Description
MARTYR Zinc Pencil 3/4Npt X 3/4 X 3-5/8 – CME5 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 CME5; the store SKU may omit or alter MARTYR’s leading CM prefix.
Fitment guidance: General-purpose engine-cooling pencil anode sold by thread and dimensions rather than for one specific engine model. Confirm the 3/4 in NPT plug, 3/4 in anode diameter and 3-5/8 in length against the engine / heat-exchanger 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: CME5
- Store SKU: CMT-E5
- Anode Type: Pencil/Engine Anodes
- Material: Zinc
- Recommended Water Type: Salt Water
- Compatibility / Applications: General-purpose engine-cooling pencil anode sold by thread and dimensions rather than for one specific engine model. Confirm the 3/4 in NPT plug, 3/4 in anode diameter and 3-5/8 in length against the engine / heat-exchanger manual.
- Alloy / Standard: MIL-DTL-18001L
- Nominal Weight: 0.29 kg (0.639 lb)
- Overall Dimensions: 9.2 x 1.9 x 1.9 cm (3.62 x 0.75 x 0.75 in)
- Application / Fitment: Zinc Pencil 3/4Npt X 3/4 X 3-5/8
- Thread: 3/4 NPT


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