MerCruiser 23-30617A2 77481 MR Alpha One 1 Lower Unit I/O Shift Shaft Bushing
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- You will receive a set just like the one pictured here.
- MerCruiser Sterndrive Alpha One Lower Unit Shift Components
- Generally Used in MerCruiser Gen I / R / MR lower units 1970-1990
- Specifically Serial Numbers 3780850 & Up
- Notable Parts Included
- Shift Shaft 77481-1
- Shift Shaft Bushing Assembly 23-30617A2 (May need new seal)
- Shift Crank 76865 / 66062 / 8M2009865
They used the same lower gearcase with all of the engines 1970-1990 (they had 2 different versions in that time period) so you're particular engine does not really matter so this basically covers most (120hp 140hp 4cyl 165hp 6cyl 170hp 305 350 470 2.5L 3.0L 4.1L 3.7L 5.0L 5.7L V8 etc... Just find your gearcase's diagram and match the parts.
- Freshwater Used Part!
- Purchase with confidence!
Relevant Part Number List
- 18-2150 (Sierra)
- 18-2154 (Sierra)
- 18-2130 (Sierra)
1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990