Locknut
OEM: Mercury
Replaces: Mercury 859124 | 45812
For 1975-2008 MC-1, R/MR/Alpha One, SSM & Dry Six drive gearcase anodes, steering indicators, trim cylinders, electrical systems and other applications. Stainless steel.
also crosses with:
Sierra: 18-2344
GLM: 21161
Mallory: 9-78125
UPC: 840080485904