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Martyr Anodes CMPNZB Prop Nut Anode Zinc Series B Replacement

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

CMPNZB
06/03/2036 10:22 AM
Sale Price

$10.19

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Martyr Anodes CMPNZB is a zinc prop nut anode designed to provide reliable galvanic corrosion protection for outboard and sterndrive propeller systems. This Series B replacement anode fits directly onto the propeller shaft, protecting critical underwater metal components from destructive electrolysis in saltwater and brackish water environments.

Key Features:

  • Manufactured from high-grade zinc alloy for effective corrosion protection
  • Series B configuration for compatibility with specific propeller shaft applications
  • Sacrificial anode design protects expensive drive components including the propeller shaft, lower unit, and prop hardware
  • Precision engineered to OEM specifications for proper fit and performance
  • Easy installation as a direct replacement during routine propeller maintenance

Martyr is a trusted name in marine corrosion control, meeting or exceeding military specifications MIL-DTL-18001K for zinc anodes. Regular inspection and replacement of prop nut anodes is essential for maintaining optimal corrosion protection and extending the service life of your outboard or sterndrive lower unit.

fine so far

Great

Great site. I received my product quickly and it was the product I ordered.

You seem to have the best price and your pictures help a lot. HOWEVER -- no place did my order say &quot;Mercury Grand Marquis 2003 *Passenger Side* Glass -- and that has me concerned because I have to go by make/model/yr and then picture alone!

I ordered a new clutch on June 12, and the item shipped the same day. Had the item on time as expected. They also beat all other retailers prices by a significant amount. Their shipping costs were also reasonable. The only issue I experienced is that it is virtually impossible to get order status from their Website if you do not have an account. Anytime I used the link provided in the order confirmation E-Mail would always return an error.

Great price, wicked fast shipping. Will order from these guys again!

Great prices, only wish you provided free shipping like a lot of other locations do!!!!

good

SO FAR IT HAS BEEN HASSLE FREE.

As always fast, easy and reliable

Great Prices and Simple Ordering!

Greatest web site i have been to in a long time. Great products, affordable prices, and my item wa shipped fast. I would highly recommend and i will be back.

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