{"product_id":"duramax-transmission-cooler-line-kit-fluidyne-transmission-cooler-chevy-silverado-gmc-sierra-2001-2016","title":"Duramax 5\/8\" Transmission Cooler Line Kit with Fluidyne Transmission Cooler for 2001-2016 Chevy Silverado \u0026 GMC Sierra","description":"\u003cp data-start=\"190\" data-end=\"249\"\u003e\u003cstrong\u003eBefore Ordering: Select the Correct Kit for Your Truck\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"315\" data-end=\"449\"\u003e\u003cstrong data-start=\"315\" data-end=\"449\"\u003eUse the reference photos below to identify your factory transmission cooler line configuration and select the matching kit option.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"454\" data-end=\"561\"\u003e\u003cstrong data-start=\"454\" data-end=\"561\"\u003eNot sure which kit you need? Send us your VIN or photos and we'll help verify fitment before you order.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"190\" data-end=\"249\"\u003e\u003cstrong data-start=\"190\" data-end=\"249\"\u003eStop Leaking Duramax Transmission Cooler Lines for Good\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"251\" data-end=\"516\"\u003eTired of leaking Duramax transmission cooler lines? Our upgraded 5\/8\" transmission cooler line kit replaces failure-prone factory lines on 2001-2016 Chevy Silverado and GMC Sierra Duramax trucks. Built to last and backed by our No Questions Asked Lifetime Warranty.\u003c\/p\u003e\n\u003cp data-start=\"518\" data-end=\"726\"\u003eLeaking transmission cooler lines are one of the most common issues on Duramax trucks. Factory lines can corrode, seep, or fail over time, leading to transmission fluid loss and potentially expensive repairs.\u003c\/p\u003e\n\u003cp data-start=\"728\" data-end=\"1098\"\u003eOur upgraded 5\/8\" Duramax Transmission Cooler Line Kit is designed to provide a reliable, long-lasting solution for Chevy Silverado and GMC Sierra HD trucks equipped with the Duramax diesel and Allison transmission. Whether you're fixing an active leak or replacing aging factory lines before they fail, this kit delivers the durability and performance your truck needs.\u003c\/p\u003e\n\u003ch3 data-start=\"1100\" data-end=\"1112\"\u003eFeatures\u003c\/h3\u003e\n\u003cp data-start=\"1113\" data-end=\"1401\"\u003e✔ Replaces failure-prone factory transmission cooler lines\u003cbr data-start=\"1171\" data-end=\"1174\"\u003e✔ Fits 2001-2016 Chevy Silverado and GMC Sierra Duramax diesel trucks\u003cbr data-start=\"1212\" data-end=\"1215\"\u003e✔ Designed for Allison 1000 transmissions\u003cbr data-start=\"1254\" data-end=\"1257\"\u003e✔ High-quality fittings and components\u003cbr data-start=\"1295\" data-end=\"1298\"\u003e✔ Helps prevent transmission fluid leaks\u003cbr data-start=\"1338\" data-end=\"1341\"\u003e✔ Designed for long-term reliability\u003cbr data-start=\"1377\" data-end=\"1380\"\u003e✔ Easy installation\u003c\/p\u003e\n\u003ch3 data-start=\"1403\" data-end=\"1411\"\u003eFits\u003c\/h3\u003e\n\u003cp data-start=\"1412\" data-end=\"1555\"\u003e• LB7 Duramax (2001-2004)\u003cbr data-start=\"1437\" data-end=\"1440\"\u003e• LLY Duramax (2004.5-2005)\u003cbr data-start=\"1467\" data-end=\"1470\"\u003e• LBZ Duramax (2006-2007)\u003cbr data-start=\"1495\" data-end=\"1498\"\u003e• LMM Duramax (2007.5-2010)\u003cbr data-start=\"1525\" data-end=\"1528\"\u003e• LML Duramax (2011-2016)\u003c\/p\u003e\n\u003cp data-start=\"1557\" data-end=\"1648\"\u003e\u003cstrong data-start=\"1557\" data-end=\"1581\"\u003eVehicle Applications\u003c\/strong\u003e\u003cbr\u003e• Chevy Silverado 2500HD \u0026amp; 3500HD\u003cbr data-start=\"1615\" data-end=\"1618\"\u003e• GMC Sierra 2500HD \u0026amp; 3500HD\u003c\/p\u003e\n\u003cp data-start=\"1650\" data-end=\"1797\"\u003eDon't wait until a small leak becomes a costly transmission repair. Upgrade your Duramax transmission cooler lines today and drive with confidence.\u003c\/p\u003e\n\u003ch3 data-start=\"1799\" data-end=\"1839\"\u003eNo Questions Asked Lifetime Warranty\u003c\/h3\u003e\n\u003cp data-start=\"1840\" data-end=\"1928\"\u003eWe stand behind every kit we sell. If you ever experience an issue, we'll make it right.\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e \u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eWhy Upgrade Your Duramax Transmission Cooler?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIf you tow heavy trailers, haul loads, or drive in hot climates, excessive transmission temperatures can shorten the life of your Allison transmission.