CMP CMC06 Limited Clearance Zinc Shaft Anode 1-1/8" ID x 3.19" OD

The CMP CMC06 is a zinc sacrificial shaft anode engineered for propeller shafts with limited clearance — ideal when the distance between the keel or strut and the propeller is too short to accommodate a standard streamlined anode. Formulated specifically for saltwater use, this collar-style anode provides reliable cathodic protection against galvanic corrosion on iron and steel shafting.

Key Features:

• Saltwater-rated zinc alloy construction for effective galvanic corrosion protection
• Low-profile collar design fits tight shaft clearances where standard streamline anodes will not
• Interlocking halves for secure, full-circumference shaft contact and maximum protective coverage
• Allen head bolt with lock washer and bolt-retaining washer included — prevents anode loss during use
• 1-1/8" inner diameter for precise shaft fit and optimal contact
• 3.19" outer diameter x 1-1/4" height compact profile for restricted installation areas
• Compatible with limited clearance shaft and rudder anode applications

Includes all necessary stainless steel hardware for installation. A low-cost, dependable solution for protecting propeller shafts, stern tubes, and associated hardware on saltwater vessels.