{"id":7354,"date":"2026-06-16T06:14:59","date_gmt":"2026-06-16T06:14:59","guid":{"rendered":"http:\/\/australianholden.com\/?p=7354"},"modified":"2026-06-21T11:31:13","modified_gmt":"2026-06-21T11:31:13","slug":"vb-vc-vh-and-vk-radiator-replacement-guide","status":"publish","type":"post","link":"https:\/\/australianholden.com\/index.php\/2026\/06\/16\/vb-vc-vh-and-vk-radiator-replacement-guide\/","title":{"rendered":"VB, VC, VH and VK Radiator Replacement Guide"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The radiator is one of the most important components in any VB, VC, VH or VK Commodore. Its job is to remove heat from the engine and maintain stable operating temperatures, helping prevent overheating, engine damage and reduced performance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After more than four decades on Australian roads, many original Commodore radiators are reaching the end of their service life. Internal corrosion, blocked cores, leaking tanks and damaged fins are now extremely common, particularly on vehicles that have experienced inconsistent maintenance or long periods of storage.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Fortunately, radiator replacement is one of the most effective upgrades you can perform on an early Commodore. Whether you own a six-cylinder blue motor car or a V8-powered SL\/E, a modern replacement radiator can significantly improve cooling performance and reliability.<\/p>\n\n\n<div id=\"fu_ebay_0\"><!-- Presentation: cols = 4, rows = 2, slideshow = Manual, slides = 3, slideId = 0 --><div class=\"fu_ebay_results_container \">\n<h5 class=\"fu_ebay_results_title\" style=\"display: block !important;\">\n<a name=\"fu_slidetop_0\"><\/a><a href=\"https:\/\/www.ebay.com.au\/?mkcid=1&#038;mkrid=705-53470-19255-0&#038;siteid=15&#038;campid=5339152561&#038;customid=5339151688&#038;toolid=10049&#038;mkevt=1\" class=\"fu_ebay\" style=\"display:inline !important;\" rel=\"nofollow\" target=\"_blank\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/australianholden.com\/wp-content\/plugins\/fast-ebay-listings\/US\/Right_Now_108x45.gif?resize=108%2C45&#038;ssl=1\" style=\"border:0;display:block !important;\" width=\"108\" height=\"45\" alt=\"Right Now on eBay\"\/><\/a>&nbsp;Radiator<\/h5>\nLoading&#8230;<\/div>\n<\/div>\n<script>\n<!--\nvar content_fu_ebay_0 = null;\nvar waitForDepends_fu_ebay_0 = setInterval(function () {\n  if (typeof jQuery !== \"undefined\") {\n  if (window.fu_is_bot_useragent !== undefined) {\n    clearInterval(waitForDepends_fu_ebay_0);\n    if (typeof jQuery.ajax == \"undefined\") {\n      console.log(\"Fast eBay Listings: jQuery.ajax missing. Are you using jQuery.Slim that doesn't include ajax? \");\n      return;\n    }\n    if (fu_is_bot_useragent) return;\n    content_fu_ebay_0 = jQuery(\"#fu_ebay_0\");\n    jQuery(document).ready(jQuery.ajax({\n      type : \"post\",\n      url : \"https:\/\/australianholden.com\/wp-admin\/admin-ajax.php\",\n      data : {\n        action : \"fu_ebay_load_search\",\nfuDisableAPICache : 0,\nfuTraceLogging : 0,\nebay_country : \"AU\",\nfu_ebay_customId : \"\",\nfu_ebay_widget : 0,\nfu_ebay_picwidth : 225,\nfu_ebay_arrangement : 0,\nfu_ebay_title : \"Radiator\",\nfu_ebay_query : \"Commodore radiator\",\nfu_ebay_searchInDesc : 0,\nfu_ebay_searchLocation : \"Internationally\",\nfu_ebay_pickupPostcode : \"\",\nfu_ebay_pickupRadius : 0,\nfu_ebay_sort : \"BestMatch\",\nfu_ebay_categoryIds : \"6030\",\nfu_ebay_sellers : \"\",\nfu_ebay_sellerType : \"\",\nfu_ebay_buyingOptions : \"\",\nfu_ebay_conditionOptions : \"\",\nfu_ebay_minPrice : 0,\nfu_ebay_maxPrice : 0,\nfu_ebay_minBids : 0,\nfu_ebay_maxBids : 0,\nfu_cols : 4,\nfu_rows : 2,\nfu_slideshow : \"Manual\",\nfu_slides : 3,\nfu_slideId : 0,\n\n      },\n      success : function( response ) {\n        content_fu_ebay_0.html( response );\n      },\n      error: function(e) {\n        console.log(\"Fast eBay Listings: deferred loading error: \" + e);\n      }\n    }));\n  }}\n}, 10);\n\/\/-->\n<\/script>\n\n\n\n<h1 class=\"wp-block-heading\">Why Radiators Fail<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Original copper-brass radiators were built to last, but age eventually takes its toll.