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Martyr Anodes CMX11AL Aluminum Shaft Anode 2.5 Inch

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

CMX11AL
08/02/2036 11:11 AM
Sale Price

$38.21

In Stock (10+)

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Product Details

The Martyr Anodes CMX11AL is a high-quality aluminum shaft anode designed to provide critical corrosion protection for marine propulsion systems. This 2.5-inch shaft anode uses sacrificial aluminum alloy technology to protect your vessel's running gear from galvanic corrosion in saltwater and brackish water environments.

Key Features:

  • Premium aluminum alloy construction for maximum sacrificial protection
  • 2.5-inch diameter designed for shaft mounting applications
  • Engineered to meet or exceed U.S. Military Specification MIL-A-24779 (SH)
  • Protects shafts, struts, rudders, and other underwater metal components
  • Split design allows for installation without removing the propeller
  • Ideal for aluminum and magnesium outdrives, outboards, and stern drives

Martyr is the only manufacturer that offers a full line of sacrificial anodes that meet or exceed U.S. Military specifications. Regular inspection and replacement of shaft anodes is essential for maintaining optimal corrosion protection and extending the life of your marine drive system.

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great selection at reasonable price.

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Fast shipping, packaged with care. Product was exactly what I expected.<br>Overall great experience!

New shopper

It was a good price with fast delivery. They had the lowest price I found. My only comment was the shipping cost was more then I expected.

great price

Awesome experience

Easy shopping, but would be nice if the picture matched the model, it would have saved me 20 minutes of waiting on the phone for customer service.

Thanks! glad you had the parts!

This is a great place to get automotive accessories because their prices can't be beat. My packages did come in three different shipments even though I only received one tracking number, but I'm sure I could have got the others if I called. Overall great experience. Thanks.

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