Quicksilver - Aluminum Prop Nut Anode Kit Bravo Three Series Cast Aluminum Finish 865182Q01. Overview. There's a certain kind of peace you feel when you know your sterndrive is protected - not hoped-for, not "good enough," but truly protected. Corrosion can sneak up on even the most seasoned boater, and when it does, it's usually the small, unseen spots that take the biggest hit. That's why a good anode gives you real confidence. This Mercury Marine part is the kind of simple, dependable protect