Home Engine Systems Engine Care Anodes Zinc Anode – Mercury/Mercruiser (R/MR/Alpha One) Sierra International Zinc Anode – Mercury/Mercruiser (R/MR/Alpha One) $18.99 Zinc Anode – Mercury/Mercruiser (R/MR/Alpha One) quantity Add to cart Product Details Product Details Zinc. For use on R/MR/Alpha One (Sterndrive & Transom Assembly 1983-90) and prior drives. Replaces: 34127A1, T2.
