Mercury - Power Trim Assembly Anode Corrosion Protection Series Aluminum 880653. Overview. Anyone who spends real time on the water knows how quickly corrosion can attack even the toughest outboards. That is why a dependable anode feels less like a simple piece of metal and more like a quiet guardian standing between your engine and the harsh marine world it lives in. The Mercury 880653 Aluminum Anode is one of those parts you install once, trust fully, and appreciate every time you tilt the mot