Mercury - Quicksilver Aluminum Anode Kit Outboard Corrosion Protection Series Aluminum Finish 8M6007993. Overview. If you run a Yamaha four stroke forty to sixty horsepower outboard, you already know how important it is to keep things simple, dependable, and protected. These engines are the workhorses of weekend fishing trips, long shoreline cruises, and quiet early-morning runs. You want to turn the key and feel confident your gear is ready - not wonder what might be happening beneath the surfa