Home Engine Systems Engine Care Anodes Zinc Plate Hull Anode (GA12/ZSS12) Galvotec Inc Zinc Plate Hull Anode (GA12/ZSS12) $36.99 Zinc Plate Hull Anode (GA12/ZSS12) quantity Add to cart Product Details Product Details GA12/ZSS12. Zinc Plate. (1) Cast-in Galvanized Steel Strap, Weld on. 11-1/2 lbs. Dimensions: 3″ W x 12″ L x 1-1/4″ T.