Spanner Nut Wrench for MerCruiser Alpha One and Bravo – Replaces 91-17256

Remove and install the drive shaft bearing retainer on MerCruiser Alpha One and Bravo sterndrives. The AMT0057 replaces Mercury spanner wrench 91-17256 and is made from thicker steel with a longer handle than the factory tool, for more leverage on a tight retainer. Backed by the Marine Tech Tools lifetime warranty.

Reference part numbers: 91-17256, 91-36235, 9-79801

Fits These Motors

• MerCruiser MC-I, Alpha One and Alpha One Gen II
• MerCruiser Blackhawk
• MerCruiser Bravo