{"id":9970409767152,"title":"2003-2005 GM 6.6L Duramax Performance Transmission Cooler Purple Clips","handle":"6-6l-duramax-performance-transmission-cooler-2003-2005-gm-purple-clips","description":"\u003ch2 style=\"text-align: left;\"\u003e6.6L Duramax Performance Transmission Cooler\u003c\/h2\u003e\n\u003cp style=\"text-align: justify;\"\u003eExcess heat is the #1 killer of transmissions. For individuals who tow, race or simply run their diesel hard, proper cooling of your transmission fluid is one of the most important things that you can do to increase the life of your transmission. When the mainline pressure is increased with upgrades such as a high-performance transmission kit, your transmission generates additional heat. A PPE 6.6L Duramax Performance Transmission Cooler is critical in such situations.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"display: block; margin-left: auto; margin-right: auto;\" src=\"https:\/\/ppepower.com\/cdn\/shop\/files\/2003-2005-GM-6.6L-Duramax-Performance-Transmission-Cooler-Purple-Clips-Pacific-Performance-Engineering-592931_1200x.jpg?v=1715212368\" alt=\"6.6L Duramax Performance Transmission Cooler, 03-05 GM, Purple Clips\" width=\"550\"\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp style=\"text-align: justify;\"\u003ePPE’s Performance Transmission Cooler is a direct bolt-on replacement part that lowers the fluid temperatures up to an additional 20 to 30 degrees over the stock unit and comes with a limited lifetime warranty.\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"display: block; margin-left: auto; margin-right: auto;\" src=\"https:\/\/ppepower.com\/cdn\/shop\/files\/PPE-ADVANTAGE-COMPARISON-124062101_2000x.jpg?v=1752271867\" alt=\"6.6L Duramax Performance Transmission Cooler, 03-05 GM, Purple Clips\" width=\"1000\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e 2001-2005 Allison 1000\/2000 Duramax\/Gas Engines.\u003c\/p\u003e\n\u003cp\u003eBefore removing the factory transmission cooler from your truck check the color of the clips in the fittings that connect the transmission cooler to the cooler lines.\u003c\/p\u003e\n\u003cp\u003eUse PPE part number (\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0611\/8539\/2883\/files\/2001-2003-GM-6.6L-Duramax-Performance-Transmission-Cooler-Orange-Clips-Pacific-Performance-Engineering-592250_large.jpg?v=1715212347\" target=\"_blank\" rel=\"noopener\"\u003e124060000\u003c\/a\u003e) for  \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0611\/8539\/2883\/files\/2001-2003-GM-6.6L-Duramax-Performance-Transmission-Cooler-Orange-Clips-Pacific-Performance-Engineering-592250_large.jpg?v=1715212347\" target=\"_blank\" rel=\"noopener\"\u003e2001-2003 Cooler\u003c\/a\u003e - connectors with Orange Clips.\u003c\/p\u003e\n\u003cp\u003eUse PPE part number (\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0611\/8539\/2883\/files\/2003-2005-GM-6.6L-Duramax-Performance-Transmission-Cooler-Purple-Clips-Pacific-Performance-Engineering-592722_large.jpg?v=1715212362\" target=\"_blank\" rel=\"noopener\"\u003e124060300\u003c\/a\u003e) for \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0611\/8539\/2883\/files\/2003-2005-GM-6.6L-Duramax-Performance-Transmission-Cooler-Purple-Clips-Pacific-Performance-Engineering-592722_large.jpg?v=1715212362\" target=\"_blank\" rel=\"noopener\"\u003e2003-2005 Cooler\u003c\/a\u003e - connectors with Purple Clips.\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"display: block; margin-left: auto; margin-right: auto;\" src=\"https:\/\/ppepower.com\/cdn\/shop\/files\/2003-2005-GM-6.6L-Duramax-Performance-Transmission-Cooler-Purple-Clips-Pacific-Performance-Engineering-593143_1200x.jpg?v=1715212371\" alt=\"6.6L Duramax Performance Transmission Cooler, 03-05 GM, Purple Clips\" width=\"700\"\u003e\u003c\/p\u003e\n\u003ch5\u003eMedia\u003c\/h5\u003e\n\u003ch2\u003eRead about PPE\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.fourwheeler.com\/news\/features\/1908-towing-products-engine-performance-rubber-meeting-road-everything\/\"\u003eLearn