Zinc Shaft Collar Anode 30mm ID – CMT-C30
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You have 30 days to request a return. All sale items are final sale.
Martyr Zinc Shaft Collar Anode 30mm ID – CMT-C30
Sacrificial zinc donut/collar anode for 30mm metric propeller shafts. Slides over the shaft to protect the shaft, cutlass bearing, and adjacent hardware from galvanic corrosion in saltwater and brackish water service. Common on European and import inboard and outboard applications.
- Inner diameter: 30mm — fits 30mm metric propeller shafts
- Zinc construction — saltwater and brackish water; not for freshwater
- Secured with set screws — confirm inclusion or source separately before ordering
- Confirm shaft diameter before ordering
- SKU: CMT-C30 | Alt: CMTC30
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.