Yamaha - Anode Corrosion Protection System 6E0-45251-12-00. Overview. Anodes are one of those parts you don't notice until they're gone-and by then, the damage is already starting. They're there to take the hit from corrosion so your lower unit and other metal components don't have to. I always tell people to check them regularly, especially if you're running in saltwater. Keeping a fresh anode on the motor is cheap insurance against bigger repairs down the line.. Key Features. Sacrificial Corrosion Protection - Attracts corrosion to protect critical engine and lower unit components.. Marine-Grade Alloy Construction - Designed to perform reliably in both fresh and saltwater environments.. Direct Mount Fitment - Installs easily in the factory location for proper protection coverage.. Long-Lasting Performance - Provides extended protection before needing replacement under normal use.. Engine & Boat Compatibility. Designed for Yamaha 2-stroke outboard engines with standard corrosion prote