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Martyr Anodes CMPNH5Z Autoprop Propeller Nut Anode with Nylon Insert

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

CMPNH5Z
06/03/2036 7:45 AM
Sale Price

$22.86

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The Martyr Anodes CMPNH5Z is a specialized propeller nut anode designed specifically for Autoprop feathering propellers. This sacrificial anode protects your valuable propeller hardware from galvanic corrosion in saltwater and brackish water environments.

Key Features:

  • Engineered specifically for Autoprop propeller systems
  • Includes integrated nylon insert for secure installation and vibration resistance
  • Manufactured from high-quality anode alloy for maximum corrosion protection
  • Sacrificial design protects expensive propeller components from galvanic corrosion
  • Precision-machined threads ensure proper fit and function

This propeller nut anode should be inspected regularly and replaced when approximately 50% depleted to maintain optimal corrosion protection. The H5 designation indicates compatibility with specific Autoprop propeller models. Regular replacement of sacrificial anodes is essential for protecting underwater metal components and extending the life of your propulsion system.

Didnt know it was shipping from the manufaturer and in route but showed up unexpected on a monday after a snowstorm so not bad

Website easy to use, excellent selection and pricing, don't see any room for improvement so far.

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Amazing service and tires arrived super fast!

good

So far so good.

cant wait

This place was great. Great service they really helped mr out and were fast and extremely helpful.

Price was way below anyone else. Delivered on time and as advertised

Just received my order! I placed the order Sunday night and received it on Tuesday, super fast shipping! The SS vent caps look great and arrived in perfect condition. Thanks!

Great prices, quick shipping! #808

Looking for this

if this is the right part, I will be very pleased

I have had good experiences so far with Autoplicity.

Shipped out fast. Prices are very competitive. Couldn't ask for more.

good shopping experience

first and last place i had too look had my part it was great

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