This Mercury 863444T1 HOUSING ASSY fits the following models and components: Mercruiser Manufactured Engines 5.7L 350 CID MPI Bravo 1G700000 THRU 1G799999 Water Distribution Housing Mercruiser Re-manufactured Engines 5.7l 350 CID MPI Alpha 1G400000 THRU 1G499999 Water Distribution Housing Mercruiser Re-manufactured Engines 5.7L 350 CID MPI Bravo 1G400000 THRU 1G499999 Water Distribution Housing Mercruiser Quicksilver Manufactured Engines 5.7L 350 CID MPI Alhpa 1G700000 THRU 1G799999 Water Distribution Housing Mercruiser Sterndrive Gas Engines 5.7L 350 CID V8 GM 5.7L 350 CID MAG MPI HORIZON 0M300000 THRU 0M599999 Water Distribution Housing Mercruiser Sterndrive Gas Engines 6.2L 377 CID V8 GM 6.2L 377 CID MAG MPI BRAVO EC 1A343300 THRU 1A611927 Water Distribution Housing Mercruiser Sterndrive Gas Engines 4.3L 262 CID V6 GM 4.3L MPI 262 CID V-6 0W650000 THRU 0W658582 Water Distribution Housing Mercruiser Sterndrive Gas Engines 5.0L 305 CID V8 GM 5.0L MPI 305 CID V-8 0W310000 THRU 0W649999 Water Distribution Housing Mercruiser Sterndrive Gas Engines 5.7L 350 CID V8 GM 5.7L 350 CID MAG MPI 0W650000 THRU 1A299999 Water Distribution Housing Mercruiser Sterndrive Gas Engines 5.0L 305 CID V8 GM 5.0L MPI 305 CID V-8 1A611928 THRU 1A623184 Water Distribution Housing Mercruiser Sterndrive Gas Engines 4.3L 262 CID V6 GM 4.3L MPI 262 CID V-6 0M300000 THRU 0M614999 Water Distribution Housing Mercruiser Sterndrive Gas Engines 4.3L 262 CID V6 GM 4.3L MPI 262 CID V-6 0W658584 THRU 1A030367 Water Distribution Housing Mercruiser Sterndrive Gas Engines 5.7L 350 CID V8 GM 5.7L 350 CID MAG MPI 0W060000 THRU 0W309999 Water Distribution Housing Mercruiser Sterndrive Gas Engines 4.3L 262 CID V6 GM 4.3L MPI 262 CID V-6 0W658583 THRU 0W658583 Water Distribution Housing Mercruiser Sterndrive Gas Engines 6.2L 377 CID V8 GM 6.2L 377 CID MPI MX 0W310000 THRU 0W649999 Water Distribu