<SUBMISSION>
<ACCESSION-NUMBER>0001209191-08-042403
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20080711
<FILING-DATE>20080714
<DATE-OF-FILING-DATE-CHANGE>20080714
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>CSK AUTO CORP
<CIK>0001051848
<ASSIGNED-SIC>5531
<IRS-NUMBER>860765798
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>645 E MISSOURI AVENUE
<CITY>PHOENIX
<STATE>AZ
<ZIP>85012
<PHONE>6022659200
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>645 E MISSOURI AVENUE
<CITY>PHOENIX
<STATE>AZ
<ZIP>85012
</MAIL-ADDRESS>
</ISSUER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>PHILIPPIN CHARLES J
<CIK>0001194717
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-13927
<FILM-NUMBER>08951387
</FILING-VALUES>
<BUSINESS-ADDRESS>
<PHONE>203-368-6044
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>C/O COMPETITIVE TECHNOLOGIES, INC.
<STREET2>777 COMMERCE DRIVE, SUITE 100
<CITY>FAIRFIELD
<STATE>CT
<ZIP>06825
</MAIL-ADDRESS>
</REPORTING-OWNER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
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    <footnotes>
        <footnote id="F1">Shares of CSK common stock exchanged for O'Reilly Automotive, Inc. (&quot;O'Reilly&quot;) common stock pursuant to an Agreement and Plan of Merger dated April 1, 2008 (&quot;Merger Agreement&quot;) between the Company, O'Reilly and OC Acquisition Company, an indirect wholly-owned subsidiary of O'Reilly (0.4285 shares of O'Reilly common stock and $1.00 in cash for each share of CSK common stock), resulting in a market value of $10.7569 per share of the Company's common stock on the effective date of the merger.</footnote>
        <footnote id="F2">Upon the change in control of the Company, all unvested stock options held by the reporting person automatically vested, including the stock options from this grant.</footnote>
        <footnote id="F3">Pursuant to the Merger Agreement, each outstanding option to purchase CSK common stock was converted to an option to purchase O'Reilly common stock on substantially the same terms, except that the number of options was adjusted as prescribed by the formula set forth in the Merger Agreement, by multiplying the number of CSK options by 0.4724 and the exercise price was adjusted by dividing the CSK exercise price by 0.4724.</footnote>
        <footnote id="F4">This option grant is fully vested.</footnote>
    </footnotes>

    <remarks>Executed pursuant to that certain Limited Power of Attorney for Section 16 Reporting Obligations, dated November 14, 2005.</remarks>

    <ownerSignature>
        <signatureName>Charles J. Philippin

by /s/ James R. Todd
Attorney In Fact</signatureName>
        <signatureDate>2008-07-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
