Beneteau Replacement Prop Nut Zinc Anode, 25mm Shaft
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Sea Shield Marine Beneteau Replacement Prop Nut Zinc Anode, 25mm Shaft
Designed specifically for Beneteau vessels with 25mm metric propeller shafts, the Sea Shield Marine BPN-25MM is a precision zinc replacement prop nut anode that fits over the corresponding bronze shaft nut to deliver continuous cathodic protection to the propeller and shaft. With an outside diameter of 1.31" and a weight of just 0.22 lbs, this compact anode installs with minimal impact on shaft balance while providing meaningful sacrificial protection in salt water. A cast-in stainless steel mounting insert ensures improved electrical bonding and prevents the anode from backing off the shaft nut even as the zinc is consumed.
Conforming to military specification MIL-A-18001, the zinc alloy is formulated specifically for marine cathodic protection applications. The BPN-25MM includes a replacement mounting screw, providing everything needed for a complete swap. Manufactured in California, USA, this anode is designed for use with the adapter assembly that threads onto the shaft, enabling tool-friendly installation and replacement. Regularly replacing prop nut anodes is a low-cost step that meaningfully extends the service life of both the propeller and the propeller shaft on Beneteau sailboats and motorboats.
Key Features
- Zinc
- Mil-Spec: MIL-A-18001
- For use in: Salt Water
- Shaft Diameter: 25mm
- Outside Diameter: 1.31"
- Weight: 0.22 lbs
- Made in: USA
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