more about this product from FourWheeler\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.powernationtv.com\/episode\/TT2017-20\/supermax-stage-2-final-mods\"\u003eLearn more about this product from Truck Tech's SuperMax Project\u003c\/a\u003e\u003c\/p\u003e","published_at":"2026-04-04T18:17:48-07:00","created_at":"2026-04-04T18:17:49-07:00","vendor":"Pacific Performance Engineering","type":"","tags":["2003-chevrolet-silverado-2500hd-8-1l-v8-gas-esr6752786","2003-chevrolet-silverado-2500hd-8-cyl-6-6-liter-turbo-esi6051154","2003-chevrolet-silverado-3500hd-8-1l-v8-gas-esr2574274","2003-chevrolet-silverado-3500hd-8-cyl-6-6-liter-turbo-esi4501871","2003-gmc-sierra-2500hd-8-cyl-6-6-liter-turbo-esi2470648","2003-gmc-sierra-2500hd-8-cyl-8-1-liter-esi8308782","2003-gmc-sierra-3500hd-8-1l-v8-gas-esr1852600","2003-gmc-sierra-3500hd-8-cyl-6-6-liter-turbo-esi6095730","2004-2005-gmc-sierra-3500hd-8-1l-v8-gas-esr8623883","2004-2006-chevrolet-silverado-3500hd-8-1l-v8-gas-esr5533249","2004-chevrolet-silverado-2500-hd-lly-8-cyl-6-6-liter-esr1301384","2004-chevrolet-silverado-2500hd-8-cyl-6-6-liter-turbo-esi8053781","2004-chevrolet-silverado-2500hd-8-cyl-8-1-liter-esi3984240","2004-chevrolet-silverado-3500hd-8-cyl-6-6-liter-turbo-esi4286045","2004-gmc-sierra-2500hd-8-cyl-6-6-liter-turbo-esi4127483","2004-gmc-sierra-2500hd-8-cyl-8-1-liter-esi4122173","2004-gmc-sierra-3500hd-8-cyl-6-6-liter-turbo-esi7379111","2004-gmc-sierra-3500hd-lly-8-cyl-6-6-liter-turbo-esr7076585","2005-chevrolet-silverado-2500hd-8-cyl-6-6-liter-turbo-esi8079105","2005-chevrolet-silverado-2500hd-8-cyl-8-1-liter-esi8079459","2005-chevrolet-silverado-3500hd-8-cyl-6-6-liter-turbo-esi9612207","2005-gmc-sierra-2500hd-8-cyl-6-6-liter-turbo-esi9745976","2005-gmc-sierra-2500hd-8-cyl-8-1-liter-esi4705922","2005-gmc-sierra-3500hd-8-cyl-6-6-liter-turbo-esi6494594","GM","Transmission Cooler","Transmission Upgrades"],"price":21999,"price_min":21999,"price_max":21999,"available":true,"price_varies":false,"compare_at_price":0,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":49501372842224,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"124060300","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"2003-2005 GM 6.6L Duramax Performance Transmission Cooler Purple Clips","public_title":null,"options":["Default Title"],"price":21999,"weight":3629,"compare_at_price":0,"inventory_quantity":0,"inventory_management":null,"inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/www.hitechclassics.com\/cdn\/shop\/files\/2003-2005-GM-6.6L-Duramax-Performance-Transmission-Cooler-Purple-Clips-Pacific-Performance-Engineering-592722.jpg?v=1775351871","\/\/www.hitechclassics.com\/cdn\/shop\/files\/2003-2005-GM-6.6L-Duramax-Performance-Transmission-Cooler-Purple-Clips-Pacific-Performance-Engineering-593098.jpg?v=1775351871"],"featured_image":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2003-2005-GM-6.6L-Duramax-Performance-Transmission-Cooler-Purple-Clips-Pacific-Performance-Engineering-592722.jpg?v=1775351871","options":["Title"],"media":[{"alt":null,"id":44161394049264,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2003-2005-GM-6.6L-Duramax-Performance-Transmission-Cooler-Purple-Clips-Pacific-Performance-Engineering-592722.jpg?v=1775351871"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2003-2005-GM-6.6L-Duramax-Performance-Transmission-Cooler-Purple-Clips-Pacific-Performance-Engineering-592722.jpg?v=1775351871","width":1200},{"alt":null,"id":44161394082032,"position":2,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2003-2005-GM-6.6L-Duramax-Performance-Transmission-Cooler-Purple-Clips-Pacific-Performance-Engineering-593098.jpg?v=1775351871"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2003-2005-GM-6.6L-Duramax-Performance-Transmission-Cooler-Purple-Clips-Pacific-Performance-Engineering-593098.jpg?v=1775351871","width":1200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch2 style=\"text-align: left;\"\u003e6.6L Duramax Performance Transmission Cooler\u003c\/h2\u003e\n\u003cp style=\"text-align: justify;\"\u003eExcess heat is the #1 killer of transmissions. For individuals who tow, race or simply run their diesel hard, proper cooling of your transmission fluid is one of the most important things that you can do to increase the life of your transmission. When the mainline pressure is increased with upgrades such as a high-performance transmission kit, your transmission generates additional heat. A PPE 6.6L Duramax Performance Transmission Cooler is critical in such situations.