Zinc Engine Anode E0 5/16″ UNC CMT-EZ0

The CMT-EZ0 is a marine-grade zinc pencil engine anode, E0 style with 5/16″ UNC thread, providing sacrificial cathodic protection for internal engine cooling passages and heat exchangers in saltwater applications. This is the anode rod only reuses the existing brass plug housing.

Key Features

• Zinc alloy optimized for saltwater corrosion protection
• E0 pencil anode with 5/16″ UNC thread smallest in the EZ series
• Anode rod only reuses existing brass plug
• Protects heat exchangers, cooling passages, and engine block
• Direct replacement for E0-style pencil anodes
• Easy inspection and replacement during routine service

Engine Compatibility

Designed for inboard marine engines with E0-style pencil anode ports. Commonly used on:

• MerCruiser
• Volvo Penta
• Yanmar
• Crusader
• Westerbeke / Universal
• Other heat exchanger-cooled inboard engines

Installed in:

• Heat exchangers
• Engine block cooling ports
• Cooling system passages

Serial Number Fitment Notice

• Confirm thread size: 5/16″ UNC
• Verify anode length and diameter match existing E0 anode
• Confirm application requires anode-only (not complete plug assembly)

When This Part Needs Replacement

• Anode is 50% or more consumed
• Excessive scaling or buildup on anode body
• Reduced cooling efficiency or overheating symptoms
• Routine maintenance interval

Installation Notes

• Remove plug and inspect anode regularly
• Ensure clean threads and proper sealing on plug
• Do not over-tighten risk of thread damage
• Do not use thread sealant that could insulate the anode
• Replace before full depletion to avoid debris in cooling system

Alternate / Cross-Reference Part Numbers

• Camp Company: CMT-EZ0
• Martyr: CMEZ0
• Common reference: E-0 / E0Z
• Complete assembly (with plug) versions available
• Larger sizes: EZ2 (7/16″ UNC), EZ3 (1/2″ UNC)

Parts Desk Insight

The E0 is the smallest pencil anode in the EZ series found in tighter cooling ports on smaller inboard engines. Because of its small mass, it depletes faster than larger anodes. Check it at every oil change and keep a spare on board. Dont let it disappear completely debris in the cooling system is an expensive problem.

Shipping

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