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Martyr Anodes CMC12 Limited Clearance Shaft Anode with Stainless Steel Allen Head, 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

CMC12
06/03/2036 9:32 AM
Sale Price

$34.20

In Stock (10+)

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Usually delivered within 2 days

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The Martyr Anodes CMC12 is a specialized limited clearance shaft anode designed for marine applications where space is restricted. This zinc anode provides effective galvanic corrosion protection for propeller shafts in tight installations where standard shaft anodes won't fit.

Key Features:

  • Limited clearance design for tight spaces between shaft and hull
  • Zinc alloy construction for saltwater protection
  • Stainless steel Allen head screw for secure installation and easy removal
  • Precision-machined to fit snugly on propeller shafts
  • Provides sacrificial protection against galvanic corrosion

This shaft anode is engineered to protect your vessel's running gear by corroding preferentially to more expensive metal components. The low-profile design makes it ideal for installations with minimal clearance, while the Allen head fastener ensures reliable mounting and simplified maintenance.

Easy web site, no hassel.

Quick and easy so far

GLAD YOU HAVE IT IN STOCK

Great prices. Easy to navigate around website. Have what i need in stock

Very pleasant.

Was too easy

Easy shopping

Great price even after shipping cost added I have installed them in my truck bed behind the cab, Looks like it goes all the way across like a full across the bed box, but I can reach everything from the ground. Love it.

Great Price, Check out was easy with amazon, no hidden Charges. Will do business here again

great

Was going to also order TCI-618008 with this purchase but the free shipping didn't apply? Just thought you could add it to the same free shipping box.

Found what I was looking for, a hard to find part. It arrived in good time and in good condition!

Good buy , no problem!

So far so good

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