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Common Causes of Failure<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Internal corrosion<\/li>\n\n\n\n<li>Coolant neglect<\/li>\n\n\n\n<li>Sediment build-up<\/li>\n\n\n\n<li>Damaged cooling fins<\/li>\n\n\n\n<li>Electrolysis<\/li>\n\n\n\n<li>Age-related deterioration<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Even vehicles with low kilometres can suffer radiator problems.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Signs Your Radiator Needs Replacing<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Engine Overheating<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">One of the most obvious warning signs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Coolant Leaks<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Small leaks often develop around tanks and soldered joints.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Discoloured Coolant<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Rusty coolant usually indicates internal corrosion.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Damaged Cooling Fins<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Bent or deteriorated fins reduce cooling efficiency.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Frequent Coolant Loss<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A failing radiator often leaks under pressure.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Should You Repair or Replace?<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Some original radiators can be professionally re-cored.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Re-Coring Advantages<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Retains factory appearance<\/li>\n\n\n\n<li>Ideal for concours restorations<\/li>\n\n\n\n<li>Maintains originality<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Replacement Advantages<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Better cooling performance<\/li>\n\n\n\n<li>Lower cost in many cases<\/li>\n\n\n\n<li>Improved reliability<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">For most drivers, replacement is often the most practical option.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Choosing the Right Replacement Radiator<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Several radiator options are available for early Commodores.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Common Choices<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Standard copper-brass replacement<\/li>\n\n\n\n<li>Heavy-duty copper-brass radiator<\/li>\n\n\n\n<li>Aluminium performance radiator<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The best choice depends on intended vehicle use.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Standard Replacement Radiators<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Suitable for stock vehicles.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Best For<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Original restorations<\/li>\n\n\n\n<li>Weekend cruisers<\/li>\n\n\n\n<li>Mild six-cylinder engines<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Factory appearance<\/li>\n\n\n\n<li>Direct fitment<\/li>\n\n\n\n<li>Reliable cooling<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Aluminium Radiator Upgrades<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Aluminium radiators have become increasingly popular.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Improved cooling efficiency<\/li>\n\n\n\n<li>Reduced weight<\/li>\n\n\n\n<li>Greater heat dissipation<\/li>\n\n\n\n<li>Better performance in hot climates<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Best For<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Holden V8s<\/li>\n\n\n\n<li>Modified engines<\/li>\n\n\n\n<li>Towing applications<\/li>\n\n\n\n<li>Summer driving<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Best Radiator Upgrade<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended Product: Aluminium Performance Radiator<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Increased cooling capacity<\/li>\n\n\n\n<li>Improved reliability<\/li>\n\n\n\n<li>Direct-fit options available<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Best For<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>VB Commodore<\/li>\n\n\n\n<li>VC Commodore<\/li>\n\n\n\n<li>VH Commodore<\/li>\n\n\n\n<li>VK Commodore<\/li>\n<\/ul>\n\n\n<div id=\"fu_ebay_1\"><!