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Mercruiser Engine Coupler by Sierra
For 470, 485 (224 cu. in.) S/N 4208730-6218036 (1976-1982).
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Mercruiser Engine Coupler by Sierra Round Style Engine Coupler for All GM Marine Engines Except Mercruiser MR/Alpha/Bravo with Triangular, 3-Bolt Coupler. Replaces: Mercruiser 76850A2, 38965A1,...Add to Cart
Mercruiser Engine Coupler by Sierra 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. Replaces:...Add to Cart