Replacement manifold for Mercruiser V8 Manifold Ford 302/351 with end riser for port side. Mercruiser Part # 65604A4.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) Engine 888 (Serial # 3108723 and up)