Mercury - Quicksilver 809666A02 Aluminum Anode Kit Bravo III Drives Prop Nut Assembly 809666A02. Overview. Every boater knows that corrosion is the quiet enemy below the surface. The Quicksilver 809666A02 Aluminum Anode Kit is your first line of defense - a simple, reliable way to protect your MerCruiser Bravo III drive from galvanic corrosion that can eat away at metal components over time.. This OEM kit comes complete with a bronze prop nut and stainless-steel hex bolt, giving you everything y