Volvo Penta 290DP Aluminum Anode Kit | Martyr CM290DPKITA Martyr anode kit includes all anodes needed to protect Volvo Penta 290DP stern drives from corrosion in salt and brackish water. Volvo Penta stern drive anode kit Fits Volvo Penta 290 Duoprop outdrives Kit contains CM875821A prop shaft anode and CM852835 transom shield anode Aluminum anode is 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