Sierra 18-9817 Shift Shaft Bushing Tool Removes And Installs The Shift Shaft Bushing In The Gear Case Of MC-I,R-MR, and Alpha One Drive units And Outboards. Sierra replacement engine parts are manufactured to meet or exceed OEM requirements. For use with MC-I, R-MR, and Alpha One Interchangeable with GLM 90140 Mercury Marine 91-23033 91-23033T 91-24150 91-31107 91-31107T California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov Other Details Google Product Type Special Tools