912442 Manifold Exhaust Marine Port for OMC GM V8 Top Rear Riser Port Side Log Style Manifold for an OMC. It will fit a small block GM from 1978 to about 1988. If you have an OMC GM engine with the riser on the top rear then this is the correct manifold for your application.

Replaces

• OMC #s: 910144, 909279, 912442;
• Barr # OMC-1-912442;
• GLM # 51420;
• Sierra # 18-1903;
• Mallory # 9-40601
• OEM: 912442

Manifolds come with gaskets

Cross Reference Component Part Numbers

• OMC Starboard Manifold: 909280, 912441, Port Manifold: 910144, 909279, 912442, Riser: 909863
• Osco Starboard Manifold: 2441, Port Manifold: 2442, Riser: 9863-T
• Barr Starboard Manifold: OMC-1-912441, Port Manifold: OMC-1-912442, Riser: OMC-20-982680
• GLM Starboard Manifold: 51410, Port Manifold: 51420, Riser: 51320
• Sierra Starboard Manifold: 18-1902, Port Manifold: 18-1903, Riser: 18-1921
• Mallory Starboard Manifold: 9-40602 Port Manifold: 9-40601 Riser: 9-40610