Engine Parts - Other

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 Gasket 27-46820 2 S18-0897 Exhaust Elbow Mounting...

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 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 S18-2830-1 Intake Exhaust...

Sierra Bell Housing Bushing Kit - Mercruiser - S18-2622. Replaces: 23-79373A1, 23-805041A2, 27-45588, 27-79373 Part Number SRA-S18-2622

Sierra Bell Housing Bushing Kit - Mercruiser - S18-3760. Replaces: 23-806036A1 For: GEN II Serial # F680000 & UP  Part Number SRA-S18-3760

Sierra Engine Coupler - Mercruiser - S18-2171. Replaces: 32492A2, 32492A3, 32492A5, 38965A1, 38965A2, 76850A2 For: All GM engines except MR/ALPHA/BRAVO with “Triangular”, 3-Bolt coupler Part Number SRA-S18-2171

Sierra Engine Coupler - Mercruiser - S18-2173. Replaces: 59826A1, 59826A3 For: Ford engines Part Number SRA-S18-2173

Sierra Engine Coupler - Mercruiser - S18-2172. Replaces: 14505A2 Used when replacing V6 or V8 2 piece rear main seal with 3-1/2” crankshaft bolt pattern to a newer 1 piece rear main seal engine with 3” bolt pattern Part...

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 Yoke Assembly - Mercruiser - S18-6401 Replaces: 12784A10, 12784A4 For: Bravo I, II, III (OB664190 - up) (1998-05) Part Number SRA-S18-6401

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 Housing - Mercruiser - S18-1977-1. Replaces: 47441, 47441A1 Fits: 225, GM 260, 228, 898/198, 185R, 898R, 228R, 2GR Part Number SRA-S18-1977-1

Sierra Thermostat Kit - Mercruiser - S18-3652. Contains: Sierra CodeDescriptionO.E # S18-2555 Thermostat Cover Gasket 27-89656-1 S18-2843 Thermostat Cover Gasket 27-74830 S18-3552 Thermostat 76270   Part...

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 - S18-3667. Contains: Sierra CodeDescriptionO.E # S18-2555 Thermostat Cover Gasket 27-89656-1 S18-3555 Thermostat 99155A1   Part Number SRA-S18-3667

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

Sierra Thermostat Kit - Mercruiser - S18-3644. Contains: Sierra CodeDescriptionO.E # S18-3649 Thermostat 160° 807252T2 S18-2553 Thermostat Cover Gasket 27-47510 S18-2917 Thermostat Cover...

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...