Mercury Skeg Anode Zinc | Martyr CM31640Z
Martyr zinc anode designed to protect gearcase from corrosion salt water.
- Mercruiser trim tab anode
- Zinc anode for salt water applications
- Used on many Mercury /Mariner outboards 35hp and above
- Used on all MerCruiser excluding Bravo drives
- Zinc replacement for Mercury’s aluminum anode p/n 31640Q4
- For fresh water application see p/n CM31640M
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