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Martyr Anodes CM983494M Horseshoe Anode for Johnson/Evinrude Outboards

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

CM983494M
06/03/2036 8:38 AM
Sale Price

$20.36

In Stock (5)

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Usually delivered within 2 days

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Product Details

The Martyr Anodes CM983494M is a horseshoe-style sacrificial anode designed specifically for Johnson and Evinrude outboard motors. This anode protects critical engine components from galvanic corrosion by sacrificing itself to protect more valuable metal parts in your motor.

Key Features:

  • Horseshoe configuration designed for Johnson/Evinrude mounting
  • Available in three alloy options to match your water conditions
  • Zinc alloy for saltwater applications
  • Aluminum alloy for brackish water environments
  • Magnesium alloy for freshwater use
  • Direct replacement for OEM part number 983494
  • Precision-cast to ensure proper fit and maximum protection

Sacrificial anodes are essential for protecting your outboard motor's lower unit, trim tabs, and other underwater metal components from destructive galvanic corrosion. Choosing the correct alloy for your water type ensures optimal protection and performance. Regular inspection and replacement of worn anodes is critical to maintaining your engine's longevity.

great product at a great price

So far so good. First time to buy from here

So far found what I've been looking for so I'm satisfied currently

fast and easy

Beat price. Super fast processing and shipping. Will shop there again.

easy checkout and part in stock at the lowest price

Easily had the best prices for the Bilstein shocks I ordered from them. Had a mix up in the delivery but were great at fixing my problem as fast as possible. Will do business with them again!

Good very good

Very quick and easy!!

Found the best price and was pleasantly surprised by the speed of shipping. No tracking info up front, but customer service was able to provide and was very friendly. Buy with confidence and don't look back!

- Updated review -<br>Autoplicity.com contacted me after my original review and admitted to making a mistake with my order. They have refunded my shipping and I am happy now.<br><br>- Original review -<br>After 18 days the part finally arrived. The filter appears to have been sent directly from K&N, but I ordered on the 20th of June, yet the packing date that K&N Engineering Inc. shows is July 3rd.

It was easy and a painless shopping experience

Very fast shipping and price is rite

Item arrived in good condition and in a timely manner.

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