The Sierra 18-7283 Fuel Pump fits GM V-8 (305 and 350 CID) engines. It is interchangeable with the following: Mallory 9-35423, Mercruiser 97401, 97401A2, 97401A8, 861678A1, 8M0058164, OMC 509404. Each component meets or exceeds the original part it replaces. Fit specific, check part numbers before purchase to ensure proper fit.