The Exhaust Manifold Gasket - Sierra Marine Engine Parts - 18-2949-9 (118-2949-9) is made with prime materials that are non-corrosive and can withstand a harsh marine environment. It is made by Sierra product that meets or exceeds the original equipment part it replaces. The Exhaust Manifold Gasket - Sierra Marine Engine Parts - 18-2949-9 (118-2949-9) is ideally fits to MCM/MIE GM V-8 (283, 305, 350 & 377 cid) engines. It is replaceable with 856116-9, 47-29499, 47-2949-9, 47-2949, CHV-47-000, 808282164355, 18-2949, and 96306. Key Features: It is replaceable with 856116-9, 47-29499, 47-2949-9, 47-2949, CHV-47-000, 808282164355, 18-2949, and 96306 It is made by Sierra product that meets or exceeds the original equipment part it replaces It is for MCM/MIE GM V-8 (283, 305, 350 & 377 cid) engines It is made with prime materials that are non-corrosive and can withstand a harsh marine environment Specifications: Brand: Sea Star Solutions SKU: 18-2949-9 UPC: 808282164355 Weight: 0.29 LBS Alternate Products SKU: "33395-PK", "REC27-33395", "27-00099-HD" Manufacturer Part Number (MPN): 118-2949-9 Fits: MCM/MIE GM V-8 (283, 305, 350 & 377 cid) engines