Replaces OE# 812975A5 + 824700A1
Fits Mercury & Mariner 3.0 Liter enginesStandard rotation, non-ratcheting for 3.265" diameter forward bearing gearcase only12 / 21 tooth count 1.75:1 ratio
Fits Mercury & Mariner 3.0 Liter enginesStandard rotation, non-ratcheting for 3.500" diameter forward bearing gearcase only12 / 21 tooth count 1.75:1 ration