8-K

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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): August 16, 2004

STEWART & STEVENSON SERVICES, INC.
(Exact name of registrant as specified in its charter)

Texas
(State or other jurisdiction
of incorporation) 0-8493
(Commission File Number) 74-1051605
(I.R.S. Employer
Identification No.)

2707 North Loop West
Houston, Texas
(Address of principal executive offices)
77008
(Zip code)

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

Item 7. Exhibits.

Exhibit 99.1 Company Press Release dated August 16 2004, titled "Stewart & Stevenson Announces Fiscal 2004 Second Quarter Earnings Release and Conference Call Schedule".

Item 9. Regulation FD Disclosure.

On August 16, 2004, Stewart & Stevenson Services, Inc. (the "Company") issued the press release attached hereto as Exhibit 99.1.

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: August 16, 2004	By:	/s/  JOHN B. SIMMONS
	Name:	John B. Simmons
	Title:	Vice President and Chief Financial Officer

EXHIBIT INDEX

99.1

Company Press Release dated August 16, 2004, titled "Stewart & Stevenson Announces Fiscal 2004 Second Quarter Earnings Release and Conference Call Schedule".

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Item 7. Exhibits.
Item 9. Regulation FD Disclosure.

SIGNATURES
EXHIBIT INDEX

EX-99.1

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EXHIBIT 99.1

[LOGO]	Press Release
	Contact:	John Simmons, VP & CFO Stewart & Stevenson Services, Inc. 713-868-7700
For Immediate Release

STEWART & STEVENSON ANNOUNCES FISCAL 2004 SECOND
QUARTER EARNINGS RELEASE AND CONFERENCE CALL SCHEDULE

HOUSTON—August 16, 2004—Stewart & Stevenson Services, Inc. (NYSE: SVC), today announced plans to release its fiscal 2004 second quarter results on Wednesday, August 25 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 Wednesday, August 25, 2004 at 10:00 a.m. Eastern time.

What:	Stewart & Stevenson Second Quarter Earnings Call
When:	Wednesday, August 25 at 10:00 Eastern time
How:	Live via phone—By dialing 800-659-1966 or 617-614-2711 and using pass code 80041855 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 under the heading "In the Spotlight", or on the Investor Relations web page.

A telephonic replay of the conference call will be available through September 1, 2004 and may be accessed by dialing 888-286-8010 or 617-801-6888 and using pass code 48720311. 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, airline, marine, petroleum and transportation. For more information on Stewart & Stevenson visit www.ssss.com.

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EXHIBIT 99.1

STEWART & STEVENSON ANNOUNCES FISCAL 2004 SECOND QUARTER EARNINGS RELEASE AND CONFERENCE CALL SCHEDULE