case of any acquisition by the Borrower and its Subsidiaries, for cash
      or other consideration exceeding $15,000,000 in the aggregate, such
      acquisition shall be subject to the prior written consent of the Required
      Lenders; and (vi) the aggregate consideration for all such acquisitions
      after the Closing Date shall not exceed $55,000,000."

                  . ADDITION OF EXHIBIT H. The Agreement is hereby amended by
inserting Exhibit H hereto after existing Exhibit G.

                  . REPRESENTATIONS; NO DEFAULT. On and as of the date hereof,
and after giving effect to this Amendment, the Company confirms, reaffirms and
restates that the representations and warranties set forth in Section 5 of the
Agreement and in the other Loan Documents are true and correct in all material
respects, provided that the references to the Agreement therein shall be deemed
to be references to this Amendment and to the Agreement as amended by this
Amendment.

                  . CONDITIONS TO EFFECTIVENESS. This Amendment shall become
effective on and as of the date that the Agent shall have received:

                  () counterparts of this Amendment, duly executed and delivered
by a duly authorized officer of each of the Borrower, the Agent, and the
Required Lenders, along with the written consent of each Subsidiary Guarantor in
the form attached hereto;

                  () an executed certificate of an officer of the Borrower in
form satisfactory to the Agent as to the accuracy of the Borrower's
representations and warranties set forth in Section 5 of the Agreement and in
the other Loan Documents, the absence of any Default or Event of Default after
giving effect to this Amendment and as to such other customary matters as the
Agent may reasonably request; and

<PAGE>


                  () an amendment fee for the account of each Lender executing
this Amendment and delivering its executed signature page to the Agent prior to
12:00 Noon, New York City time, on August 25, 1999, in the amount equal to 0.10%
of the sum of such Lender's Aggregate Outstanding Extensions of Credit and its
unutilized Commitments as of such date.

                  . LIMITED CONSENT AND AMENDMENT. Except as expressly amended
herein, the Agreement shall continue to be, and shall remain, in full force and
effect. This Amendment shall not be deemed to be a waiver of, or consent to, or
a modification or amendment of, any other term or condition of the Agreement or
any other Loan Document or to prejudice any other right or rights which the
Lenders may now have or may have in the future under or in connection with the
Agreement or any of the instruments or agreements referred to therein, as the
same may be amended from time to time.

                  . COSTS AND EXPENSES. The Company agrees to pay or reimburse
the Agent for all its reasonable and customary out-of-pocket costs and expenses
incurred in connection with the preparation, negotiation and execution of this
Amendment, and the consummation of the transactions contemplated hereby,
including, without limitation, the reasonable fees and disbursements of its
counsel.

                  . COUNTERPARTS. This Amendment may be executed by one or more
of the parties hereto in any number of separate counterparts and all of said
counterparts taken together shall be deemed to constitute one and the same
instrument.

                  . GOVERNING LAW. THIS AMENDMENT SHALL BE GOVERNED BY, AND
CONSTRUED AND INTERPRETED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.


<PAGE>


                  IN WITNESS WHEREOF, the parties hereto have caused this
Amendment to be executed and delivered by their respective duly authorized
officers as of the date first above written.

                                    AFTERMARKET TECHNOLOGY CORP.

                                    By:
                                       --------------------------
                                    Name:
                                    Title:

                                    THE CHASE MANHATTAN BANK, as
                                    Agent and as a Lender

                                    By:
                                      ---------------------------
                                    Name:
                                    Title:

                                    BANK OF AMERICA NATIONAL
                                    TRUST AND SAVINGS
                                    ASSOCIATION

                                    By:
                                       ---------------------------
                                    Name:
                                    Title:

                                    BANK OF NOVA SCOTIA

                                    By:
                                       ---------------------------
                                    Name:
                                    Title:



<PAGE>


                                    THE FIRST NATIONAL BANK OF CHICAGO

                                    By:
                                      ----------------------------------
                                    Name:
                                    Title:

                                    FIRST UNION NATIONAL BANK

                                    By:
                                      ----------------------------------
                                    Name:
                                    Title:

                                    HARRIS TRUST & SAVINGS

                                    By:
                                      ----------------------------------
                                    Name:
                                    Title:

                                    LASALLE NATIONAL BANK

                                    By:
                                      ----------------------------------
                                    Name:
                                    Title:

                                    NATIONAL CITY BANK

                                    By:
                                      ----------------------------------
                                    Name:
                                    Title:


<PAGE>


                                    BANK OF NEW YORK

                                    By:
                                       --------------------------------
                                    Name:
                                    Title:

                                    CREDIT AGRICOLE INDOSUEZ

                                    By:
                                      ---------------------------------
                                    Name:
                                    Title:


<PAGE>


                                     CONSENT

          Each of the undersigned Guarantors hereby consents and agrees to the
provisions of the foregoing Amendment, and hereby affirms that upon the
effectiveness of the foregoing Amendment, each Loan Document to which it is a
party shall continue to be, and shall remain, in full force and effect.

                                     AFTERMARKET TECHNOLOGY CORP.

