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 or earliest event reported) September 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 8.01. Other Events. On September 20, 2004, Ampco-Pittsburgh Corporation issued a press release announcing that its Union Electric Steel facility was damaged by the flooding caused by Hurricane Ivan. 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: September 20, 2004 By: s/Ernest G. Siddons Ernest G. Siddons President