-- Presentation: cols = 4, rows = 2, slideshow = Manual, slides = 3, slideId = 1 --><div class=\"fu_ebay_results_container \">\n<h5 class=\"fu_ebay_results_title\" style=\"display: block !important;\">\n<a name=\"fu_slidetop_1\"><\/a><a href=\"https:\/\/www.ebay.com.au\/?mkcid=1&#038;mkrid=705-53470-19255-0&#038;siteid=15&#038;campid=5339152561&#038;customid=5339151688&#038;toolid=10049&#038;mkevt=1\" class=\"fu_ebay\" style=\"display:inline !important;\" rel=\"nofollow\" target=\"_blank\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/australianholden.com\/wp-content\/plugins\/fast-ebay-listings\/US\/Right_Now_108x45.gif?resize=108%2C45&#038;ssl=1\" style=\"border:0;display:block !important;\" width=\"108\" height=\"45\" alt=\"Right Now on eBay\"\/><\/a>&nbsp;Radiator<\/h5>\nLoading&#8230;<\/div>\n<\/div>\n<script>\n<!--\nvar content_fu_ebay_1 = null;\nvar waitForDepends_fu_ebay_1 = setInterval(function () {\n  if (typeof jQuery !== \"undefined\") {\n  if (window.fu_is_bot_useragent !== undefined) {\n    clearInterval(waitForDepends_fu_ebay_1);\n    if (typeof jQuery.ajax == \"undefined\") {\n      console.log(\"Fast eBay Listings: jQuery.ajax missing. Are you using jQuery.Slim that doesn't include ajax? \");\n      return;\n    }\n    if (fu_is_bot_useragent) return;\n    content_fu_ebay_1 = jQuery(\"#fu_ebay_1\");\n    jQuery(document).ready(jQuery.ajax({\n      type : \"post\",\n      url : \"https:\/\/australianholden.com\/wp-admin\/admin-ajax.php\",\n      data : {\n        action : \"fu_ebay_load_search\",\nfuDisableAPICache : 0,\nfuTraceLogging : 0,\nebay_country : \"AU\",\nfu_ebay_customId : \"\",\nfu_ebay_widget : 0,\nfu_ebay_picwidth : 225,\nfu_ebay_arrangement : 0,\nfu_ebay_title : \"Radiator\",\nfu_ebay_query : \"aluminium radiator VB VC VH VK Commodore\",\nfu_ebay_searchInDesc : 0,\nfu_ebay_searchLocation : \"Internationally\",\nfu_ebay_pickupPostcode : \"\",\nfu_ebay_pickupRadius : 0,\nfu_ebay_sort : \"BestMatch\",\nfu_ebay_categoryIds : \"6030\",\nfu_ebay_sellers : \"\",\nfu_ebay_sellerType : \"\",\nfu_ebay_buyingOptions : \"\",\nfu_ebay_conditionOptions : \"\",\nfu_ebay_minPrice : 0,\nfu_ebay_maxPrice : 0,\nfu_ebay_minBids : 0,\nfu_ebay_maxBids : 0,\nfu_cols : 4,\nfu_rows : 2,\nfu_slideshow : \"Manual\",\nfu_slides : 3,\nfu_slideId : 1,\n\n      },\n      success : function( response ) {\n        content_fu_ebay_1.html( response );\n      },\n      error: function(e) {\n        console.log(\"Fast eBay Listings: deferred loading error: \" + e);\n      }\n    }));\n  }}\n}, 10);\n\/\/-->\n<\/script>\n\n\n\n<h1 class=\"wp-block-heading\">Tools Required<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Before beginning, gather the necessary tools.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Recommended Equipment<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Socket set<\/li>\n\n\n\n<li>Screwdrivers<\/li>\n\n\n\n<li>Drain pan<\/li>\n\n\n\n<li>Pliers<\/li>\n\n\n\n<li>Coolant funnel<\/li>\n\n\n\n<li>New coolant<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Having everything ready makes the job considerably easier.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Safety First<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Always allow the engine to cool completely.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Important Safety Tips<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Never remove radiator cap when hot<\/li>\n\n\n\n<li>Wear gloves<\/li>\n\n\n\n<li>Use eye protection<\/li>\n\n\n\n<li>Dispose of coolant responsibly<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Hot coolant can cause serious injury.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Step 1: Drain the Cooling System<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Place a drain pan beneath the radiator.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Procedure<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Remove radiator cap.<\/li>\n\n\n\n<li>Open drain tap if fitted.<\/li>\n\n\n\n<li>Disconnect lower radiator hose if necessary.<\/li>\n\n\n\n<li>Drain coolant completely.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Inspect the coolant as it drains.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Rusty coolant often indicates internal corrosion.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Step 2: Remove Fan Shroud<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Most early Commodores use a fan shroud to improve airflow.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Removal<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Remove retaining fasteners.