Propeller Anodes

Start with the outboard or drive model and the prop or hub style, then identify the anode type fitted, often a ring or hub anode. Measure the key dimensions such as inner diameter, outer diameter, and thickness, and compare to the listing. Confirm how it fixes, clamp style or bolted. If you can share a photo of the prop anode area and the old anode next to a ruler, it is usually enough to confirm the correct match.

You can replace a single anode if that is the one that is worn, but it is worth checking the rest of the system. If other anodes are also part-worn, replacing them together can give more consistent protection. If you replace only one, the new anode may wear faster if it is doing more of the work. A practical approach is to replace the worn prop anode and inspect the rest, then plan a full set replacement at the next service.

Loose fitting is usually caused by incorrect sizing, wrong fixing style, or poor seating. Confirm the inner diameter and profile match your hub and that the fixing method is correct. Uneven wear can also indicate poor contact or imbalance in the system’s anode coverage. Clean the seating surface and tighten fixings evenly. If wear is unusually fast, consider electrical factors and check for missing anodes elsewhere on the system.