CMP CMR04 5 Inch Zinc Rudder Anode with Allen Screw

The CMP CMR04 is a premium-grade sacrificial zinc anode designed to protect boat rudders and trim tabs from corrosion in saltwater and brackish water environments. This disc-style anode provides critical cathodic protection by sacrificing itself to prevent galvanic corrosion damage to expensive metal components on your vessel.

Key Features:

• 5-inch outside diameter disc design for optimal coverage and protection
• High-purity zinc alloy construction manufactured to US Military specifications
• Pressure die-cast construction ensures consistent quality and performance
• Includes stainless steel Allen head screw for secure installation
• Pre-drilled mounting holes for easy do-it-yourself installation
• Specifically designed for rudder and trim tab applications

Galvanic corrosion occurs when dissimilar metals are submerged in saltwater, creating electrical currents that cause metal deterioration. The CMR04 anode protects your rudder by becoming the sacrificial metal in this process, corroding in place of your valuable boat components. Regular inspection and replacement of sacrificial anodes is essential maintenance for any saltwater vessel to prevent costly corrosion damage to rudders, trim tabs, shafts, and other underwater metals.