Quicksilver 97-806189Q-1 Anode KitQuicksilver Genuine OEM Mercury-Mercruiser Fits the trim cylinder arm/rod for MerCruiser Alpha One Gen II drives. Inspect annually. Easy to replace. Attaching hardware kit included.Product Features Each anode comes with attaching hardware for fast and easy replacement with common tools; Inspect anodes periodically for best protection and replace when seeing signs of corrosion or pitting to help keep your maintenance costs down; MerCruiser cast aluminum anodes meet or exceed mil-spec MIL-A-24779(SH) providing longer lasting protection than zinc anodes and are for use in fresh or saltwater; Produced to meet Mercury Marine original equipment manufacturer specifications to best protect your MerCruiser Alpha One drive and engine; Application: Fits Alpha One Gen II drives.