Sierra 18-2100K Seal Bearing Kit Sierra replacement greasable seal and bearing kit for Mercruiser Stern Drives. Sierra aftermarket engine parts are manufactured to meet or exceed OEM requirements. Includes a heavy duty gimbal bearing and oil seal. Fits 1, R, MR and Alpha 1974-1997 Interchangeable with Mallory 9-72426 California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov Other Details Google Product Type Engine Parts Wiser Yes Product MPN 18-2100K Product UPC 80828219395