This brand new OEM Quicksilver Gimbal Housing Anode, part number 821631Q1, is a must-have for any boat owner. It is compatible with Mercury engines and is designed to protect your stern drive from corrosion. Made from high-quality materials, this anode is durable and long-lasting.Whether you are a seasoned boater or just starting out, this anode is essential for maintaining the health of your engine. Its easy installation process and reliable performance make it a top choice for boat owners everywhere. Don't let corrosion damage your stern drive - protect it with the Quicksilver Gimbal Housing Anode.