{"product_id":"performance-radiator-for-gmc-sierra-2014-2018-5-3l-6-2l","title":"Performance Radiator for GMC Sierra (2014-2018) 5.3L 6.2L","description":"\u003ch2\u003eHigh-Capacity Aluminum Radiator for 2014-2018 GMC Sierra\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eReplaces the restrictive and thermal-limited factory radiator to lower coolant temperatures and prevent heat soak during heavy towing or aggressive driving.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Sierra Thermal Weakness\u003c\/h3\u003e\n\u003cp\u003eThe factory radiators equipped on the 2014-2018 GMC Sierra platforms are built with single or dual-row aluminum cores crimped to plastic end tanks. Over time and under high thermal loads—such as hauling heavy trailers or navigating steep inclines—these plastic tanks become brittle and develop micro-cracks along the crimped seams. Furthermore, the OEM core lacks the required fluid capacity and surface area to efficiently dissipate heat from the high-compression L83 or L86 V8 engines, leading to rapid heat soak. When the engine control module (ECM) detects these elevated coolant temperatures, it actively retards ignition timing, robbing the truck of horsepower and torque to protect the block from detonation.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis performance radiator eliminates factory failure points through a full AA5052 aluminum construction, entirely replacing the brittle plastic tanks with TIG-welded aluminum counterparts. The upgraded 3-row racing design expands the core size to 34\" x 16.85\", significantly increasing both fluid capacity and cooling surface area. This enhanced thermodynamic efficiency improves cooling by 35% to 45% over stock units, stabilizing operating temperatures even under continuous maximum gross vehicle weight rating (GVWR) loads. Additionally, an OEM-style brass petcock drain replaces the prone-to-stripping plastic drain plugs found in standard aftermarket replacements, ensuring long-term durability, leak prevention, and ease of routine maintenance.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e2014-2018 GMC Sierra 1500\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eEngine \/ Chassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eEcoTec3 L83 \u0026amp; L86 \/ K2XX\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eStock Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e355-420 hp \/ 383-460 lb-ft (Approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2018 GMC Sierra 1500 5.3L V8\u003c\/li\u003e\n  \u003cli\u003e2018 GMC Sierra 1500 6.2L V8\u003c\/li\u003e\n  \u003cli\u003e2017 GMC Sierra 1500 5.3L V8\u003c\/li\u003e\n  \u003cli\u003e2017 GMC Sierra 1500 6.2L V8\u003c\/li\u003e\n  \u003cli\u003e2016 GMC Sierra 1500 5.3L V8\u003c\/li\u003e\n  \u003cli\u003e2016 GMC Sierra 1500 6.2L V8\u003c\/li\u003e\n  \u003cli\u003e2015 GMC Sierra 1500 5.3L V8\u003c\/li\u003e\n  \u003cli\u003e2015 GMC Sierra 1500 6.2L V8\u003c\/li\u003e\n  \u003cli\u003e2014 GMC Sierra 1500 5.3L V8\u003c\/li\u003e\n  \u003cli\u003e2014 GMC Sierra 1500 6.2L V8\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe GMC Durability Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle the extreme rigors of hauling and payload management, this cooling upgrade ensures your Sierra maintains optimal thermal efficiency, protecting your drivetrain and ensuring consistent towing power without the threat of overheating.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50106926104824,"sku":"DS-E2F76WPON","price":299.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-radiator-for-gmc-sierra-2014-2018-5-3l-6-2l-1.webp?v=1785789138","url":"https:\/\/performancechiptuning.com\/products\/performance-radiator-for-gmc-sierra-2014-2018-5-3l-6-2l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}