Mercury - Aluminum Anode Kit BRP / OMC Cobra Series Cast Aluminum Finish 8M6008001. Overview. There's a certain kind of comfort that only boaters understand-the comfort of knowing the parts you can't see are doing their job while you're focused on the horizon. When you push away from the dock and feel the hull settle into the water, you want the quiet assurance that your sterndrive is protected, no matter what the day brings. Corrosion never takes a day off, and every boater learns that lesson s