Home Engine Systems Engine Care Anodes Zinc Donut Shaft Anode (Shaft Size 3-1/2”) Camp Zinc Donut Shaft Anode (Shaft Size 3-1/2”) $72.39 Zinc Donut Shaft Anode (Shaft Size 3-1/2”) quantity Add to cart Product Details Product Details Meets all MIL-A-18001 specifications. Used as sacrificial anodes to protect propellers, struts, bearings, etc. from underwater electrolysis. Supplied with stainless steel screws and lock washers. Shaft size 3-1/2″. 6-1/2″ OD.
