CMP CMC01AL Limited Clearance Aluminum Shaft Anode 3/4 Inch

The CMP CMC01AL is an aluminum sacrificial shaft anode engineered specifically for boats with limited clearance between the propeller shaft and the hull or strut. Designed to protect a 3/4-inch diameter propeller shaft from galvanic corrosion, this anode delivers reliable cathodic protection in saltwater and brackish water environments.

Aluminum construction makes this anode the preferred choice for saltwater and mixed-water use, offering superior electrochemical potential compared to zinc alternatives. The low-profile, limited clearance form factor fits in tight spaces where standard collar anodes cannot.

Key Features:

• Material: Marine-grade aluminum alloy for optimal galvanic protection in salt and brackish water
• Shaft Size: Fits 3/4-inch (19mm) propeller shafts
• Limited Clearance Design: Low-profile form factor for tight installations between shaft and hull or strut
• Interlocking two-piece construction for easy installation and replacement without removing the shaft
• Hardware included: Allen head fasteners with lock washers for a secure, rattle-free fit
• UPC: 628309103033

The CMC01AL is part of the CMP Group's CMC limited clearance anode series, a trusted line of marine sacrificial anodes sold under the Martyr brand. Regular inspection and replacement of sacrificial anodes is essential to preventing costly underwater metal damage to shafts, rudders, and running gear.