Volvo Penta Boat Anodes, Volvo Penta sterndrive anodes, Engine e Outdrive Anodes, Zinc anodes are suitable for Volvo Penta outdrives that operate in salt or brackish water, replacing deteriorated original zinc anodes. Volvo Penta sacrificial anodes protect the drive and propeller against corrosion which can damage drive, propeller, rudder and fittings. Anodes kits to suit all popular Volvo Penta systems.