Zinc Cavitation Plate Anode for Volvo Penta SX-DPSTecnoseal Zinc Cavitation Plate Anode for Volvo Penta SX-DPS 3855411.Volvo Part: 3855411. For use in Salt water. Tecnoseal Zinc Cavitation Plate Anode f/Volvo Penta SX-DPS$27.75PriceOut of Stock