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Martyr Anodes CMX18 Streamlined Shaft Anode with Stainless Steel Allen Head Screw, Zinc

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

CMX18
06/03/2036 9:36 AM
Sale Price

$83.37

In Stock (10+)

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Usually delivered within 2 days

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Live-in-stock inventory

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Product Details

The Martyr Anodes CMX18 is a streamlined shaft anode designed to provide effective galvanic corrosion protection for propeller shafts on boats and marine vessels. Constructed from high-quality zinc alloy, this sacrificial anode protects underwater metal components by corroding preferentially, preventing damage to more expensive shaft and running gear.

Key Features:

  • Streamlined teardrop design minimizes drag and turbulence
  • Zinc alloy construction ideal for saltwater and brackish water applications
  • Stainless steel Allen head screw for secure, corrosion-resistant installation
  • Split collar design allows installation without removing the propeller
  • Precision engineered to MIL-SPEC standards
  • Compatible with standard propeller shaft sizes

Martyr is the only zinc anode manufacturer in North America that has been producing anodes for over 50 years. This CMX18 shaft anode delivers reliable protection against the damaging effects of electrolysis and galvanic corrosion, extending the service life of your vessel's critical underwater components. Regular inspection and replacement of sacrificial anodes is an essential part of marine maintenance.

Best Price! and quick shipping A++

great service

Wow, what a good company to deal with! I ordered my Brake Motive 0100 pressure brake bleeder and 2 days later it was here! I can't wait to test it out. The only thing they could improve on is having the ability to search for parts based on year, make and model of the vehicle. The website requires that I find component part numbers elsewhere and input them in, a pretty cumbersome and difficult process. Thanks again!

Fast Fast Fast!!!!

Recieved exactly what i wanted and and it only took 2 days to get here! will do business with again! A++++++

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Every time I use autoplicity its always a smooth transaction and great price. Thanks

good service so far

Couldn't choose any of my other amazon shipping addresses as my method of payment showed no payment method for any other address so I had to take shipment to my main address and now I have to drive the parts to where I need them 90 mins round-trip plus t

Good so Far

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