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Martyr Anodes CMR01M Rudder/Trim Tab Anode with Stainless Steel Allen Head Screw

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

CMR01M
06/03/2036 8:36 AM
Sale Price

$6.51

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 CMR01M is a marine-grade sacrificial anode specifically designed for protecting rudders and trim tabs from galvanic corrosion. This anode features an integrated stainless steel Allen head screw for secure, flush mounting on underwater metal surfaces.

Key Features:

  • Magnesium alloy construction for superior protection in fresh and brackish water
  • Includes stainless steel Allen head mounting screw for easy installation
  • Low-profile design minimizes drag on rudders and trim tabs
  • Sacrificial protection extends the life of expensive underwater components
  • Meets or exceeds military specification MIL-A-21412

Martyr anodes are engineered to provide reliable galvanic protection for marine propulsion systems and underwater hardware. Regular inspection and replacement of sacrificial anodes is essential for preventing costly corrosion damage to rudders, trim tabs, and other submerged metal components.

Great product as described but I did have to repaint them because there was some rust showing through the paint

Excellent everything went well thank you

Delivered on time as ordered.

All good but rcvd wrong item. Working with them for correcting the problem

Excellent, rapid, free shipping

Fast shipping, very happy with product.

Best Price on this product that I've found. Thank you Unfortunately I'm going to have to return the item since it won't fit my application.

Good price

Cool

thanks

did not see if delivery would be Wed July 22?

Very easy to use and great prices

Fast Shipping. Hard to find item. Thanks

Easy transaction.

Found what I needed. Order process was simple enough. Good experience

Good price, the item was drop-shipped from the manufacture. I ordered it on a Friday and I got an e-mail on tuesday saying it was shipped.

Great site Fast service and low price.

excellent company with great prices and even better customer service. my order arrived, and too my surprise i found that it was not the product i had ordered. the customer service was prompt and i was informed that unknown to autoplicity, the product i ordered was discontinued by the manufacturer and what i recieved was their replacement. this was all unknown to autoplicity and they apoligized sincerely and have rectified the issue very much to my satifaction. the product itself arrived in perfect condition and meets or exceeds my expectations. i will look forward to shopping with autoplicity again due to their great prices and excellent customer service.

Very easy order to place, can't wait to get my part in!!thanks

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