CMP CME1D Zinc Pencil Anode with Brass Plug 3/8 NPT x 1/2 x 1-3/4

The CMP (Martyr) CME1D is a sacrificial zinc pencil anode designed to protect marine engine cooling systems from galvanic corrosion. The assembly consists of a zinc anode threaded into a brass plug, allowing for easy installation directly into engine cooling passages and heat exchanger ports.

Key Features:

• Material: High-purity zinc anode with brass plug
• Thread Size: 3/8 inch NPT
• Anode Dimensions: 1/2 inch outside diameter x 1-3/4 inch length
• Weight: 0.154 lbs (0.070 kg)
• Designed for saltwater use only
• Fits marine engine cooling systems including heat exchangers
• Meets or exceeds OEM anode specifications

Zinc is the preferred material for engine cooling system pencil anodes, and is still specified by leading marine engine manufacturers. Regular replacement of this wear item is essential to maintaining effective corrosion protection for your engine's internal cooling passages.