Yamaha - Anode Cover Assembly Corrosion Protection Component 69J-11301-10-00. Overview. If you spend time rigging or maintaining Yamaha outboards, you know corrosion protection is something you never want to overlook. The Yamaha Anode Cover Assembly 69J-11301-10-00 protects internal anodes and helps keep the engine block shielded from the harsh effects of saltwater exposure. It's one of those small parts that quietly does an important job, especially for engines that spend long days in coastal o