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Fluidyne Heavy Duty Transmission Cooler provides over four times the cooling efficiency of the factory cooler and can reduce transmission temperatures by up to 20°F. Whether you're towing, daily driving, or running performance upgrades, improved cooling helps protect your transmission and maintain consistent performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eExcessive heat is one of the most significant factors that can reduce the longevity of your transmission. Over time, high temperatures can lead to premature wear, decreased performance, and costly repairs. Unfortunately, OEM transmission coolers often fall short when it comes to efficient heat dissipation, especially under heavy loads or in high-performance applications. To protect your transmission and extend its lifespan, upgrading your cooling system is essential.\u003c\/p\u003e\n\u003cp\u003eIntroducing the Fluidyne High Performance Bar and Plate Transmission Fluid Cooler, available for 2001-2016 GM 6.6L Duramax applications. Each package includes the correct Fluidyne transmission cooler and Duramax 5\/8\" Transmission Cooler Line Kit for your selected year range and engine combination.\u003c\/p\u003e\n\u003cp\u003eDesigned with the densest fins per inch available on the market, the Fluidyne cooler provides unmatched cooling performance. Its fully welded internal splitter plates prevent fluid contamination between hot and cold sides, ensuring the purity and effectiveness of your transmission fluid. Constructed from aerospace-grade aluminum using bar and plate technology, this cooler maximizes heat exchange while minimizing pressure drop, offering a perfect balance of efficiency and durability.\u003c\/p\u003e\n\u003cp\u003eThis cooler is a direct replacement for your factory unit, utilizing existing factory mounts for an easy, hassle-free installation. Finished with a proprietary powder-coated heat-wicking compound, it further enhances heat transfer efficiency. Backed by a limited lifetime warranty, the Fluidyne cooler is engineered to deliver long-term reliability and help keep your Allison transmission operating at cooler, safer temperatures.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOver four times the heat dissipation capacity compared to stock coolers\u003c\/li\u003e\n\u003cli\u003eDirect bolt-in replacement for easy installation\u003c\/li\u003e\n\u003cli\u003eMaximum fin density for superior cooling\u003c\/li\u003e\n\u003cli\u003eFully welded internal splitter plates to prevent fluid contamination\u003c\/li\u003e\n\u003cli\u003ePressure tested up to 250 PSI to ensure leak-free performance and long-term reliability. \u003c\/li\u003e\n\u003cli\u003eAerospace-grade aluminum with bar and plate construction for optimal durability\u003c\/li\u003e\n\u003cli\u003eProprietary fin design for enhanced thermal performance\u003c\/li\u003e\n\u003cli\u003ePowder-coated with a specialized heat-wicking compound\u003c\/li\u003e\n\u003cli\u003eLimited lifetime warranty for peace of mind\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"309\" data-end=\"328\"\u003e\u003cstrong data-start=\"309\" data-end=\"328\"\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"330\" data-end=\"448\"\u003e✔ 2001-2016 Duramax\u003cbr data-start=\"381\" data-end=\"384\"\u003e✔ Chevy Silverado 2500HD \u0026amp; 3500HD\u003cbr data-start=\"417\" data-end=\"420\"\u003e✔ GMC Sierra 2500HD \u0026amp; 3500HD\u003c\/p\u003e\n\u003cp data-start=\"450\" data-end=\"550\"\u003eNot sure if this cooler fits your truck? Send us your VIN and we'll verify fitment before you order.\u003c\/p\u003e\n\u003ch3 data-start=\"1391\" data-end=\"1410\"\u003eWhat's Included\u003c\/h3\u003e\n\u003cp data-start=\"1412\" data-end=\"1655\"\u003e✔ Duramax 5\/8\" Transmission Cooler Line Kit\u003cbr data-start=\"1455\" data-end=\"1458\"\u003e✔ Fluidyne Heavy Duty Transmission Cooler\u003cbr data-start=\"1499\" data-end=\"1502\"\u003e✔ Required fittings and adapters\u003cbr data-start=\"1534\" data-end=\"1537\"\u003e✔ Model-specific components based on your selected year range\u003cbr data-start=\"1598\" data-end=\"1601\"\u003e✔ No Questions Asked Lifetime Warranty on the line kit\u003c\/p\u003e","brand":"Speed Stop Auto Repair","offers":[{"title":"2001-2002 LB7","offer_id":47652385325250,"sku":null,"price":711.0,"currency_code":"USD","in_stock":true},{"title":"2001-2002 LB7 M22","offer_id":47739032862914,"sku":null,"price":711.0,"currency_code":"USD","in_stock":true},{"title":"2003-2005 LB7\/LLY","offer_id":47652385358018,"sku":null,"price":711.0,"currency_code":"USD","in_stock":true},{"title":"2006-2010 LBZ\/LMM","offer_id":47652385390786,"sku":null,"price":702.0,"currency_code":"USD","in_stock":true},{"title":"2011-2014 LML","offer_id":47652385423554,"sku":null,"price":738.0,"currency_code":"USD","in_stock":true},{"title":"2015-2016 LML","offer_id":47652385456322,"sku":null,"price":738.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/0461\/7922\/files\/20231029_170837_0000_1.png?v=1778517908","url":"https:\/\/speedstopautorepair.com\/products\/duramax-transmission-cooler-line-kit-fluidyne-transmission-cooler-chevy-silverado-gmc-sierra-2001-2016","provider":"Speed Stop Auto Repair","version":"1.0","type":"link"}