Description
MARTYR Zinc Anode Only For E5 1/2" Unc – CMEZ5 is a zinc sacrificial marine anode for pencil/engine anodes. It is intended to corrode sacrificially so the protected underwater metal component is preserved.
Water application: Salt Water. Overall dimensions are provided in both centimetres and inches for fitment comparison. Confirm fitment with the full MARTYR manufacturer part number CMEZ5; the store SKU may omit or alter MARTYR’s leading CM prefix.
Fitment guidance: Replacement zinc rod for the corresponding MARTYR engine-cooling pencil-anode assembly. This size is sold by thread, diameter and length rather than for one specific engine model; match all dimensions and thread to the existing assembly or engine manual.
Features
- Protects engine cooling passages, heat exchangers, and raw-water-system components from galvanic corrosion.
- Thread size, anode diameter, and anode length are fitment-critical on pencil/engine anodes.
- Designed to protect engine cooling passages, heat exchangers, or related seawater-system components from galvanic corrosion.
- Thread and anode dimensions are fitment-critical; confirm the full MARTYR part number before installation.
- Zinc alloy application: Salt Water.
Specifications
- Brand: MARTYR Anodes
- Manufacturer Part Number: CMEZ5
- Store SKU: CMT-EZ5
- Anode Type: Pencil/Engine Anodes
- Material: Zinc
- Recommended Water Type: Salt Water
- Compatibility / Applications: Replacement zinc rod for the corresponding MARTYR engine-cooling pencil-anode assembly. This size is sold by thread, diameter and length rather than for one specific engine model; match all dimensions and thread to the existing assembly or engine manual.
- Alloy / Standard: MIL-DTL-18001L
- Nominal Weight: 0.186 kg (0.41 lb)
- Overall Dimensions: 9.2 x 1.9 x 1.9 cm (3.62 x 0.75 x 0.75 in)
- Application / Fitment: Zinc Anode Only For E5 1/2" Unc
- Thread: 1/2 UNC


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