Mercury - Aluminum Anode Assembly for Sport Jet Engines Corrosion Protection Marine-Grade Aluminum 856581C. OverviewIf you've ever run a Sport Jet hard through shallow rivers, fast-moving channels, or long stretches of open lake, you know how much your engine relies on every component working in harmony. Corrosion isn't dramatic-it doesn't shout or shake the boat-but it quietly eats away at the parts you depend on. That's why a solid anode gives you such peace of mind. With the Mercury Marine pa