Product Review

MerCruiser Hinge Pin Tool (replaces OEM 91-78310). The material is 4140 Hardened Tool Steel equivalent to Grade 8, with a minimum Rockwell hardness of C33. This tool is used on the hinge pin bolt and separates the housing from the gimbal ring. This tool will work on MerCruiser Sterndrives: Alpha One, Alpha One Generation Two, Bravo One, Bravo Two, Bravo Three, R, MP, MC-1. Tool comes with black oxide finish preventing corrosion to assure many years of service. 100% Made in the United States.