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"display: block; margin-left: auto; margin-right: auto;\" src=\"https:\/\/ppepower.com\/cdn\/shop\/files\/2003-2005-GM-6.6L-Duramax-Performance-Transmission-Cooler-Purple-Clips-Pacific-Performance-Engineering-592931_1200x.jpg?v=1715212368\" alt=\"6.6L Duramax Performance Transmission Cooler, 03-05 GM, Purple Clips\" width=\"550\"\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp style=\"text-align: justify;\"\u003ePPE’s Performance Transmission Cooler is a direct bolt-on replacement part that lowers the fluid temperatures up to an additional 20 to 30 degrees over the stock unit and comes with a limited lifetime warranty.\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"display: block; margin-left: auto; margin-right: auto;\" src=\"https:\/\/ppepower.com\/cdn\/shop\/files\/PPE-ADVANTAGE-COMPARISON-124062101_2000x.jpg?v=1752271867\" alt=\"6.6L Duramax Performance Transmission Cooler, 03-05 GM, Purple Clips\" width=\"1000\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e 2001-2005 Allison 1000\/2000 Duramax\/Gas Engines.\u003c\/p\u003e\n\u003cp\u003eBefore removing the factory transmission cooler from your truck check the color of the clips in the fittings that connect the transmission cooler to the cooler lines.\u003c\/p\u003e\n\u003cp\u003eUse PPE part number (\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0611\/8539\/2883\/files\/2001-2003-GM-6.6L-Duramax-Performance-Transmission-Cooler-Orange-Clips-Pacific-Performance-Engineering-592250_large.jpg?v=1715212347\" target=\"_blank\" rel=\"noopener\"\u003e124060000\u003c\/a\u003e) for  \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0611\/8539\/2883\/files\/2001-2003-GM-6.6L-Duramax-Performance-Transmission-Cooler-Orange-Clips-Pacific-Performance-Engineering-592250_large.jpg?v=1715212347\" target=\"_blank\" rel=\"noopener\"\u003e2001-2003 Cooler\u003c\/a\u003e - connectors with Orange Clips.\u003c\/p\u003e\n\u003cp\u003eUse PPE part number (\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0611\/8539\/2883\/files\/2003-2005-GM-6.6L-Duramax-Performance-Transmission-Cooler-Purple-Clips-Pacific-Performance-Engineering-592722_large.jpg?v=1715212362\" target=\"_blank\" rel=\"noopener\"\u003e124060300\u003c\/a\u003e) for \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0611\/8539\/2883\/files\/2003-2005-GM-6.6L-Duramax-Performance-Transmission-Cooler-Purple-Clips-Pacific-Performance-Engineering-592722_large.jpg?v=1715212362\" target=\"_blank\" rel=\"noopener\"\u003e2003-2005 Cooler\u003c\/a\u003e - connectors with Purple Clips.\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"display: block; margin-left: auto; margin-right: auto;\" src=\"https:\/\/ppepower.com\/cdn\/shop\/files\/2003-2005-GM-6.6L-Duramax-Performance-Transmission-Cooler-Purple-Clips-Pacific-Performance-Engineering-593143_1200x.jpg?v=1715212371\" alt=\"6.6L Duramax Performance Transmission Cooler, 03-05 GM, Purple Clips\" width=\"700\"\u003e\u003c\/p\u003e\n\u003ch5\u003eMedia\u003c\/h5\u003e\n\u003ch2\u003eRead about PPE\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.fourwheeler.com\/news\/features\/1908-towing-products-engine-performance-rubber-meeting-road-everything\/\"\u003eLearn more about this product from FourWheeler\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.powernationtv.com\/episode\/TT2017-20\/supermax-stage-2-final-mods\"\u003eLearn more about this product from Truck Tech's SuperMax Project\u003c\/a\u003e\u003c\/p\u003e"}