Yamaha - Anode Corrosion Protection Component 6L5-45251-03-00. Overview. Anodes are one of those parts that quietly do their job until they're gone-and by then, damage can already be happening. I always tell people, if you're running in saltwater or even brackish water, this is not something to skip. This Yamaha anode takes the hit so your lower unit and other metal components don't. It's a simple replacement that goes a long way in protecting your motor over time.. Key Features. Sacrificial Corrosion Protection - Absorbs electrolysis to protect critical engine components.. Marine-Grade Material - Designed to break down gradually instead of allowing damage to other parts.. Factory-Spec Fitment - Matches Yamaha mounting points for secure and proper installation.. Extends Component Life - Helps prevent corrosion on lower units and internal metal surfaces.. Easy Maintenance Item - Simple to inspect and replace during routine service.. Engine & Boat Compatibility. Designed for Yamaha outbo