Replacement Manifold for Mercruiser V8 Manifold Ford 302/351 with end riser for starboard side. Mercruiser part # 65603A4. Sierra part # 18-1962-1.Applications: Engine: 215 (Serial # 2781153 and up) - Engine 225/225S (Serial # 3385721 and up) - Engine 233 (Serial # 4173000 and up) - Engine 255 (Serial # 3258728 and up) and Engine 888 (Serial # 3108723 and up). | Mercruiser Manifold for V8 Ford 302/351 w/ End Riser, starboard side