Sierra 18-6101 Lower Unit Zinc Anode - OMC Cobra Interchangeable with GLM 12773 JohnsonEvinrude Outboard 983494 OMC Stern Drive 983494 Fits 1987 2.5, 3.0, 4.3, 5.0, 5.7 L Cobra Lower Units California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov Other Details Google Product Type Engine Parts Wiser Yes Product MPN 18-6101 Product UPC 808282103453