Yamaha - Trim Tab Anode Corrosion Protection Component 6CE-45373-00-00. Overview. Saltwater and stray electrical currents can slowly eat away at metal components on an outboard if they aren't properly protected. This Yamaha Trim Tab Anode is designed to sacrifice itself before corrosion reaches critical steering and lower unit components. It also functions as the trim tab, helping fine-tune steering balance while underway. Built to Yamaha's specifications, this anode provides dependable protecti