Yamaha - Anode Corrosion Protection 6E5-45251-00-00. Overview. Ask anyone who runs in salt or even brackish water-anodes are cheap insurance you never want to skip. This Yamaha anode is designed to take the hit from electrolysis so your lower unit and critical metal components don't have to. It quietly does its job in the background, sacrificing itself over time to protect more expensive parts. Swap it out when it's worn down, and you'll avoid a lot of headaches down the line.. Key Features. Sacrificial Protection Design - Absorbs corrosive electrical activity to protect vital engine components.. Marine-Grade Alloy Construction - Engineered specifically for durability in harsh saltwater environments.. Exact Yamaha Fitment - Mounts directly in place with no modification required.. Long-Lasting Performance - Provides consistent protection over extended use between replacements.. Engine & Boat Compatibility. Compatible with a wide range of Yamaha outboard engines that use external or lowe