8-K

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):  May 17, 2005

STEWART & STEVENSON SERVICES, INC.

(Exact name of registrant as specified in its charter)

Texas	0-8493	74-1051605
(State or other jurisdiction of incorporation)	(Commission File Number)	(I.R.S. Employer  Identification No.)
2707 North Loop West
Houston, Texas		77008
(Address of principal executive offices)		(Zip code)

Registrant’s telephone number, including area code:  (713) 868-7700

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

oWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

oSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

oPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 7.01.	Regulation FD Disclosure.
On May 17, 2005, Stewart & Stevenson Services, Inc. (the “Company”) issued the press release attached hereto as Exhibit 99.1.
Item 9.01.		Financial Statements and Exhibits.
Exhibit 99.1		Company Press Release dated May 17, 2005, titled “Stewart & Stevenson Announces Fiscal
2005 First Quarter Earnings Release and Conference Call Schedule”.

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SIGNATURES

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 hereto duly authorized.

	STEWART & STEVENSON SERVICES, INC.
Date: May 17, 2005	By:	/s/ John B. Simmons
	Name:	John B. Simmons
	Title:	Senior Vice President, Chief Financial Officer
		and Treasurer
.

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EXHIBIT INDEX

99.1         Company Press Release dated May 17, 2005, titled “Stewart & Stevenson Announces Fiscal 2005 First Quarter Earnings Release and Conference Call Schedule”.

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EX-99.1

EXHIBIT 99.1

STEWART & STEVENSON ANNOUNCES

FISCAL 2005 FIRST QUARTER EARNINGS RELEASE AND

CONFERENCE CALL SCHEDULE

HOUSTON —May 17, 2005— Stewart & Stevenson Services, Inc. (NYSE: SVC), today announced plans to release its fiscal 2005 first quarter results on Thursday, May 26, 2005 at 6:00 a.m. Eastern time.  In conjunction with the release, Stewart & Stevenson has scheduled a conference call, which will be broadcast live over the Internet, on Thursday, May 26, 2005 at 10:00 a.m. Eastern time.

What:	Stewart & Stevenson First Quarter Earnings Call
When:	Thursday, May 26, 2005 at 10:00 a.m. Eastern time
How:	Live via phone - By dialing 888-396-2384 or 617-847-8711 and
	using pass code 44803382 at least 10 minutes prior to the start time —
	OR live over the Internet by logging on to the web address below:
Where:	http://www.ssss.com
	The call may be accessed on the home page of Stewart & Stevenson’s website on the Investor Relations page.

A telephonic replay of the conference call will be available through June 2, 2005 and may be accessed by dialing 888-286-8010 or 617-801-6888 and using pass code 58636622. An audio archive will also be available on the Stewart & Stevenson website at www.ssss.com (on the home page under the heading “In the Spotlight” or on the Investor Relations page) shortly after the call and will be accessible for approximately 12 months on the Investor Relations page.

Stewart & Stevenson Services, Inc., founded in 1902, is a billion-dollar company that manufactures, distributes and provides service for a wide range of industrial products and diesel-powered equipment to key industries worldwide, including power generation, defense, marine, petroleum and transportation.  For more information on Stewart & Stevenson visit www.ssss.com.

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