<\/li>\n\n\n\n<li>Carefully lift shroud clear.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Avoid damaging brittle plastic components.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Step 3: Disconnect Radiator Hoses<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Remove both upper and lower radiator hoses.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Inspect For<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cracks<\/li>\n\n\n\n<li>Soft spots<\/li>\n\n\n\n<li>Swelling<\/li>\n\n\n\n<li>Oil contamination<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Old hoses should be replaced during radiator replacement.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Best Hose Upgrade<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended Product: Gates Radiator Hose Kit<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>OEM-quality construction<\/li>\n\n\n\n<li>Improved reliability<\/li>\n\n\n\n<li>Long service life<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Best For<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cooling system rebuilds<\/li>\n\n\n\n<li>Preventative maintenance<\/li>\n<\/ul>\n\n\n<div id=\"fu_ebay_2\"><!-- Presentation: cols = 4, rows = 2, slideshow = Manual, slides = 3, slideId = 2 --><div class=\"fu_ebay_results_container \">\n<h5 class=\"fu_ebay_results_title\" style=\"display: block !important;\">\n<a name=\"fu_slidetop_2\"><\/a><a href=\"https:\/\/www.ebay.com.au\/?mkcid=1&#038;mkrid=705-53470-19255-0&#038;siteid=15&#038;campid=5339152561&#038;customid=5339151688&#038;toolid=10049&#038;mkevt=1\" class=\"fu_ebay\" style=\"display:inline !important;\" rel=\"nofollow\" target=\"_blank\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/australianholden.com\/wp-content\/plugins\/fast-ebay-listings\/US\/Right_Now_108x45.gif?resize=108%2C45&#038;ssl=1\" style=\"border:0;display:block !important;\" width=\"108\" height=\"45\" alt=\"Right Now on eBay\"\/><\/a>&nbsp;Gates<\/h5>\nLoading&#8230;<\/div>\n<\/div>\n<script>\n<!--\nvar content_fu_ebay_2 = null;\nvar waitForDepends_fu_ebay_2 = setInterval(function () {\n  if (typeof jQuery !== \"undefined\") {\n  if (window.fu_is_bot_useragent !== undefined) {\n    clearInterval(waitForDepends_fu_ebay_2);\n    if (typeof jQuery.ajax == \"undefined\") {\n      console.log(\"Fast eBay Listings: jQuery.ajax missing. Are you using jQuery.Slim that doesn't include ajax? \");\n      return;\n    }\n    if (fu_is_bot_useragent) return;\n    content_fu_ebay_2 = jQuery(\"#fu_ebay_2\");\n    jQuery(document).ready(jQuery.ajax({\n      type : \"post\",\n      url : \"https:\/\/australianholden.com\/wp-admin\/admin-ajax.php\",\n      data : {\n        action : \"fu_ebay_load_search\",\nfuDisableAPICache : 0,\nfuTraceLogging : 0,\nebay_country : \"AU\",\nfu_ebay_customId : \"\",\nfu_ebay_widget : 0,\nfu_ebay_picwidth : 225,\nfu_ebay_arrangement : 0,\nfu_ebay_title : \"Gates\",\nfu_ebay_query : \"Gates radiator hose kit Commodore\",\nfu_ebay_searchInDesc : 0,\nfu_ebay_searchLocation : \"Internationally\",\nfu_ebay_pickupPostcode : \"\",\nfu_ebay_pickupRadius : 0,\nfu_ebay_sort : \"BestMatch\",\nfu_ebay_categoryIds : \"6030\",\nfu_ebay_sellers : \"\",\nfu_ebay_sellerType : \"\",\nfu_ebay_buyingOptions : \"\",\nfu_ebay_conditionOptions : \"\",\nfu_ebay_minPrice : 0,\nfu_ebay_maxPrice : 0,\nfu_ebay_minBids : 0,\nfu_ebay_maxBids : 0,\nfu_cols : 4,\nfu_rows : 2,\nfu_slideshow : \"Manual\",\nfu_slides : 3,\nfu_slideId : 2,\n\n      },\n      success : function( response ) {\n        content_fu_ebay_2.html( response );\n      },\n      error: function(e) {\n        console.log(\"Fast eBay Listings: deferred loading error: \" + e);\n      }\n    }));\n  }}\n}, 10);\n\/\/-->\n<\/script>\n\n\n\n<h1 class=\"wp-block-heading\">Step 4: Disconnect Transmission Cooler Lines<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Automatic Commodores have transmission cooler lines connected to the radiator.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Procedure<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Carefully disconnect fittings.<\/li>\n\n\n\n<li>Catch any fluid loss.<\/li>\n\n\n\n<li>Inspect lines for leaks.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Manual transmission vehicles do not require this step.