The Volvo Penta Anode Kit CM3858399KITM is a high-performance magnesium protection solution specifically engineered for Volvo Penta 3-blade folding propellers on D2-55 (A-F series) engines. Designed exclusively for freshwater use, this kit utilizes the high driving voltage of magnesium to effectively combat galvanic corrosion in low-conductivity water where zinc or aluminum would remain passive. The kit is lightweight at approximately 0.324 lbs (0.147 kg) and includes three individual CM3858286 anode segments, ensuring a complete and precise fit for the propeller hub. By acting as the primary sacrificial metal, it safeguards expensive drivetrain components from pitting and structural damage, maintaining the efficiency of your propulsion system.