Mercury - Quicksilver Aluminum Anode Kit Outboard Corrosion Protection Series Aluminum Finish 8M6007992. Overview. There's a special kind of confidence you feel when you push the throttle on a powerful Yamaha three hundred or three hundred fifty horsepower outboard. It's not just about the speed - it's about the trust you place in the machine beneath you. That trust comes from knowing every part of your engine, even the ones you rarely see, is protected. The Mercury Marine part number 8M6007992