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Martyr Anodes CMT21 Tear Drop Zinc Hull Anode 5" x 2" x 0.8"

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

CMT21
06/03/2036 8:33 AM
Sale Price

$11.98

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Martyr Anodes CMT21 is a tear drop shaped zinc hull anode designed to provide superior corrosion protection for underwater metal components in saltwater marine environments. This streamlined anode configuration is engineered to minimize drag while maximizing galvanic protection for hulls, rudders, trim tabs, and other submerged hardware.

Key Features:

  • Tear drop profile reduces water resistance and turbulence
  • Zinc alloy formulation specifically engineered for saltwater use
  • Compact 5" length x 2" width x 0.8" height dimensions fit tight spaces
  • Cast from high-purity zinc meeting military specification MIL-A-18001K
  • Pre-drilled mounting holes for secure installation
  • Provides sacrificial protection against galvanic corrosion

Martyr anodes are manufactured to stringent quality standards and use alloys that meet or exceed all military specifications. The tear drop design makes this anode ideal for applications where hydrodynamic efficiency is important. For brackish water applications, consider aluminum anodes; for freshwater use, magnesium anodes are recommended.

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Excellent experience. Shipped when they said it would ship. Very good web site to navigate through.<br>Thank you, Autoplicity

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I think I had to remind them to ship my item but once I did it shipped the next day. The package had the wrong label on it so I wondered if I got the right item but I did and all is well.

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