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

Sierra Engine Coupler - Mercruiser - S18-2172. 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...

Sierra Alternator - Mercruiser - S18-5983. Replaces: 862030T, SAE J1171 7SI/70 amp, Hinge Mount, Single Groove Pulley Part Number SRA-S18-5983

Sierra Starter - Mercruiser - S18-6946. Replaces: 50-8m8021116 Fits: High Performance 11 Tooth Starter for 6.2L & 8.9L Scorpion HO applications Part Number SRA-S18-6946

Sierra Alternator - Mercruiser - S18-6298. Replaces: 863077T, SAE J1171 7SI/70 amp, Hinge Mount, Serpentine Pulley 1.97” Diameter Part Number SRA-S18-6298

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...