Duff CM55989Z Mercury/Mercruiser Zinc Button Anode | 4Boats

Duff CM55989Z zinc button anode designed for Mercury outboards and Mercruiser sterndrives to provide sacrificial corrosion protection.

• Part: CM55989Z
• Brand: Duff
• Material: Zinc (sacrificial anode)
• Fits: Mercury outboards & Mercruiser sterndrives
• Style: Button anode for lower units and trim/tilt housings
• Suitable for saltwater and brackish water
• Sold individually — check compatibility with your model

Replace worn anodes regularly to maintain protection; inspect before each season and fit following manufacturer guidance.