{"product_id":"performance-radiator-for-gmc-c-k-trucks-1988-2000-4-3l-5-0l-5-7l-6-5l-7-4l","title":"Performance Radiator for GMC C\/K Trucks (1988-2000) 4.3L 5.0L 5.7L 6.5L 7.4L","description":"\u003ch2\u003eDirect-Fit Performance All-Aluminum Radiator for 1988-2000 GMC C\/K Trucks\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Performance Radiator replaces failure-prone factory plastic-tank units on 1988-2000 GMC C\/K Trucks to maximize thermal heat dissipation and prevent coolant loss under sustained towing and hauling loads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC C\/K Trucks Cooling Inefficiencies and Plastic Fatigue\u003c\/h3\u003e\n\u003cp\u003eFactory radiators on the \u003cstrong\u003eGMT400\u003c\/strong\u003e platform rely on crimped, injection-molded plastic end tanks mated to an aluminum core via elastomeric gaskets. Decades of heat cycling cause the OEM plastic to embrittle, leading to cracked tank necks, stress fractures near inlet and outlet ports, and compromised crimp seams under standard operating pressures. Furthermore, high-displacement workhorse platforms such as the \u003cstrong\u003eVortec 5700 (L31)\u003c\/strong\u003e, \u003cstrong\u003eVortec 7400 (L29)\u003c\/strong\u003e, and \u003cstrong\u003e6.5L Detroit Diesel\u003c\/strong\u003e overwhelm stock tube densities under heavy towing, resulting in heat soak, elevated transmission fluid temperatures, and unmanageable thermal spikes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis upgraded performance unit features an all-aluminum assembly with furnace-brazed tubes and hand-welded \u003cstrong\u003eTIG\u003c\/strong\u003e aluminum end tanks, permanently eliminating the failure point of crimped plastic seals. The heavy-duty tube-and-fin core architecture increases convective surface area, dramatically accelerating heat transfer and reducing thermal recovery times. Engineered as a direct drop-in replacement, it utilizes factory mounting geometry and incorporates precision internal transmission oil cooler ports to ensure straightforward plumbing and structural reliability under maximum load.\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; margin-bottom: 20px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e1988-2000 GMC C\/K Trucks\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e4.3L, 5.0L, 5.7L, 6.5L, 7.4L \/ \u003cstrong\u003eGMT400\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e160-290 hp \/ 235-410 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003eCC1520\u003c\/strong\u003e, \u003cstrong\u003eMC1520\u003c\/strong\u003e, \u003cstrong\u003eEC1520\u003c\/strong\u003e, \u003cstrong\u003eCU1520\u003c\/strong\u003e, \u003cstrong\u003eAE1520\u003c\/strong\u003e, \u003cstrong\u003e1520\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1988-2000 GMC C1500 (4.3L V6, 5.0L V8, 5.7L V8, 6.5L Diesel)\u003c\/li\u003e\n  \u003cli\u003e1988-2000 GMC K1500 (4.3L V6, 5.0L V8, 5.7L V8, 6.5L Diesel)\u003c\/li\u003e\n  \u003cli\u003e1988-2000 GMC C2500 (5.0L V8, 5.7L V8, 6.5L Diesel, 7.4L V8)\u003c\/li\u003e\n  \u003cli\u003e1988-2000 GMC K2500 (5.0L V8, 5.7L V8, 6.5L Diesel, 7.4L V8)\u003c\/li\u003e\n  \u003cli\u003e1988-2000 GMC C3500 (5.7L V8, 6.5L Diesel, 7.4L V8)\u003c\/li\u003e\n  \u003cli\u003e1988-2000 GMC K3500 (5.7L V8, 6.5L Diesel, 7.4L V8)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the GMT400 C\/K Trucks?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 1988-2000 GMC C\/K Trucks equipped with the \u003cstrong\u003eGMT400\u003c\/strong\u003e chassis and matching 1520 core footprint.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this radiator include the internal automatic transmission cooler?\u003c\/strong\u003e\u003cbr\u003e Yes, it features integrated brass cooler ports designed to connect directly with factory transmission cooling lines.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Heavy-Duty Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle severe duty cycles, high-payload trailering, and prolonged steep grade climbs without the thermal instability or fluid leaks inherent to aged factory systems.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50593851834616,"sku":"DS-EG9D9ZKF8","price":390.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-radiator-for-gmc-c-k-trucks-1988-2000-4-3l-5-0l-5-7l-6-5l-7-4l-1.jpg?v=1790052301","url":"https:\/\/performancechiptuning.com\/fr\/products\/performance-radiator-for-gmc-c-k-trucks-1988-2000-4-3l-5-0l-5-7l-6-5l-7-4l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}