Yamaha - Corrosion Anode Engine Protection Component 6G0-45251-00-00. Overview. The Yamaha Corrosion Anode 6G0-45251-00-00 is one of those parts that quietly protects your motor every time it's in the water. It's designed to take the hit from corrosion so your lower unit and other metal components don't have to. If you're running in saltwater or even brackish conditions, this is something you want to keep an eye on. Replacing it regularly is a simple step that can save you from expensive damage down the line.. Key Features. • Corrosion Protection - Sacrificial design helps prevent damage to critical metal engine components.. • OEM Fit Precision - Built to Yamaha specifications for proper mounting and effective performance.. • Saltwater Defense - Helps protect against accelerated corrosion in harsh marine environments.. • Easy Replacement Design - Simple to inspect and swap out as part of routine maintenance.. Compatibility. Compatible with select Yamaha outboard engines using this anod