{"product_id":"performance-radiator-for-jeep-grand-cherokee-1999-2004-4-0l","title":"Performance Radiator for Jeep Grand Cherokee (1999-2004) 4.0L","description":"\u003ch2\u003eHeavy-Duty All-Aluminum Performance Radiator for 1999-2004 Jeep Grand Cherokee\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect-fit 4-row aluminum replacement engineered to maximize thermal transfer and eliminate plastic end-tank failures on the 4.0L PowerTech inline-six.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Grand Cherokee Thermal Degradation Problem\u003c\/h3\u003e\n\u003cp\u003eFactory WJ radiators rely on crimped plastic end tanks paired with a thin single-row aluminum core. Constant heat cycling from the cast-iron 4.0L block causes the polymer tanks and internal rubber gaskets to embrittle, leading to seam separation and coolant loss. Under off-camber trail loads, continuous low-speed rock crawling, or high-ambient towing, the thin stock core suffers from severe heat soak, pushing engine and transmission temperatures past safe operating margins.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis drop-in unit features an all-aluminum crossflow construction with a 4-row racing tube core, fully TIG-welded to rigid aluminum end tanks. By eliminating crimped plastic junctions, it eliminates high-pressure leak points entirely. The expanded 4-row layout significantly increases fluid capacity and fin surface contact area to accelerate heat dissipation. It includes an integrated internal transmission oil cooler specifically matched for the 42RE automatic gearbox, maintaining optimal fluid viscosity under heavy loads.\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;\"\u003e1999-2004 Jeep Grand Cherokee\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;\"\u003e4.0L AMC 242 (PowerTech) \/ WJ\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;\"\u003e195 hp \/ 230 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;\"\u003eDPI 2262, 52079428AB, 52079428AC, 52079428AD, CU2262\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eCore Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e29-1\/16 in W x 23-7\/16 in H (4-Row)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eInlet \/ Outlet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e1-1\/2 in Passenger Side \/ 1-1\/2 in Driver Side\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1999-2004 Jeep Grand Cherokee Laredo 4.0L L6 Automatic\u003c\/li\u003e\n  \u003cli\u003e1999-2004 Jeep Grand Cherokee Limited 4.0L L6 Automatic\u003c\/li\u003e\n  \u003cli\u003e2002 Jeep Grand Cherokee Sport 4.0L L6 Automatic\u003c\/li\u003e\n  \u003cli\u003e2004 Jeep Grand Cherokee SE 4.0L L6 Automatic\u003c\/li\u003e\n  \u003cli\u003e2004 Jeep Grand Cherokee Special Edition 4.0L L6 Automatic\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Jeep Off-Road Durability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle severe trail vibrations and high-load towing without structural fatigue, this 100% leak-tested all-aluminum radiator delivers reliable, sustained cooling under demanding off-road conditions.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50426196852984,"sku":"DS-E9EJIKWWW","price":339.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-radiator-for-jeep-grand-cherokee-1999-2004-4-0l-1.jpg?v=1788397304","url":"https:\/\/performancechiptuning.com\/fr\/products\/performance-radiator-for-jeep-grand-cherokee-1999-2004-4-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}