MerCruiser Lower Unit Gearcase Gear Set Carrier 43-878087A4 Alpha One 1983-1990 Transom Plate If you are unsure on

If you are unsure on compatibility or if this will work for you

The Part Number of Cylinder Head Cover 376813

48-32186 48-32186A1  48-32186-12

D5JE-6675-CA

Years:  1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 19801981 1982 1983 1984 1984 1985 1986 1987 1988 1989 1990 1991 1992  (and possibly others)

MerCruiser Lower Unit Gearcase Gear Set Carrier 43-878087A4 Alpha One 1983-1990 Transom Plate If you are unsure onItem Details MerCruiser Sterndrive Alpha One Lower Unit Complete Gearset 43 878087A4 (Pinion, Forward, Reverse) Used in MerCruiser MR & Gen I lower units 1983 1990 These are the correct gears if your lower gearcase DOES NOT HAVE A PRELOAD PIN on top of the driveshaft ****If your gearcase HAS A PRELOAD PIN, then these are not the correct gears***** If you are looking for a 1970 1982 Gearset please contact me and I should be able to help. Pinion Gear