CMP CMEZ00 Zinc Pencil Anode 1/4" OD x 2.06" with 1/4" UNC Thread

The CMP CMEZ00 is a zinc pencil anode designed to protect engine cooling systems from galvanic corrosion in saltwater environments. These small but critical sacrificial anodes are installed directly into the engine's cooling passages, where they corrode preferentially to protect surrounding metal components from electrolytic damage.

Key Features:

• Material: Zinc — the industry-standard sacrificial metal for saltwater applications
• Outside Diameter: 1/4 inch
• Length: 2.06 inches
• Thread Size: 1/4 inch UNC (Unified National Coarse)
• Application: Engine cooling system protection
• Environment: Saltwater use only

Zinc pencil anodes like the CMEZ00 should be inspected regularly and replaced when approximately 50% depleted to ensure continuous corrosion protection. Using the correct sacrificial anode material is critical — zinc anodes are specifically formulated for saltwater use and should not be substituted with aluminum or magnesium anodes in saltwater applications.