CMP CMR05 Zinc Rudder Trim Tab Anode Anodes/Zincs - 5-1/8

The CMP CMR05 is a high-quality sacrificial zinc anode designed specifically for rudder and trim tab protection in saltwater marine applications. This 5-1/8 inch diameter disc-style anode provides essential cathodic protection against galvanic corrosion, extending the life of your boat's underwater metal components.

Key Features:

• Pressure die-cast construction using mil-spec MIL-A-18001 zinc alloy for superior corrosion resistance
• 5-1/8" outside diameter with 7/8" thickness provides substantial protection
• Sold as two halves held together by included stainless steel Allen screw for easy underwater installation
• Designed for saltwater use only - provides optimal protection in marine environments
• Bolt retaining washers prevent the anode from falling off during use
• Special alloy formulation ensures inward erosion for consistent performance

Sacrificial anodes work by being more electrically negative than other metals on your vessel, causing them to corrode first and protecting valuable rudder and trim tab components from galvanic corrosion. The CMR05 should be replaced when approximately 70% eroded to maintain optimal protection. Compatible with most marine rudder and trim tab applications requiring 5-1/8" disc-style anodes.