MerCruiser 220-8775 Flywheel GM 4cyl 120hp 140hp 2.5L 3.0L 3791021 3781021 Brackets Braces Levers Linkages 150 HP (Yamaha®)--1979-1983

150 HP (Yamaha®)--1979-1983

plastic front face cover plate used with models that had electric start

I can't say that every single bolt nut and washer is here from this engine

There is some damage where the water pump housing plate mounts

MerCruiser 220-8775 Flywheel GM 4cyl 120hp 140hp 2.5L 3.0L 3791021 3781021 Brackets Braces Levers Linkages 150 HP (Yamaha®)--1979-1983Item Details MerCruiser 220 8775 Flywheel (used with hub style couplers) Stamped 3791021 (which sometimes looks like 3781021) Interchangeable with 2778810 12 3 4" Diameter! NOT FOR V6 or V8 applications! Used from 1970 1989 on virtually all MerCruiser 2. 5L & 3. 0L 120hp 140hp GM 4cyl applications Only for use with 2 piece rear main seal engines (1989 & Before) It was roughly 1990 when they switched over to 1 piece rear main seal engines will measure