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Step 5: Remove Radiator Mounting Hardware<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Radiators are secured using mounting brackets and rubber supports.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Check<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rubber mounts<\/li>\n\n\n\n<li>Retaining brackets<\/li>\n\n\n\n<li>Fasteners<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Worn mounts should be replaced.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Step 6: Remove the Radiator<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Lift the radiator carefully from the engine bay.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Inspect<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Core condition<\/li>\n\n\n\n<li>Tank corrosion<\/li>\n\n\n\n<li>Fin damage<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This is a good opportunity to compare the old and new units.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Step 7: Inspect the Cooling System<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Before installing the new radiator, inspect related components.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Check<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Water pump<\/li>\n\n\n\n<li>Fan clutch<\/li>\n\n\n\n<li>Thermostat<\/li>\n\n\n\n<li>Hoses<\/li>\n\n\n\n<li>Heater hoses<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Replacing worn parts now saves labour later.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Best Water Pump Replacement<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended Product: GMB Water Pump<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Reliable operation<\/li>\n\n\n\n<li>OEM-quality design<\/li>\n\n\n\n<li>Excellent durability<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Best For<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Blue motor sixes<\/li>\n\n\n\n<li>Holden V8s<\/li>\n<\/ul>\n\n\n<div id=\"fu_ebay_3\"><!-- Presentation: cols = 4, rows = 2, slideshow = Manual, slides = 3, slideId = 3 --><div class=\"fu_ebay_results_container \">\n<h5 class=\"fu_ebay_results_title\" style=\"display: block !important;\">\n<a name=\"fu_slidetop_3\"><\/a><a href=\"https:\/\/www.ebay.com.au\/?mkcid=1&#038;mkrid=705-53470-19255-0&#038;siteid=15&#038;campid=5339152561&#038;customid=5339151688&#038;toolid=10049&#038;mkevt=1\" class=\"fu_ebay\" style=\"display:inline !important;\" rel=\"nofollow\" target=\"_blank\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/australianholden.com\/wp-content\/plugins\/fast-ebay-listings\/US\/Right_Now_108x45.gif?resize=108%2C45&#038;ssl=1\" style=\"border:0;display:block !important;\" width=\"108\" height=\"45\" alt=\"Right Now on eBay\"\/><\/a>&nbsp;GMB<\/h5>\nLoading&#8230;<\/div>\n<\/div>\n<script>\n<!--\nvar content_fu_ebay_3 = null;\nvar waitForDepends_fu_ebay_3 = setInterval(function () {\n  if (typeof jQuery !== \"undefined\") {\n  if (window.fu_is_bot_useragent !== undefined) {\n    clearInterval(waitForDepends_fu_ebay_3);\n    if (typeof 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Are you using jQuery.Slim that doesn't include ajax? \");\n      return;\n    }\n    if (fu_is_bot_useragent) return;\n    content_fu_ebay_5 = jQuery(\"#fu_ebay_5\");\n    jQuery(document).ready(jQuery.ajax({\n      type : \"post\",\n      url : \"https:\/\/australianholden.com\/wp-admin\/admin-ajax.php\",\n      data : {\n        action : \"fu_ebay_load_search\",\nfuDisableAPICache : 0,\nfuTraceLogging : 0,\nebay_country : \"AU\",\nfu_ebay_customId : \"\",\nfu_ebay_widget : 0,\nfu_ebay_picwidth : 225,\nfu_ebay_arrangement : 0,\nfu_ebay_title : \"Tridon\",\nfu_ebay_query : \"Tridon thermostat Commodore\",\nfu_ebay_searchInDesc : 0,\nfu_ebay_searchLocation : \"Internationally\",\nfu_ebay_pickupPostcode : \"\",\nfu_ebay_pickupRadius : 0,\nfu_ebay_sort : \"BestMatch\",\nfu_ebay_categoryIds : \"6030\",\nfu_ebay_sellers : \"\",\nfu_ebay_sellerType : \"\",\nfu_ebay_buyingOptions : \"\",\nfu_ebay_conditionOptions : \"\",\nfu_ebay_minPrice : 0,\nfu_ebay_maxPrice : 0,\nfu_ebay_minBids : 0,\nfu_ebay_maxBids : 0,\nfu_cols : 4,\nfu_rows : 2,\nfu_slideshow : \"Manual\",\nfu_slides : 3,\nfu_slideId : 5,\n\n      },\n      success : function( response ) {\n        content_fu_ebay_5.html( response );\n      },\n      error: function(e) {\n        console.log(\"Fast eBay Listings: deferred loading error: \" + e);\n      }\n    }));\n  }}\n}, 10);\n\/\/-->\n<\/script>\n\n\n\n<h1 class=\"wp-block-heading\">Common Installation Mistakes<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Reusing Old Hoses<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Old hoses frequently fail shortly after radiator replacement.