GM 378450 MerCruiser 938-7482 Cylinder Head V8 305 5.0L Early 228 1977-1979 Trim Tab Parts MerCruiser Sterndrive Alpha One Lower

MerCruiser Sterndrive Alpha One Lower Unit Bearing Carrier Used in MerCruiser R / MR & Gen I (1983-1990) & also Gen II lower units 1991 & Up However

Inside hole diameter is 1

Unknown Brand - Black Face / Black Bezel / Blue-White Numbers Vintage Gauges

85hp 88hp 90hp 100hp 110hp 115hp 140hp Possibly others

Cover 307710 0307710

GM 378450 MerCruiser 938-7482 Cylinder Head V8 305 5.0L Early 228 1977-1979 Trim Tab Parts MerCruiser Sterndrive Alpha One LowerParts Included MerCruiser 938 6536 > 938 7482 GM Part Number 378450 Compatibility Generally the best practice is to just match your existing casting numbers. Found on MerCruiser OMC GM Chevy V8 305cid 5. 0L 4BBL Models > 228hp & 230hp with 4BBL Intake Models 1977 1979 at the latest as this is an early version of the 378450 (there was a later version with larger valves) Used with the standard 2 piece Rear Main Seal engines. Perimeter Bolt Valve Covers