Exhibit 32.1 CEO Certification
OREILLY AUTOMOTIVE, INC. AND SUBSIDIARIES
OREILLY AUTOMOTIVE, INC.
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
In connection with the report of OReilly Automotive, Inc. (the Company) on Form 10-Q for the period ended March 31, 2010, as filed
with the Securities and Exchange Commission on the date hereof (the Report), I, Greg Henslee, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:
||The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and |
||The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.
/s/ Greg Henslee
Chief Executive Officer
(Principal Executive Officer)
May 7, 2010
The foregoing certification is being furnished as an exhibit to the Report pursuant to Item 601(b)(32) of Regulation S-K and Section 1350 of
Title 18 of the United States Code and, accordingly, is not being filed with the Securities and Exchange Commission (the Commission) as part of the Report and is not to be incorporated by reference into any filing of the Company with the
Commission, whether made before or after the date of the Report, irrespective of any general incorporation language contained in such filing.
A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to the Company and will be
retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.