Complete Gimbal Bearing Assembly. Fits All OMC Cobra Sterndrives, All Mercruiser Sterdrives R/MR/Alpha one/Alpha One Gen II/ Bravo Drives,And Volvo Penta Sx Drives. You will also need a Bell housing Gasket Kit when replacing the gimbal bearing. See the list below for the gasket kit for your model. Mercruiser R/MR/Alpha one/Alpha One Gen II:Part 39622 Mercruiser Bravo: Part number 39640 Omc Cobra: Part 39630 Volvo Penta Sx: Part 86300 Note: Also If there is rust on your gimbal bearing check your Ujoint bellow for leaks.