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 5, 2004

IMPCO TECHNOLOGIES, INC.

(Exact name of registrant as specified in its charter)

Delaware

(State or other jurisdiction of

incorporation or organization)

001-15143 (Commission File Number) 91-1039211 (I.R.S. Employer Identification No.)

16804 Gridley Place

Cerritos, California 90703

(Address of Principal Executive Offices) (ZIP Code)

(562) 860-6666

(Registrant’s telephone number, including area code)

INFORMATION TO BE INCLUDED IN THE REPORT

Item 5. Other Events

On May 5, 2004, IMPCO Technologies, Inc. (“Impco” or the “Registrant”) announced its first quarter 2004 financial results.

Impco announced its results in the press release attached as Exhibit 99.1.

Item 7. Financial Statements and Exhibits

(c) Exhibits

Exhibit Number	Description
99.1	Press Release, dated May 5, 2004.

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, hereunto duly authorized.

IMPCO TECHNOLOGIES, INC.

/s/    NICKOLAI A. GERDE         

Nickolai A. Gerde

Chief Financial Officer and Treasurer

DATE: May 5, 2004

INDEX TO EXHIBITS

Exhibit Number	Description
99.1	Press Release, dated May 5, 2004.