Yamaha Anode Set 99999-03935-00. Overview. The Yamaha Anode Set 99999-03935-00 is a genuine original equipment manufacturer kit designed to protect your engine from corrosion caused by electrolysis. This set includes sacrificial anodes that are engineered to corrode in place of critical engine components, helping preserve the integrity and longevity of your outboard.. Corrosion is a constant concern in marine environments, whether in freshwater or saltwater. Anodes absorb the damaging effects of