This genuine OEM outdrive gimbal housing zinc anode is designed for use with Mercury and MerCruiser boat engines. It is a high-quality replacement part manufactured by the original equipment manufacturer. This anode helps to protect your boat's engine from the corrosion caused by saltwater and other harsh environments. The anode is compatible with a number of different models and brands, including Mercury, MerCruiser, Reliance, Sea Shield, and Martyr. It is made from high-quality materials and is designed to provide long-lasting protection. With this anode installed on your boat, you can rest assured that your engine is protected from corrosion and other damage.