Located on the pinion shaft, driveshaft housing, lower bearing.
Bearing number Timken #89449, Cone #89410
Replaces Mercruiser # 31-35990A 1/35990A1 and also OMC # 983891; GLM 21540, Mallory 9-75122
Fits: IA/IB/IC & EZ Shift, MC-I, R, MR, Alpha One & Gen II (except 1.32 ratio), Vazer.