                                     By:
                                       ---------------------------------
                                     Name:
                                     Title:


                                     AARON'S AUTOMOTIVE PRODUCTS, INC.

                                     By:
                                       ---------------------------------
                                     Name:
                                     Title:


                                     ACI ELECTRONICS HOLDING CORP.

                                     By:
                                        ---------------------------------
                                     Name:
                                     Title:


                                     ACI ELECTRONICS INVESTMENT CORP.

                                     By:
                                        ---------------------------------
                                     Name:
                                     Title:



                                     ATC ELECTRONICS & LOGISTICS, L.P.

                                     By: ACI ELECTRONICS HOLDING CORP.,
                                     its General Partner

                                     By:
                                        ---------------------------------
                                     Name:
                                     Title:


<PAGE>


                                     ATC DISTRIBUTION GROUP, INC.

                                     By:
                                        ---------------------------------
                                     Name:
                                     Title:

                                     ATS REMANUFACTURING, INC.

                                     By:
                                        ---------------------------------
                                     Name:
                                     Title:


                                     COMPONENT REMANUFACTURING SPECIALISTS, INC.

                                     By:
                                        ---------------------------------
                                     Name:
                                     Title:

                                     AUTOCRAFT REMANUFACTURING CORP.

                                     By:
                                        ---------------------------------
                                     Name:
                                     Title:

                                     AUTOCRAFT INDUSTRIES, INC.

                                     By:
                                        ---------------------------------
                                     Name:
                                     Title:



<PAGE>


EXHIBIT H

                          FORM OF NEW LENDER SUPPLEMENT

                  SUPPLEMENT, dated _________________, to the Amended and
Restated Credit Agreement, dated as of March 6, 1998 (as amended, supplemented
or otherwise modified from time to time, the "AGREEMENT"), among AFTERMARKET
TECHNOLOGY CORP., a Delaware corporation (the "BORROWER"), the several banks and
other financial institutions from time to time parties thereto (the "LENDERS")
and THE CHASE MANHATTAN BANK, a New York banking corporation, as agent (in such
capacity, the "AGENT"). Capitalized terms used herein that are not defined
herein shall have the meanings ascribed to them in the Agreement.

                              W I T N E S S E T H :

                   WHEREAS, subsection 2.7(d) of the Agreement provides that any
bank, financial institution or other entity may become a party to the Agreement
with the consent of the Borrower and the Agent (which consent shall not be
unreasonably withheld) by executing and delivering to the Borrower and the Agent
a supplement to the Agreement in substantially the form of this Supplement; and

                  WHEREAS, the undersigned now desires to become a party to the
Agreement as a [Revolving Credit Lender] [Term Loan Lender];

                  NOW, THEREFORE, the undersigned hereby agrees as follows:

                  1. The undersigned agrees to be bound by the provisions of the
         Agreement, and agrees that it shall, on the date this Supplement is
         accepted by the Borrower and the Agent, become a [Revolving Credit
         Lender] [Term Loan Lender] for all purposes of the Agreement to the
         same extent as if originally a party thereto, with a [Revolving Credit
         Commitment] [Term Loan] of $__________________.

                  2. The undersigned (a) represents and warrants that it is
         legally authorized to enter into this Supplement; (b) confirms that it
         has received a copy of the Agreement and all amendments thereto,
         together with copies of the most recent available audited and unaudited
         financial statements delivered pursuant thereto and such other
         documents and information as it has deemed appropriate to make its own
         credit analysis and decision to enter into this Supplement; (c) agrees
         that it will, independently and without reliance the Agent or any other
         Lender and based on such documents and information as it shall deem
         appropriate at the time, continue to make its own credit decisions in
         taking or not taking action under the Agreement, the other Loan
         Documents or any other instrument or document furnished pursuant hereto
         or thereto; (d) appoints and authorizes the Agent to take such action
         as agent on its behalf and to exercise such powers and discretion under
         the Agreement, the other Loan Documents or any other instrument or
         document furnished pursuant hereto or thereto

<PAGE>


         as are delegated to the Agent by the terms thereof, together with such
         powers as are incidental thereto; and (e) agrees that it will be bound
         by the provisions of the Agreement and will perform in accordance with
         its terms all the obligations which by the terms of the Agreement are
         required to be performed by it as a Lender including, if it is
         organized under the laws of a jurisdiction outside the United States,
         its obligation pursuant to subsection 4.13(b) of the Agreement.

                  3. The undersigned's address for notices for the purposes of
the Agreement is as follows:

                  IN WITNESS WHEREOF, the undersigned has caused this Supplement
to be executed and delivered by a duly authorized officer on the date first
above written.

                                               [INSERT NAME OF NEW LENDER]

                                               By
                                                 --------------------------
                                                 Title:

Accepted this       day of
             ------

--------------, ----.

AFTERMARKET TECHNOLOGY CORP.

By
  -------------------------
   Title:


Accepted this     day of
             -----

--------------, ----.

THE CHASE MANHATTAN BANK,
as Agent

By
  ----------------------
  Title: