Yamaha - Engine Anode Corrosion Protection 6J8-11325-00-00. Overview. If you run Yamaha outboards in saltwater, corrosion protection is something you stay on top of. The Yamaha Engine Anode 6J8-11325-00-00 is designed to absorb galvanic corrosion so the surrounding engine components stay protected. Instead of letting electrolysis attack the metal inside your engine, the anode sacrifices itself first. It's a simple part, but keeping it in good condition goes a long way toward protecting the motor