Yamaha - Anode Corrosion Protection Component 6N0-G5251-00-00. Overview. Corrosion is one of those things that quietly eats away at your motor if you're not paying attention. I've seen engines in great shape overall, but with damage in spots where the anode was worn out or missing. This piece takes that hit so the rest of your engine doesn't have to. It's simple, but it's one of the smartest preventative parts you can stay on top of.. Key Features. • Sacrificial Corrosion Protection - Attracts corrosive elements to protect critical engine components.• OEM Fit and Placement - Designed to mount correctly for effective coverage.• Marine-Grade Material - Built for performance in both saltwater and freshwater environments.• Easy Maintenance Replacement - Simple to inspect and swap during routine service.. Engine & Boat Compatibility. Designed for Yamaha outboard engines operating in marine environments. Commonly used across a range of Yamaha outboards where corrosion protection is essential