Martyr BRP / OMC Cobra Stern Drive Anode Kit – Magnesium | Freshwater (CMCOBRAKITM)
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Martyr BRP / OMC Cobra Stern Drive Anode Kit – Magnesium | Freshwater (CMCOBRAKITM)
The Martyr CMCOBRAKITM is a complete magnesium anode kit designed to replace all sacrificial anodes on BRP/OMC Cobra stern drives used in freshwater environments. The kit covers all major anode positions on the drive, providing comprehensive galvanic corrosion protection. Fastening hardware and installation instructions are included.
Magnesium is the correct anode material for freshwater use — it is more electrochemically active than aluminum or zinc in low-conductivity freshwater, providing effective galvanic protection where other anode materials may be too passive. Martyr Anodes are manufactured to OEM-equivalent specifications, making this a trusted replacement for the factory anodes.
Kit Contents
- CM984513 — Anode (x1)
- CM393023 — Anode (x1)
- CM431708 — Anode (x1)
- Fastening hardware and installation instructions included
Key Features
- Magnesium construction — correct material for freshwater use
- Complete 3-anode kit covers all positions on the BRP/OMC Cobra drive
- Includes fastening hardware and installation instructions
- OEM-quality Martyr Anodes construction
Compatible Applications
- BRP Cobra stern drives — freshwater use
- OMC Cobra stern drives — freshwater use
- Lakes, rivers, and other freshwater environments
Parts Desk Insights
This complete magnesium kit is the right choice for BRP/OMC Cobra stern drive owners who operate in freshwater lakes and rivers and want to replace all anodes at once during annual maintenance or haulout. Magnesium is essential for freshwater use; aluminum or zinc anodes in freshwater may not corrode fast enough to provide adequate galvanic protection, leaving the drive underprotected. The included hardware and installation instructions make this a convenient all-in-one solution. For the saltwater and brackish water version of this kit, see the aluminum version: Martyr BRP/OMC Cobra Stern Drive Anode Kit, Aluminum. For individual BRP/OMC outboard anodes, see the Martyr CM984513Z (Zinc), Martyr CM393023A (Aluminum), Martyr CM393023M (Magnesium), and Martyr CM393023Z (Zinc).
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 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.