Motors & Parts - Inboard & Outboard

Sierra Commutator End Plate - Mercruiser - S18-6254. Replaces: 392-2940 For: Use with Prestolite Pumps (Mercury #’s 79271A4 and 88475A5) Part Number SRA-S18-6254

Sierra Composite Pulley - Mercruiser - S18-6457. Replaces: 807757T 3” OD Serpentine for 13/16” width belt For: Late model GM V6 & V8 engines Part Number SRA-S18-6457

Sierra Thermostat Service Kit - Mercruiser - S18-1989K. Service Kit for S18-1989 Thermostat Housing. Part Number SRA-S18-1989K

Sierra Thermostat - Mercruiser - S18-3649. Replaces: 8072522, 807252T2, 8052732, 8M0091470 160° Part Number SRA-S18-3649

Sierra Thermostat - Mercruiser - S18-43015. Replaces: Mercury 864493 Fits: Mercruiser MCM 4.3L MPI, 5.0L MPI and MX6.2L w/dry joint exhaust and closed cooling Part Number SRA-S18-43015

Sierra Thermostat - Mercruiser - S18-3551. Replaces: 32728, 35884, 59137, 59137A1, 8072521, 8072531, 807252T1, 8M0089715 142° Part Number SRA-S18-3551

Sierra Thermostat - Mercruiser - S18-3555. Replaces: 99155T1 Part Number SRA-S18-3555

Sierra Thermostat - Mercruiser - S18-3550. Replaces: 59078, 59078A1 140° Part Number SRA-S18-3550

Sierra Impeller Repair Kit - Mercruiser - S18-3237. For: Bravo I, II, III (1988 & up) B664190 & up Fits Bravo drives with 1 piece housing Contains: Sierra CodeDescriptionO.E #Qty S18-3087 Impeller 47-59362 1 S18-3350 Wear...

Sierra Impeller - Mercruiser - S18-3087. Replaces: 47-59362, 47-59362T Part Number SRA-S18-3087

Sierra Manifold - Mercruiser - S18-1956-3. Supplied with Mounting Package Replaces: Mercruiser 860235A04, 99798A3, 99798A9, 99798A16, 99798A18, 806867A8 Marine Power 600333 Barr MC 1 99798 Fits: 2.5 & 3.0L (1983-89) Part...

Sierra Manifold - Mercruiser - S18-1953-2. Port & Starboard. Supplied with Mounting Package Replaces: Mercruiser 87114A19, 86024A10, 860246A15, 860246A3, 860246A7, 860246A9, 860336A2, 860337A2, 87114A19, 87114A30 Marine Power 0994-100, Barr...

Sierra V6 Dry Joint Exhaust Manifold - Mercruiser - S18-1842. Replaces: 864612T01 Fits: 4.3L Alpha/Bravo (2002 and Newer without Engine Catalyst) Use with: Dry Joint Elbow Gaskets: S18-0720, S18-0721 or S18-0722 Part...

Sierra Exhaust Manifold (Dry Joint) - Mercruiser - S18-1843. Replaces: 865735A02, 865049T01, 864308T01 Fits: 305, 350, 377, 5.0L, 5.7L, 6.2L(2002 and Newer) Use with: Manifold Gasket: S18-2949 Elbow Gaskets: S18-0720, S18-0721 or S18-0722 Elbow:...

Sierra Elbow - Mercruiser - S18-1972. Replaces: 76325A2, 12076A2 Barr MC-20-76325 Fits: Most late Model 120, 140 HP Mercruiser applications Use with: Manifold: S18-1955-1, S18-1954-1, S18-1956-3, S18-1901 Elbow Gasket: S18-2833 Mounting...

Sierra Elbow - Mercruiser - S18-1976-2. Replaces: Mercruiser 44354A3, 44354A9, 44354A10, 44354A13, 807914A1, 807988A2, 807988A03 Marine Power 0992-400, Barr MC-20-44354 Fits: Most Mercruiser V-6 & V-8 applications 7° (4” O.D. Riser)...

Sierra Elbow - Mercruiser - S18-1978 Replaces: 76771A3, A2, 60427A2, 53779A2, 53779A1 Barr MC-20-76771 V-8 Inboard Applications Only Use with: Manifold: S18-1950-1, S18-1951-1, S18-1958-1, S18-1962-1 Elbow Gasket: S18-2833 Mounting Kit:...

Sierra Drain Plug - Mercruiser - S18-4226. Replaces: 22-806608A1, 22-806608A02 Part Number SRA-S18-4226

Sierra Drain Elbow Assembly - Mercruiser - S18-4224. Replaces: 22-806926A1, 22-862210A01 3/4” NPT Part Number SRA-S18-4224

Sierra Outdrive Gasket Set - Mercruiser - S18-2614. 1967-1982 Replaces: 27-64818A1, 27-64818T4, 27-64818Q4, 27-64818A20, 27-64818A4, 27-64818, 27-45821 Contains: Sierra CodeDescriptionO.E #Qty S18-2820 Drive Shaft Housing to Bell Housing...