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Martyr Anodes CM393023M Magnesium Anode for BRP OMC Johnson Evinrude Outboards

Manufacturer

Martyr Anodes

<h3>About Martyr Anodes</h3><p>When it comes to defending a vessel against galvanic corrosion, few names carry the authority of <strong>Martyr Anodes</strong>. A flagship brand within the <strong>CMP Group</strong>, Martyr has its roots in foundry operations that date back to the early 1900s in Vancouver, BC, growing from a local manufacturer into a globally recognized leader in marine cathodic protection. Today, the brand supplies boaters, commercial operators, and marine professionals worldwide with sacrificial anodes engineered to guard hulls, propellers, rudders, shafts, engines, and other submerged components from the relentless effects of corrosion.</p><h3>Three Alloys, Every Water Type</h3><p>What sets Martyr apart from competing anode manufacturers is its position as the only brand to offer all three protective alloys — zinc, aluminum, and magnesium — under a single product line. This matters because the correct alloy depends entirely on the water environment a vessel operates in. Zinc anodes are the classic choice for aggressive saltwater conditions, while aluminum anodes are preferred for saltwater and brackish environments, offering superior corrosion resistance with a reduced environmental footprint. Magnesium anodes are the go-to solution for freshwater use, delivering effective sacrificial protection without degrading too quickly. Whatever the operating environment, Martyr has an engineered solution to match.</p><h3>Military-Grade Manufacturing Standards</h3><p>Martyr does not cut corners on metallurgy. Every anode is pressure die-cast and manufactured to meet or exceed <strong>U.S. Military alloy specifications</strong>, using only high-purity metals. Each alloy batch is lab-tested with full certification and traceability available upon request. This rigorous quality management — operating under an ISO 9001 framework — ensures that each anode delivers consistent, long-lasting galvanic performance across a wide range of marine environments, from recreational pleasure craft to commercial vessels and naval applications.</p><h3>Anode Kits for Simplified Protection</h3><p>For boaters who want a complete, hassle-free maintenance solution, Martyr&rsquo;s <a href="/7452-martyr-anodes-anode-kits-200102">Anode Kits</a> offer pre-packaged sets engineered for specific engine models and boat types. Compatible with major marine engine brands including Yamaha, Mercury, Volvo, and MerCruiser, these kits take the guesswork out of corrosion protection and ensure every critical system receives optimal coverage in a single purchase.</p><h3>Sustainability at the Core</h3><p>Martyr and the CMP Group have made environmental stewardship a cornerstone of their mission. Traditional zinc anodes can contain cadmium, a metal that poses risks to aquatic ecosystems. Martyr actively advocates for the adoption of aluminum and magnesium alternatives that deliver equal or superior protection while minimizing harm to marine environments — embodying the brand&rsquo;s philosophy of &ldquo;Protect your boat, protect our waters.&rdquo; With over 1,000 anode types available and a catalog that fits virtually every major marine engine and boat model, Martyr remains one of the most comprehensive and trusted sources for marine corrosion protection in the world.</p>

Part Number

CM393023M
06/03/2036 9:40 AM
Sale Price

$10.73

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Martyr Anodes CM393023M is a direct replacement sacrificial anode designed specifically for BRP, OMC, Johnson, and Evinrude outboard motors. This magnesium anode provides superior corrosion protection by sacrificing itself to protect more valuable metal components in your engine's cooling system.

Key Features:

  • Magnesium alloy construction for optimal fresh water applications
  • Direct OEM replacement for part number 393023
  • Protects engine block and internal components from galvanic corrosion
  • Precision engineered to exact manufacturer specifications
  • Easy installation with proper mounting hardware included

Material Selection by Water Type:

  • Zinc anodes: Recommended for salt water use
  • Aluminum anodes: Recommended for brackish water use
  • Magnesium anodes: Recommended for fresh water use (this product)

Regular inspection and replacement of sacrificial anodes is essential for maintaining your outboard motor's longevity. Magnesium anodes should be replaced when they have corroded to approximately 50% of their original size to ensure continuous protection.

Products specifications

Description

Anode Block

Material

Magnesium

Great service and product. A+!

Order arrived quick and was as described.

First time ordering, but not the last. Everything perfect...Thanks

You have the lowest prices. To bad shipping is not free and discounts for Military veterans

Very fast shipping, received it Monday when I ordered it on Thursday. Thanks!

Awesome prices, free shipping makes me happy :)

It was easy.

Very speedy and in excellent shape. Easy to install and only took minutes. Autoplicity in my book is a great place to shop. <br><br>-Jason Chance<br> Cape Fair, MO

It was good!

Very pleased with all aspects of this transaction.

Went great very easy

So far everything is good. Price is good

So far my shopping experience was excellent. Looked up the parts, entered the quantity and they were on the way. Delivered on time as the order was placed

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