Yamaha - Anode Corrosion Protection System 6E0-45251-00-00. Overview. Anodes are one of those parts that quietly do their job until they're gone-and then you start seeing problems. They take on corrosion so your lower unit and other metal components don't have to. I always tell people to check them regularly, especially if the boat sees saltwater. It's a small, inexpensive part that goes a long way in protecting your motor.. Key Features. Sacrificial Corrosion Protection - Draws corrosive activity away from critical engine components.. Marine-Grade Alloy Build - Designed to perform in both fresh and saltwater environments.. Direct Mount Design - Installs easily in factory locations for proper protection coverage.. Long Service Life - Provides extended protection under normal boating conditions.. Engine & Boat Compatibility. Designed for Yamaha 2-stroke outboard engines with standard corrosion protection systems. Commonly used on motors installed on skiffs, center consoles, and fishing