Mercury - Magnesium Anode Kit Bravo One Series Magnesium Protection 888757Q02. Overview. Every freshwater boater knows that long days on the lake can be hard on a sterndrive, even when the water looks calm and clean. Corrosion is slow, sneaky, and unforgiving-but with the right gear, it never has a chance to get started. The Quicksilver 888757Q02 Magnesium Anode Kit gives your MerCruiser Bravo One drive the kind of dependable protection you can feel good about each time you throttle up. It's the