Mercruiser Alpha I Gen II Zinc Anode Kit | Martyr CMALPHAKITZ Martyr anode kit includes all replacement anodes needed to protect Mercruiser Alpha Generation II stern drives from corrosion in saltwater applications. Mercruiser Alpha I Gen II anode kit For Mercruiser Alpha I Gen II drives from 1991-present Kit includes CM762145Z trim tab anode, CM806105Z bearing carrier anode, CM821629Z housing plate, CM821631Z gimbal block anode, and (2) CM806189Z trim cylinder anodes Zinc anodes for 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