Yamaha - Anode Corrosion Protection 6E5-45251-00-00. Overview. If you spend any time in salt or brackish water, you learn pretty quick that corrosion doesn't take a day off. This anode is one of those small parts that quietly protects the expensive stuff-your lower unit, your hardware, everything below the waterline. It wears down so your engine doesn't, and that's exactly what you want. Swap it out regularly, and you'll keep your Yamaha looking and running like it should.. Key Features. Sacrificial Metal Design - Draws corrosion away from critical engine components to prevent damage.. Marine-Grade Alloy Build - Holds up in harsh saltwater and mixed water conditions.. Direct Yamaha Fitment - Installs cleanly using factory mounting points with no modification.. Consistent Protection Over Time - Maintains effectiveness as it gradually wears instead of failing suddenly.. Engine & Boat Compatibility. 115 HP Yamaha Outboards - 1986-2005 130 HP Yamaha Outboards - 1988-2004 150 HP Yamaha Outb