Mercruiser Ford Small Block Exhaust Manifold | Barr Marine MC-1-65604 Port side log style manifold fits Mercruiser 188, 215, 225, 233, 255, & 888 model marine engines. Barr Mercruiser exhaust manifold Direct replacement Mercruiser Ford small block log style exhaust manifold Port side For Mercruiser Ford 302 and 351 cu. in. 188, 215, 225, 233, 255 and 888 models Includes gaskets and mounting hardware Heavy duty cast iron Painted black Replaces Mercury 65604A12 Replaces Osco 5604 Replaces Mercruiser 54100A5, 54100A1, 65604A4, and 65604A12