Alpha parts 1990 mercruiser diagram transom 1983 sterndrive bayliner capri gen drive housing serial gear mr assembly mercury boat number Free 1979 mercruiser 140 w/outdrive, midlothian, tx
MerCruiser R/MR/ALPHA ONE (Sterndrive) 1983-1990 GEAR HOUSING
![MerCruiser R/MR/ALPHA ONE (Sterndrive) 1983-1990 GEAR HOUSING](https://i2.wp.com/www.marineengine.com/parts/mercury_marine_parts/static/img/COMMON/30068.gif)