CMP Anode Kits

CMP Anode Kits: Purpose-Built Marine Corrosion Defense

When saltwater, brackish tidal bays, or freshwater lakes threaten your boat's underwater metal components, a properly specified anode kit is your first and most critical line of defense. CMP has been engineering sacrificial anodes since the 1970s, when the company — rooted in a Vancouver foundry dating back to the early 1900s — pivoted its non-ferrous metal casting expertise squarely toward the commercial and recreational marine market. Today, CMP is recognized as one of the world's largest producers of die-cast marine anodes, and their pre-packaged anode kits represent the most convenient expression of that deep engineering heritage.

What Sets CMP Anode Kits Apart

CMP's anode kits are manufactured and distributed under the Martyr Anodes brand — CMP's dedicated corrosion-protection label — and are pressure die-cast to strict quality standards backed by an ISO 9001 Quality Management System. Every alloy is chemically tested regularly in CMP's in-house labs and manufactured to meet current US Military specifications, ensuring consistent electrochemical performance batch after batch.

One of CMP's most significant distinctions in this category is breadth of alloy coverage. CMP offers kits in all three essential sacrificial metals:

• Aluminum (Premium) – Engineered to meet or exceed US Military Specification MIL-DTL-24779C(SH), aluminum anodes perform in both salt and brackish water, outlasting traditional zinc. They are the go-to choice for boaters who trailer across multiple water types.
• Zinc (Traditional) – Formulated to meet or exceed MIL-DTL-18001L, zinc kits are the time-tested solution for saltwater applications.
• Magnesium (Fresh) – Manufactured to meet or exceed specification AZ91D, magnesium anodes are the only alloy proven to deliver effective cathodic protection in freshwater environments, where zinc anodes can passivate and stop working entirely.

Critically, CMP is the only company with the capability to produce cadmium-free anodes that perform across all three boating water types — a meaningful advantage for environmentally conscious boaters and for those navigating diverse waterways throughout the season.

Complete Kits for Popular Outboard Brands

CMP's anode kits are designed around specific engine makes and models, taking the guesswork out of corrosion protection. Kits are available for Mercury outboards in both aluminum and zinc alloys, with each kit including all fastening hardware required for a complete installation. The aluminum Mercury kits meet MIL-A-24779(SH) specifications and are engineered specifically for salt and brackish water use, while the zinc Mercury kits meet US Mil-A-18001K specifications for saltwater service.

Whether you're maintaining a weekend runabout, a serious offshore fishing boat, or a vessel that moves between freshwater lakes and coastal inlets, CMP's approach — matching the right alloy to the right water type and packaging every required component together — means you spend less time sourcing parts and more time on the water.

Why Choose CMP for Anode Kits

• Pressure die-cast construction to ISO 9001 quality standards
• All alloys manufactured to current US Military specifications
• Cadmium-free formulations across all three alloy types
• Complete kits include all hardware for a full, 100% installation
• Backed by decades of anode manufacturing expertise dating to the 1970s

Explore the full range of CMP marine products or browse all available anode kits to find the right corrosion protection solution for your vessel.