Sierra Intake Manifold Gasket Set - Mercruiser - S18-4388. Replaces: 27-11977A88, A92 For: GM 262 CID Eng; 175, 185 & 205 HP, 4.3L Includes S18-3879 Head Gasket Part...

Sierra Intake Manifold Gasket Set - Mercruiser - S18-4389. Replaces: 27-47453A1 For: All GM 165 HP (S/N 270032 & UP) & Inline 6 cyl. 250 CID Part...

Sierra Intake Manifold Gasket Set - Mercruiser - S18-4384. For: GM 181 (3.0L) CID Eng; S/N 2508261-6229717 (Except 3.0LX) Part Number SRA-S18-4384

Sierra Intake Manifold Gasket Set - Mercruiser - S18-4408. Replaces: 27-11977, 27-11987 For: GM 262 CID Engines 175, 185 and 205 HP Part Number SRA-S18-4408

Sierra Exhaust Manifold Gasket Set - Mercruiser - S18-4396. Replaces: 27-46401A1 For: 250 (4.1L) CID Eng; 165 HP S/N 2770032 & UP Contains: Sierra CodeDescriptionO.E #Qty S18-283

Sierra Exhaust Manifold Gasket Set - Mercruiser - S18-4348 For: GM 454, 525 (7.4L & 8.2L) Contains: Sierra CodeDescriptionO.E #Qty S18-0418 Manifold to Cylinder Head...

Sierra Exhaust Manifold Gasket Set - Mercruiser - S18-4349 For: GM 200, 228, 230, 260, 898 (5.0 & 5.7L) Contains: Sierra CodeDescriptionO.E #Qty S18-2949 Exhaust Manifold...

Sierra Exhaust Manifold Gasket Set - Mercruiser - S18-4347-1. For: GM 175, 185, 205 (229 & 262 CID) Contains: Sierra CodeDescriptionO.E #Qty S18-0897 Exhaust Elbow Mounting...

Sierra Manifold - Mercruiser - S18-1953-2. Port & Starboard. Supplied with Mounting Package Replaces: Mercruiser 87114A19, 86024A10, 860246A15, 860246A3, 860246A7, 860246A9, 860336A2,...