-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 Eryg5w0Exc9z65dcd+xQC1lg22J2P7aXlk8WaqCjTFnDeoEFGYTaxexlK/BqDlM6
 ErqwHE8A+2yOAQxOk25IVg==

<SEC-DOCUMENT>0000933405-05-000025.txt : 20050623
<SEC-HEADER>0000933405-05-000025.hdr.sgml : 20050623
<ACCEPTANCE-DATETIME>20050623111238
ACCESSION NUMBER:		0000933405-05-000025
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050621
FILED AS OF DATE:		20050623
DATE AS OF CHANGE:		20050623

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			COLAROSSI JOHN
		CENTRAL INDEX KEY:			0001256488

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-21803
		FILM NUMBER:		05911715

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		4178299435

	MAIL ADDRESS:	
		STREET 1:		C/O PROFORMANCE POWERTRAIN PRODUCTS
		STREET 2:		2720 AIRPORT COMMERCE AVENUE
		CITY:			SPRINGFIELD
		STATE:			MO
		ZIP:			65803

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AFTERMARKET TECHNOLOGY CORP
		CENTRAL INDEX KEY:			0000933405
		STANDARD INDUSTRIAL CLASSIFICATION:	MOTOR VEHICLE PARTS & ACCESSORIES [3714]
		IRS NUMBER:				954486486
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1400 OPUS PLACE
		STREET 2:		SUITE 600
		CITY:			DOWNERS GROVE
		STATE:			IL
		ZIP:			60515
		BUSINESS PHONE:		6302718100

	MAIL ADDRESS:	
		STREET 1:		1400 OPUS PLACE
		STREET 2:		SUITE 600
		CITY:			DOWNERS GROVE
		STATE:			IL
		ZIP:			60515
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-06-21</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000933405</issuerCik>
        <issuerName>AFTERMARKET TECHNOLOGY CORP</issuerName>
        <issuerTradingSymbol>ATAC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001256488</rptOwnerCik>
            <rptOwnerName>COLAROSSI JOHN</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O PROFORMANCE POWERTRAIN PRODUCTS</rptOwnerStreet1>
            <rptOwnerStreet2>2720 AIRPORT COMMERCE AVENUE</rptOwnerStreet2>
            <rptOwnerCity>SPRINGFIELD</rptOwnerCity>
            <rptOwnerState>MO</rptOwnerState>
            <rptOwnerZipCode>65803</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Pres., Independent Aftermarket</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2005-06-21</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1668</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>16.6012</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8749</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These shares are restricted.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/John Colarossi</signatureName>
        <signatureDate>2005-06-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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