Motors & Parts - Inboard & Outboard

Sierra Head Gasket - Mercruiser - S18-3877. Replaces: 914849 For: GM 454 (7.4L) CID Eng. Part Number SRA-S18-3877

Sierra Head Gasket - Mercruiser - S18-3887. Replaces: 915325 For: (7.4L) 454 CID GEN V Part Number SRA-S18-3887

Sierra Timing Cover Seals - Mercruiser - S18-1213. Replaces: 26-97335, 26-11973, 26-42750, 26-54799 Part Number SRA-S18-1213

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 Short Block Gasket Set - Mercruiser - S18-1271. Contains: Sierra CodeDescription S18-0466 Oil Pan Gasket S18-1213 Forward Crankshaft Seals S18-1211 Rear Crankshaft Seals S18-0328 Push Rod Cover S18-0327 Water Pump...

Sierra Head Gasket Set - Mercruiser - S18-1275. Contains: Sierra CodeDescription S18-3879 Head Gasket S18-0994 2BBL Carb Mounting Gasket S18-0463 4BBL Carb Mounting Gasket S18-4408 Intake Manifold Gasket S18-0311 Valve...

Sierra Head Gasket Set - Mercruiser - S18-1277. Contains: Sierra CodeDescription S18-0158 Intake Gasket S18-2848 Quadrajet Gasket NSS Valve Grind Cover Gasket S18-3878 Head Gasket S18-0956-1 Exhaust Manifold Mounting...

Sierra Timing Chain Gasket Set - Mercruiser - S18-1261 Contains: Sierra CodeDescription S18-0905 Oil Drain Screw Gasket S18-1233 Forward Crankshaft Seal S18-1234 Rear Crankshaft Seals S18-0903 Water Pump Mounting...

Sierra Valve Grind Gasket Set - Mercruiser - S18-1258. Contains: Sierra CodeDescription S18-3874 Head Gasket S18-0467 Carb Mounting Gasket S18-0463 Carb Mounting Gasket S18-0462 Carb Mounting Gasket NSS Intake Manifold...

Sierra Head Gasket Set - Mercruiser - S18-1259 Contains: Sierra CodeDescription S18-3877 Head Gasket S18-0467 Carb Mounting Gasket S18-0463 Carb Mounting Gasket S18-0462 Carb Mounting Gasket S18-1231 Intake Manifold...

Sierra Short Block Gasket Set - Mercruiser - S18-1265. Port Dip Stick Models ONLY Left Hand (Standard Rotation) Contains: Sierra CodeDescription S18-0153 Oil Pan Gasket S18-0905 Oil Drain Screw Gasket S18-0185 Oil Filter...

Sierra Short Block Gasket Set - Mercruiser - S18-1268. Port Dip Stick Models ONLY Left Hand (Standard Rotation) Contains: Sierra CodeDescription S18-1237 Oil Pan Gasket S18-0905 Oil Drain Screw Gasket S18-0185 Oil Filter...

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 Gasket 27-33395 2 S18-0897 Exhaust Elbow Mounting...

Sierra Engine Coupler - Mercruiser - S18-2413. Replaces: 69354A1, 69354A2 For: 470, 485 (224 cu. in.) S/N 4208730-6218036 (1976-1982) Part Number SRA-S18-2413

Sierra Head Gasket - Mercruiser - S18-2946. Replaces: 3853336, 908611 Fits: GM 181 (3.0L) CID Eng. Part Number SRA-S18-2946

Sierra Thermostat Kit - Mercruiser -  S18-3647 Replaces: 807252Q5, 807252T8 Contains: Sierra CodeDescriptionO.E # S18-3649 Thermostat 807252-2 S18-2844 Thermostat Cover Gasket 27-48818-1 S18-2552 Thermostat Cover...

Sierra Thermostat Kit - Mercruiser - S18-3668. Replaces: 807252T4, 807252Q4 Contains: Sierra CodeDescriptionO.E # S18-2552 Thermostat Cover Gasket 27-33179-2 S18-2553 Thermostat Cover Gasket 27-47510 S18-2554 Thermostat Cover...

Sierra Thermostat Kit - Mercruiser - S18-3648. 160° Part Number SRA-S18-3648

Sierra Thermostat Kit - Mercruiser - S18-3646. Replaces: 807252Q3, 807252T6 Contains: Sierra CodeDescriptionO.E # S18-3551 Thermostat 59137 S18-2917 Thermostat Housing Gasket 27-53045-1, 27-33918 S18-2844 Thermostat Cover...

Sierra Fuel Pressure Regulator - Mercruiser - S18-33211. Replaces: 892681 Fits: Mercruiser 8.1L, 496 Mag HO, 502 Mag MPI 375-400 HP. Part Number SRA-S18-33211