{"product_id":"engine-cooling-system-replacement-anodes","title":"Engine Cooling System Replacement Anodes – Marine Pencil Anodes NZ","description":"\u003cp data-start=\"414\" data-end=\"741\"\u003e\u003cstrong data-start=\"414\" data-end=\"458\"\u003eEngine Cooling System Replacement Anodes\u003c\/strong\u003e (often called \u003cstrong data-start=\"473\" data-end=\"490\"\u003epencil anodes\u003c\/strong\u003e) are essential components designed to protect your marine engine’s cooling system from \u003cstrong data-start=\"578\" data-end=\"600\"\u003egalvanic corrosion\u003c\/strong\u003e. Installed inside heat exchangers and cooling passages, they act as \u003cstrong data-start=\"669\" data-end=\"690\"\u003esacrificial metal\u003c\/strong\u003e, corroding in place of critical engine components.\u003c\/p\u003e\n\u003cp data-start=\"743\" data-end=\"928\"\u003eThese anodes are made from \u003cstrong data-start=\"780\" data-end=\"820\"\u003ezinc\u003c\/strong\u003e, being the most common choice for saltwater applications. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"930\" data-end=\"1161\"\u003eEach anode is threaded so can be installed into a \u003cstrong data-start=\"960\" data-end=\"974\"\u003ebrass plug\u003c\/strong\u003e and installed directly into the cooling system, where it protects internal metal surfaces such as heat exchangers, oil coolers, and engine blocks. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1163\" data-end=\"1333\"\u003eRegular replacement is critical—these anodes gradually dissolve over time and must be inspected frequently to maintain protection. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1335\" data-end=\"1338\"\u003e\n\u003ch1 data-section-id=\"8av2ty\" data-start=\"1340\" data-end=\"1358\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1342\" data-end=\"1358\"\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cul data-start=\"1360\" data-end=\"1930\"\u003e\n\u003cli data-section-id=\"8m8lso\" data-start=\"1360\" data-end=\"1431\"\u003eProtects engine cooling systems from \u003cstrong data-start=\"1399\" data-end=\"1429\"\u003ecorrosion and electrolysis\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"pfx02l\" data-start=\"1432\" data-end=\"1542\"\u003e\n\u003cstrong data-start=\"1434\" data-end=\"1456\"\u003eSacrificial design\u003c\/strong\u003e – anode corrodes instead of engine components \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"4b2wbw\" data-start=\"1543\" data-end=\"1651\"\u003eCommonly used in \u003cstrong data-start=\"1562\" data-end=\"1611\"\u003eheat exchangers and raw water cooling systems\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"fgvy12\" data-start=\"1652\" data-end=\"1710\"\u003eAvailable in \u003cstrong data-start=\"1667\" data-end=\"1708\"\u003ezinc\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1943sc\" data-start=\"1711\" data-end=\"1812\"\u003eSupplied with \u003cstrong data-start=\"1727\" data-end=\"1772\"\u003ethreaded end for easy installation\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"106svz9\" data-start=\"1813\" data-end=\"1867\"\u003eEssential for \u003cstrong data-start=\"1829\" data-end=\"1865\"\u003ediesel and petrol marine engines\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"x9f535\" data-start=\"1868\" data-end=\"1930\"\u003eWide range of sizes to suit \u003cstrong data-start=\"1898\" data-end=\"1930\"\u003eYanmar, Volvo, Cummins, etc.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1932\" data-end=\"1935\"\u003e\n\u003ch1 data-section-id=\"1qhcnt8\" data-start=\"1937\" data-end=\"1973\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1939\" data-end=\"1973\"\u003eSpecifications \u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cul data-start=\"1975\" data-end=\"2385\"\u003e\n\u003cli data-section-id=\"13lc9bt\" data-start=\"1975\" data-end=\"2020\"\u003eType: Pencil anode \/ engine cooling anode\u003c\/li\u003e\n\u003cli data-section-id=\"1w5c03g\" data-start=\"2021\" data-end=\"2165\"\u003eMaterials: Zinc (saltwater) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"h06zv2\" data-start=\"2166\" data-end=\"2231\"\u003eMounting: Threaded plug (various sizes e.g. 1\/4\", 3\/8\", 1\/2\")\u003c\/li\u003e\n\u003cli data-section-id=\"1q5t07b\" data-start=\"2232\" data-end=\"2315\"\u003eLength: Approx. 45–65mm\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1ko81ng\" data-start=\"2316\" data-end=\"2385\"\u003eApplication: Heat exchangers, oil coolers, engine cooling systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2387\" data-end=\"2390\"\u003e\n\u003ch1 data-section-id=\"1qp7jpf\" data-start=\"2392\" data-end=\"2438\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2394\" data-end=\"2438\"\u003eWhy These Anodes Matter \u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp data-start=\"2440\" data-end=\"2694\"\u003eFor New Zealand boat owners, \u003cstrong data-start=\"2469\" data-end=\"2538\"\u003esaltwater corrosion is one of the biggest causes of engine damage\u003c\/strong\u003e. Engine cooling systems combine \u003cstrong data-start=\"2571\" data-end=\"2612\"\u003edissimilar metals, heat, and seawater\u003c\/strong\u003e, creating ideal conditions for corrosion. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"2696\" data-end=\"2790\"\u003eReplacement anodes provide a simple, low-cost solution to protect expensive components like:\u003c\/p\u003e\n\u003cul data-start=\"2791\" data-end=\"2844\"\u003e\n\u003cli data-section-id=\"1if5j2i\" data-start=\"2791\" data-end=\"2810\"\u003eHeat exchangers\u003c\/li\u003e\n\u003cli data-section-id=\"ke4kx5\" data-start=\"2811\" data-end=\"2826\"\u003eOil coolers\u003c\/li\u003e\n\u003cli data-section-id=\"1tw76rg\" data-start=\"2827\" data-end=\"2844\"\u003eEngine blocks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2846\" data-end=\"2995\"\u003eNeglecting them can lead to \u003cstrong data-start=\"2874\" data-end=\"2923\"\u003eserious internal corrosion and costly repairs\u003c\/strong\u003e, making them one of the most important maintenance items on any vessel.\u003c\/p\u003e","brand":"Martyr","offers":[{"title":"1\/4 UNC x 2\"","offer_id":48303690481912,"sku":"CMEZ00","price":6.0,"currency_code":"NZD","in_stock":true},{"title":"5\/16 UNC x 1-3\/4\"","offer_id":48303715254520,"sku":"CMEZ0","price":8.0,"currency_code":"NZD","in_stock":true},{"title":"3\/8 UNC x 1-3\/4\"","offer_id":48303715287288,"sku":"CMEZ1","price":10.0,"currency_code":"NZD","in_stock":true},{"title":"7\/16 UNC x 2\"","offer_id":48303715320056,"sku":"CMEZ2","price":14.0,"currency_code":"NZD","in_stock":true},{"title":"1\/2 UNC x 2\"","offer_id":48303715352824,"sku":"CMEZ3","price":18.0,"currency_code":"NZD","in_stock":true},{"title":"1\/2 UNC x 3-3\/4\"","offer_id":48303715385592,"sku":"CMEZ4","price":20.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0691\/0899\/0200\/files\/Engine_Cooling_Replacement_Anode.jpg?v=1777591200","url":"https:\/\/bartonmarine.co.nz\/products\/engine-cooling-system-replacement-anodes","provider":"Barton Marine","version":"1.0","type":"link"}