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 or earliest event reported) July 20, 2004 AMPCO-PITTSBURGH CORPORATION (Exact name of registrant as specified in its charter) Pennsylvania 1-898 25-1117717 (State or other (Commission file number) (I.R.S. Employer jurisdiction Identification of incorporation) Number) 600 Grant Street Pittsburgh, PA 15219 (Address of principal (Zip Code) executive offices) Registrant's telephone number, including area code: (412) 456- 4400 Item 12. Disclosure of Results of Operations and Financial Condition. On July 20, 2004, Ampco-Pittsburgh Corporation issued a press release announcing its results for the three and six months ended June 30, 2004. A copy of the press release is attached hereto and is being furnished to the SEC. 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. AMPCO-PITTSBURGH CORPORATION Date: July 20, 2004 By: s/Ernest G. Siddons Ernest G. Siddons President