Includes all seals, o'rings, bearings and gears for the lower unit.
Mercury / Mariner 3.0 liter outboards (Fleetmaster units only)
1.75:1 ratio 12 / 21 tooth count
1994 - 1999 units with 3.500" OD & 1.875" ID forward bearing
Single upper driveshaft bearing
Non-ratcheting clutch