Yamaha - Trim Tab Skeg Anode Corrosion Protection Component 67F-45371-00-00. Overview. The Yamaha Trim Tab Skeg Anode 67F-45371-00-00 is one of those parts that quietly takes the hit so the rest of your lower unit doesn't have to. If you're running in saltwater or even brackish conditions, corrosion is always working against you. This anode sacrifices itself to protect critical components like your skeg and lower unit. It's a simple swap, but one that can save you from expensive repairs down the line.. Key Features. • Sacrificial Corrosion Protection - Absorbs corrosive damage to protect lower unit components.. • OEM Fit Precision - Designed to match Yamaha trim tab mounting points for secure installation.. • Maintains Steering Stability - Functions as a trim tab while protecting the skeg and gearcase.. • Saltwater-Ready Construction - Built to perform in harsh marine environments.. Engine & Boat Compatibility. • T50 1996-Present• T60 2001-Present• F70 2010-Present• F75 2003-Present• F