Mercury - Quicksilver Aluminum Anode Kit Sterndrive Corrosion Protection Series Aluminum Finish 8M6007991. Overview. Every boater knows corrosion is always lurking below the surface. You may not see it day to day, but the water, the current, and the metals beneath your boat are constantly interacting. When you have a good anode kit in place, there's a quiet confidence that settles in - the kind that lets you focus on the run ahead instead of worrying about what's happening under the waterline. T