Mercury - Aluminum Anode Kit Corrosion Protection System Aluminum Marine Finish 8M0205956. Overview. Out on the water, corrosion is the kind of enemy you never actually see working-but you always feel better knowing you're protected from it. That quiet confidence comes when you've outfitted your engine with the right anodes, the ones designed to sacrifice themselves so your outboard stays healthy season after season. The Mercury Marine part 8M0205956 Anode Kit gives you that peace of mind. Wheth