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MARTYR
Engine Cooling System “Pencil” Anodes

Protect your engine against galvanic corrosion by changing its anode regulary.

Anodes may be purchased as a complete assembly (anode with brass plug) or as a replacement anode only. Threads for replacement anodes (which screw into the plug) are “NPT.” Outside threads for plugs (which screw into the engine block) are “UNC”. “Length” refers to visible portion of anode when installed in plug. Offered in zinc alloy only.

Product Models
Description WM Model # MFG Part # Availability Price Quantity  
Anode with Plug, Length: 1 1/8", Diameter: 3/4", NPT: 3/8", UNC: 8mm (Fits Yanmar) 593501 CM272100200300Z
In stock online.

$4.99

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Anode with Plug, Length: 1 3/4" (45mm), Diameter: 3/8" (10mm), NPT: 1/4", UNC: 5/16" 332155 CME0
In stock online.

$6.99

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Anode with Plug, Length: 2" (51mm), Diameter: 1/4" (6mm), NPT: 1/8", UNC: 1/4" 519017 CME00
In stock online.

$6.99

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Anode with Plug, Length: 2" (45mm), Diameter: 1/2" (13mm), NPT: 3/8", UNC: 3/8" 194274 CME1
In stock online.

$10.49

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Anode with Plug, Length: 1 3/4" (45mm), Diameter: 1/2" (13mm), NPT: 3/8", UNC: 3/8" 6670848 CME1D
Ships from vendor

$15.99

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Anode with Plug, Length: 1 1/2" (38mm), Diameter: 1/2" (13mm), NPT: 3/8", UNC: 3/8" 6670855 CME1E
Ships when available.

$4.89

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Anode with Plug, Length: 1 1/4" (32mm), Diameter: 1/2" (13mm), NPT: 3/8", UNC: 3/8" 6670863 CME1F
In stock online.

$5.79

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Anode with Plug, Length: 1" (25mm), Diameter: 1/2" (13mm), NPT: 3/8", UNC: 3/8" 6670871 CME1G
In stock online.

$12.49

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Anode with Plug, Length: 2" (51mm), Diameter: 3/8" (10mm), NPT: 3/8", UNC: 7/16" 593485 CME1H
In stock online.

$10.99

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Anode with Plug, Length: 2" (51mm), Diameter: 5/8" (16mm), NPT: 1/2", UNC: 7/16" 194282 CME2
In stock online.

$10.99

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Anode with Plug, Length: 2" (51mm), Diameter: 3/4" (19mm), NPT: 3/4", UNC: 1/2" 485318 CME3
In stock online.

$12.99

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Anode with Plug, Length: 3 3/8" (86mm), Diameter: 3/4" (19mm), NPT: 3/4", UNC: 1/2" 485334 CME4
In stock online.

$12.99

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Anode with Plug, Length: 5 5/8" (92mm), Diameter: 3/4" (19mm), NPT: 3/4", UNC: 1/2" 217838 CME5
In stock online.

$12.99

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Anode Only, Length: 1 3/4" (45mm), Diameter: 3/8" (10mm), NPT: 1/4" 307314 CMEZ0
In stock online.

$2.99

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Anode Only, Length: 2" (51mm), Diameter: 1/4" (6mm), NPT: 1/8" 524611 CMEZ00
In stock online.

$2.99

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Anode Only, Length: 2" (45mm), Diameter: 1/2" (13mm), NPT: 3/8" 194290 CMEZ1
In stock online.

$3.99

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Anode Only, Length: 1 3/4" (45mm), Diameter: 1/2" (13mm), NPT: 3/8" 6670889 CMEZ1D
Ships from vendor

$1.89

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Anode Only, Length: 1 1/2" (38mm), Diameter: 1/2" (13mm), NPT: 3/8" 6670897 CMEZ1E
Ships when available.

$1.89

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Anode Only, Length: 1 1/4" (32mm), Diameter: 1/2" (13mm), NPT: 3/8" 6670905 CMEZ1F
Ships when available.

$1.79

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Anode Only, Length: 1" (25mm), Diameter: 1/2" (13mm), NPT: 3/8" 6670913 CMEZ1G
Ships when available.

$5.99

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Anode Only, Length: 2" (51mm), Diameter: 3/8" (10mm), NPT: 3/8" 4725826 CMEZ1H
Item no longer available.
Anode Only, Length: 2" (51mm), Diameter: 5/8" (16mm), NPT: 1/2" 194308 CMEZ2
In stock online.

$3.99

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Anode Only, Length: 2" (51mm), Diameter: 3/4" (19mm), NPT: 3/4" 485326 CMEZ3
Ships when available.

$3.99

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Anode Only, Length: 3 3/8" (86mm), Diameter: 3/4" (19mm), NPT: 3/4" 485342 CMEZ4
In stock online.

$3.99

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Anode Only, Length: 5 5/8" (92mm), Diameter: 3/4" (19mm), NPT: 3/4" 217820 CMEZ5
In stock online.

$4.59

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Protect your engine against galvanic corrosion by changing its anode regulary.

Anodes may be purchased as a complete assembly (anode with brass plug) or as a replacement anode only. Threads for replacement anodes (which screw into the plug) are “NPT.” Outside threads for plugs (which screw into the engine block) are “UNC”. “Length” refers to visible portion of anode when installed in plug. Offered in zinc alloy only.

Specs