Martyr Anode – BRP / OMC / Johnson / Evinrude Outboard, Magnesium | Freshwater (CM393023M)
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Martyr Anode – BRP / OMC / Johnson / Evinrude Outboard, Magnesium | Freshwater (CM393023M)
The Martyr CM393023M is a magnesium sacrificial anode designed as a direct OEM-equivalent replacement for BRP, OMC, Johnson, and Evinrude outboard motors used in freshwater environments. It replaces OEM part number 393023 and provides reliable galvanic corrosion protection at the corresponding anode position on the lower unit.
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 anode.
Key Features
- Magnesium construction — correct material for freshwater use
- Direct replacement for OEM part number 393023
- OEM-quality Martyr Anodes construction
- Reliable galvanic protection for BRP/OMC/Johnson/Evinrude outboard lower units in freshwater
Compatible Applications
- BRP outboard motors — freshwater use, OEM ref. 393023
- OMC outboard motors — freshwater use, OEM ref. 393023
- Johnson outboard motors — freshwater use, OEM ref. 393023
- Evinrude outboard motors — freshwater use, OEM ref. 393023
- Lakes, rivers, and other freshwater environments
Parts Desk Insights
This is the freshwater magnesium variant of the 393023 anode position — the right choice for BRP/OMC/Johnson/Evinrude outboard owners who operate in freshwater lakes and rivers. Magnesium is essential for freshwater use; aluminum or zinc anodes in freshwater may not corrode fast enough to provide adequate galvanic protection, leaving the motor underprotected. For the same anode position in saltwater or brackish water, see the aluminum version: Martyr CM393023A Anode – BRP/OMC/Johnson/Evinrude, Aluminum. For other BRP/OMC/Johnson/Evinrude individual anodes, see the Martyr CM123009Z Anode (Zinc), Martyr 397768 Anode, Martyr 398331 Anode, Martyr 5007089 Anode, Martyr 984513 Anode, Martyr 984547 Anode, and Martyr 984547 Anode (alternate).
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.