{"product_id":"zinc-pencil-anode-3-4-npt-cmt-e4","title":"Zinc Pencil Anode 3\/4\" NPT x 3\/4\" x 3-3\/8\" – CMT-E4","description":"\u003cp data-start=\"85\" data-end=\"467\"\u003eMartyr CMT-E4 is a zinc pencil anode sized 3\/4\" NPT x 3\/4\" x 3-3\/8\", used to help protect marine engine cooling passages, heat exchangers, oil coolers, and other internal raw-water components from galvanic corrosion in saltwater service. This is a complete pencil anode with brass plug. Zinc is intended for saltwater use. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"469\" data-end=\"483\"\u003eKey Features\u003c\/p\u003e\n\u003cul data-start=\"484\" data-end=\"761\"\u003e\n\u003cli data-start=\"484\" data-end=\"521\"\u003eZinc pencil anode with brass plug\u003c\/li\u003e\n\u003cli data-start=\"522\" data-end=\"547\"\u003eThread size: 3\/4\" NPT\u003c\/li\u003e\n\u003cli data-start=\"548\" data-end=\"572\"\u003eAnode diameter: 3\/4\"\u003c\/li\u003e\n\u003cli data-start=\"573\" data-end=\"597\"\u003eAnode length: 3-3\/8\"\u003c\/li\u003e\n\u003cli data-start=\"598\" data-end=\"647\"\u003eComplete engine cooling system anode assembly\u003c\/li\u003e\n\u003cli data-start=\"648\" data-end=\"761\"\u003eDesigned for internal corrosion protection in raw-water-cooled components \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"763\" data-end=\"1116\"\u003eEngine Compatibility\u003cbr data-start=\"783\" data-end=\"786\"\u003eThis part is used across a range of marine engines, generators, and cooling-system components that take a 3\/4\" NPT pencil anode in the 3\/4\" x 3-3\/8\" size. Fitment should be confirmed by plug thread, anode diameter, anode length, and installed housing style rather than by engine family alone. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1118\" data-end=\"1418\"\u003eSerial Number Fitment Notice\u003cbr data-start=\"1146\" data-end=\"1149\"\u003eFitment should be confirmed by the installed anode dimensions and thread specification rather than serial number alone. Match the existing anode by 3\/4\" NPT plug thread, 3\/4\" anode diameter, and 3-3\/8\" anode length before ordering. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1420\" data-end=\"1839\"\u003eWhen This Part Needs Replacement\u003cbr data-start=\"1452\" data-end=\"1455\"\u003eReplace when the zinc is heavily wasted, brittle, scaled, reduced in diameter, or no longer providing usable protective mass. Pencil anodes should be inspected regularly because they protect internal water-side components where corrosion can become expensive if service is delayed. This part is part of Martyr’s engine cooling system anode range. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1841\" data-end=\"2188\"\u003eInstallation Notes\u003cbr data-start=\"1859\" data-end=\"1862\"\u003eInstall only where a 3\/4\" NPT pencil anode of this exact size is specified. Remove the old anode carefully, inspect the plug threads and sealing surfaces, and confirm the replacement length and diameter match the housing correctly. Zinc is the correct material for saltwater applications. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"2190\" data-end=\"2227\"\u003eAlternate \/ Superseded Part Numbers\u003c\/p\u003e\n\u003cul data-start=\"2228\" data-end=\"2291\"\u003e\n\u003cli data-start=\"2228\" data-end=\"2236\"\u003eCME4\u003c\/li\u003e\n\u003cli data-start=\"2237\" data-end=\"2244\"\u003eE-4\u003c\/li\u003e\n\u003cli data-start=\"2245\" data-end=\"2291\"\u003eCMT-E4 \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2293\" data-end=\"2675\"\u003eParts Desk Insight\u003cbr data-start=\"2311\" data-end=\"2314\"\u003eWith pencil anodes, matching thread size alone is not enough. Diameter and length also need to match the housing so the anode protects properly without creating clearance issues inside the cooler or water passage. Martyr’s current CME listing shows CME4 as the 3\/4\" NPT model with a 3-3\/8\" length and 3\/4\" outside diameter. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"2677\" data-end=\"2753\"\u003eShipping\u003cbr data-start=\"2685\" data-end=\"2688\"\u003eShipping: Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564132827172,"sku":"CMT-E4","price":28.84,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/db57c698-3640-49ab-bcca-b496acb1fea2.png?v=1775441259","url":"https:\/\/marisolmarine.com\/products\/zinc-pencil-anode-3-4-npt-cmt-e4","provider":"Marisol Marine Company","version":"1.0","type":"link"}