Mercury - Magnesium Anode Kit Bravo III Series Freshwater Protection 888760Q04. OverviewWhen you spend most of your time on freshwater lakes, you get to know the quiet ways your boat talks to you. A smooth tilt, a clean trim response, and a sterndrive that looks as solid as the day you bought it - those little things give you confidence every time you launch. The Mercury Marine part number 888760Q04 Magnesium Anode Kit helps preserve that confidence. It works in the background, guarding your Bra