Aftermarket Mercruiser 8M2011027 Spanner Nut
The Sierra 18-9803 Spanner Nut Wrench replaces Mercury 91-17256 and is used to remove and install the drive-shaft bearing retainer on the listed Mercruiser drive applications.
Removes and installs drive shaft bearing retainer on MC-I, R-MR, Blackhawk, all Bravo and all Alpha drive units
What is Sierra 18-9803?
Sierra 18-9803 is an aftermarket spanner nut wrench for Mercruiser applications.
Which part numbers cross-reference Sierra 18-9803?
This listing cross-references GLM 90100, Mallory 9-79801, Mallory 91-17256 and Mallory 91-36235. See the Cross References & Alternative Products section above for linked alternatives where available.