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Forgetting the Fan Shroud<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This significantly reduces airflow.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Using Plain Water<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Always use quality coolant.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ignoring Other Cooling Components<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A new radiator cannot compensate for a failing water pump or thermostat.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Recommended Cooling System Upgrade Package<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">For most VB, VC, VH and VK Commodores, the ideal cooling package includes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Aluminium radiator<\/li>\n\n\n\n<li>GMB water pump<\/li>\n\n\n\n<li>Tridon thermostat<\/li>\n\n\n\n<li>Gates hose kit<\/li>\n\n\n\n<li>Penrite coolant<\/li>\n\n\n\n<li>Fan clutch inspection<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This combination delivers excellent reliability and cooling performance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Radiator replacement is one of the best preventative maintenance jobs you can perform on an early Commodore. Many original radiators are now well beyond their intended lifespan, and cooling system failures remain one of the leading causes of breakdowns among classic Holdens.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A quality replacement radiator not only improves cooling efficiency but also provides peace of mind during long drives, summer cruising and club events. Combined with fresh coolant, quality hoses and a properly functioning thermostat, a new radiator can dramatically improve the reliability of your VB, VC, VH or VK Commodore.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Whether you&#8217;re restoring a factory-original SL\/E, maintaining a family-owned VK wagon or building a tough V8 street machine, a healthy cooling system is essential to keeping your classic Commodore on the road.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Related Articles<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/16\/vb-vc-vh-and-vk-commodore-cooling-system-problems\/\" type=\"post\" id=\"7352\">VB VC VH VK Commodore Cooling System Problems<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/16\/holden-253-308-v8-issues-explained\/\" type=\"post\" id=\"7340\">Holden 253 &amp; 308 V8 Issues Explained<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/16\/how-to-inspect-an-early-commodore-before-buying\/\" type=\"post\" id=\"7348\">How to Inspect an Early Commodore Before Buying<\/a><\/li>\n\n\n\n<li>Best Coolants for Classic Holdens<\/li>\n\n\n\n<li>Best Rust Prevention Products for Classic Commodores<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The radiator is one of the most important components in any VB, VC, VH or VK Commodore. Its job is to remove heat from the engine and maintain stable operating temperatures, helping prevent overheating, engine damage and reduced performance. After more than four decades on Australian roads, many original Commodore radiators are reaching the end [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":585,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[1],"tags":[],"class_list":["post-7354","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>VB, VC, VH and VK Radiator Replacement Guide - Australian Holden<\/title>\n<meta name=\"description\" content=\"The radiator is one of the most important components in any VB, VC, VH or VK Commodore.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/16\/vb-vc-vh-and-vk-radiator-replacement-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"VB, VC, VH and VK Radiator Replacement Guide - Australian Holden\" \/>\n<meta property=\"og:description\" content=\"The radiator is one of the most important components in any VB, VC, VH or VK Commodore.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/australianholden.com\/index.php\/2026\/06\/16\/vb-vc-vh-and-vk-radiator-replacement-guide\/\" \/>\n<meta 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