MerCruiser Alpha One 1 Lower Unit Gear Set Forward Reverse Bearing Carrier 70-77 Waterski Tow Hooks & Pylons 8L 351 which came in

8L 351 which came in various horsepowers (170hp / 175hp / 190hp / 235hp / 240hp / 250hp)  from 1974-1979

May also work With:

Unknown Application

This is used on many Mercruiser V6 V8 late 80's and Newer

MerCruiser Alpha One 1 Lower Unit Gear Set Forward Reverse Bearing Carrier 70-77 Waterski Tow Hooks & Pylons 8L 351 which came inItem Details MerCruiser Sterndrive Alpha One Lower Unit Complete Gearset That was generally found in 1970 1977 models (Pinion, Forward, Reverse) & Bearing Carrier Used in MerCruiser MC 1, #1, "R Drive" lower units 1970 1977 but also could be used as a complete set in 1978 1982 units if you use all of the gears here. (If your driveshaft HAS A PRELOAD PIN then these are the correct parts, if your's does NOT have a preload pin, then these are NOT the