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CMP CMR03AL Martyr Aluminum Rudder / Trim Tab Disc Anode with Allen Screw

Manufacturer

CMP

<h3>CMP Group: A Global Leader in Marine Protection and Hardware</h3><p>For boaters who take vessel maintenance seriously, <strong>CMP Group Ltd.</strong> is a name that carries real weight. Founded originally as a foundry in Vancouver, British Columbia, CMP has evolved over decades into a global manufacturing powerhouse in the recreational, commercial, and military marine markets. Today, the company operates manufacturing facilities across Canada, the United States, Italy, and China, delivering innovative products to boaters and marine professionals around the world.</p><p>CMP's product philosophy centers on one core principle: giving mariners reliable, proven solutions that stand up to the harshest environments on the water. From corrosion control and ground tackle to steering systems and dock accessories, CMP covers virtually every aspect of marine maintenance and outfitting through a family of respected sub-brands.</p><h3>Martyr Anodes: Setting the Standard in Corrosion Protection</h3><p>The brand's most recognized product line is <strong>Martyr Anodes</strong> — widely considered one of the most comprehensive sacrificial anode programs in the marine industry. Galvanic corrosion is an ever-present threat to any vessel with submerged metal components, and Martyr's extensive catalog addresses it head-on. Whether your boat operates in saltwater, brackish water, or freshwater, CMP offers the right alloy for the job.</p><p>The <a href="/6004-cmp-anodeszincs-200103">Anodes/Zincs</a> lineup covers everything from shaft anodes and hull plates to trim tab and outdrive anodes, available in zinc, aluminum, and magnesium formulations. Each anode is precision pressure die-cast to ensure a consistent fit and reliable electrochemical performance throughout its service life. With over 1,000 anode types in the catalog, finding the right match for your engine or hull configuration is straightforward.</p><p>For mariners who prefer a more streamlined maintenance approach, CMP's <a href="/6004-cmp-anode-kits-200102">Anode Kits</a> package all the anodes needed for a specific engine or sterndrive into a single, ready-to-install set. Kits are available for many of the most popular outboard and sterndrive systems, including MerCruiser Bravo series drives, Volvo Penta units, and others, making seasonal anode replacement far more convenient.</p><h3>Ground Tackle, Shackles, and Vessel Hardware</h3><p>Beyond corrosion protection, CMP Group has long been a trusted source for marine hardware and ground tackle. The company's <a href="/200937-shackles-cmp-6004">Shackles</a> are part of a broader chain, shackle, and swivel product line engineered to perform under the demanding loads of anchoring, mooring, and rigging applications. Built to marine-grade standards, CMP shackles are designed to deliver the security and load-bearing reliability that boat owners depend on when conditions get rough.</p><h3>Marine Engine Maintenance Products</h3><p>Keeping a marine engine running cleanly is just as important as protecting its underwater hardware. CMP's Oil Change Systems &amp; Pumps provide an efficient way to extract used engine oil without the mess and inconvenience of traditional drain methods — a particular advantage in the tight confines of a vessel's engine compartment. Complementing this, CMP's <a href="/200727-ob-io-coolingwater-pumps-cmp-6004">O/B &amp; I/O Cooling/Water Pumps</a> support proper engine cooling on outboard and inboard/outboard systems, helping prevent overheating and extend engine longevity.</p><h3>Why Choose CMP?</h3><ul style="list-style:disc"><li>Decades of marine manufacturing heritage rooted in Vancouver, BC</li><li>Global distribution network serving recreational, commercial, and military marine markets</li><li>Martyr Anodes catalog of 1,000+ anode types covering all major engine and vessel brands</li><li>Products engineered to meet strict military and international marine standards</li><li>Full spectrum of marine solutions from corrosion protection to steering, docking, and anchoring</li></ul>

Part Number

CMR03AL
09/12/2036 4:30 AM
Sale Price

$11.10

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The CMP Martyr CMR03AL is an aluminum sacrificial disc anode designed for use on rudders and trim tabs. Engineered to provide reliable cathodic protection, this anode mounts securely using a stainless steel Allen head screw and is precision pressure die-cast for consistent performance and even consumption throughout its service life.

Alloy & Water Type: The CMR03AL is cast from a premium aluminum alloy, making it ideally suited for use in salt water and brackish water environments. Aluminum anodes deliver better galvanic performance and longer-lasting protection compared to traditional zinc anodes, and unlike magnesium, they are safe for saltwater and brackish applications.

Key Features:

  • Aluminum alloy construction for superior saltwater and brackish water corrosion protection
  • Disc-style design fits rudder and trim tab mounting applications
  • Stainless steel Allen head screw included for secure installation
  • Pressure die-cast for consistent alloy composition and even sacrificial consumption
  • Manufactured to meet US Military Alloy Specifications for aluminum anodes
  • Part of the Martyr Anodes lineup by CMP (Canadian Metal Pacific)

Sacrificial anodes like the CMR03AL protect underwater metal components by corroding preferentially, sparing critical hardware such as rudders, trim tabs, and drive components from galvanic damage. Regular inspection and timely replacement of worn anodes is essential to maintaining full corrosion protection on any marine vessel.

Great so far,will see if i get it in the 2 day shipping.

Quick

Great service. Thanks

Always easy to find parts and always the best prices! They keep me coming back! Thanks THM (and Autoplicity)!!

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Fast delivery, best price online, would recommend to everybody.

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