Sierra Engine Coupler - Mercruiser - 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...

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

Sierra Starter - Mercruiser - S18-5903. (No Core) (Clockwise) Bottom mount, two bolt pattern for standard rotation Ford engines. Replaces: 50-69865A1, 50-12872, 50-56886 Replacement Solenoid:...