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

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

Sierra Alternator - Mercruiser - S18-5945. (3-Wire) (No Core) (68 AMP), SAE J1171 Replaces Mando, Motorola and original equipment Delco. Uses same electrical connections and mounting method...

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

Sierra Starter - Mercruiser - S18-5907 (Heavy-Duty) (No Core) (Clockwise) (9 tooth) Top mount rear entry starter for opposite rotation GM & Ford engines. Will also replace bottom mount standard...

Sierra Starter - Mercruiser - S18-5908 (Heavy-Duty) (No Core) (Counter-Clockwise) (9 tooth) Top mount rear entry starter for standard rotation GM & Ford engines. Front mount reverse rotation...

Sierra Elbow - Mercruiser - S18-1973. Replaces: 39920, 39920A1, 55538A2 Barr MC-20-55538 Fits: Most early Model 120 HP Mercruiser applications Part...

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,...