The CMP CMC01 is a zinc limited clearance shaft collar anode designed for cathodic protection of boat propeller shafts in saltwater and brackish water environments. With a 3/4-inch inner diameter, this sacrificial anode fits tightly around the shaft to protect it from galvanic corrosion, making it an essential component for any vessel operating in corrosive marine environments.
Engineered by CMP Group under the Martyr Anodes line, the CMC01 features an interlocking two-piece collar design that splits apart for easy installation around the shaft — no need to remove the shaft from the vessel. The anode is constructed from high-quality zinc alloy, the preferred material for saltwater and brackish water applications. Zinc anodes corrode sacrificially, protecting the more valuable metal components of your drivetrain from electrolytic damage.
Key Features:
- 3/4-inch (ID) limited clearance shaft collar anode
- Zinc alloy construction — ideal for saltwater and brackish water use
- Interlocking split-collar halves for easy underwater installation
- Bolt retaining washers prevent the anode from falling off during installation
- Full 100% circular shaft contact for maximum cathodic protection coverage
- Extra alloy material around fasteners extends usable anode life
- Available stainless steel hardware options: Allen head or slotted head with lock washers and bolt retaining washers
- UPC: 628309103033
Cross-reference part numbers: C-1, C1, MDC-1, MDC1, 2093, LC-0750, RC-0750Z, CAMC1, BSM34A. The CMC01 zinc shaft anode is the standard choice for protecting 3/4-inch propeller shafts from corrosion and is a direct replacement for comparable OEM collar anodes.
