97-31640T6 | Magnesium Anode - Mercury, Mariner Outboards, MerCruiser Stern Drives.
Magnesium trim tab anode will help combat galvanic corrosion and aid in reducing steering torque.
Compatible with many brands of propeller that use the removable hub design such as Mercury, Mercruiser, Quicksilver, Solas, Michigan Wheel,
Measures 3 5/8 inches