Volvo Penta SX-A/DPS Aluminum Anode Kit | Martyr CMSXAKITA Martyr anode kit includes replacement anodes to protect Volvo Penta SX-A and DPS model stern drives from corrosion in salt and brackish water. Volvo Penta stern drive anode kit For Volvo Penta SX-A and DPS model drives Kit includes CM3841427A transom block anode and 3883728A gearcase anode Aluminum anodes for use in brackish and salt water applications Martyr anodes are made of a high purity specialized alloy based on the US Mil Spec Supplied with mounting hardware for anodes