{"product_id":"performance-radiator-for-isuzu-ascender-2003-2006-5-3l","title":"Performance Radiator for Isuzu Ascender (2003-2006) 5.3L","description":"\u003ch2\u003eHeavy-Duty All-Aluminum Performance Radiator for 2003-2006 Isuzu Ascender\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect-Fit Cooling Upgrade:\u003c\/strong\u003e Engineered to replace failure-prone factory plastic-tank units, restoring thermal efficiency and preventing high-load overheating in V8-equipped mid-size SUVs.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Ascender Thermal Failure Point\u003c\/h3\u003e\n\u003cp\u003eFactory GMT360\/GMT370 radiators rely on crimped glass-filled nylon end tanks joined to an aluminum core via rubber gaskets. Over repeated thermal cycles and elevated cooling system pressures, these composite tanks become brittle, developing micro-fractures along the crimp seams and hose necks. Under sustained towing loads or high-ambient operation, the restrictive single-row OEM core induces thermal soak, escalating coolant and automatic transmission fluid temperatures beyond safe operating thresholds.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis drop-in performance unit features 100% TIG-welded AA5052 aircraft-grade aluminum construction, eliminating failure-prone plastic tanks and mechanical crimp seals entirely. The high-density downflow racing core (18.11 in x 26.69 in x 1.02 in) features brazed aluminum multi-louvered fins designed to accelerate heat dissipation under heavy engine loads. Integrated internal transmission oil cooling channels safeguard 4L60-E\/4L70-E transmissions against fluid breakdown without modifying factory cooler lines.\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;\"\u003e2003-2006 Isuzu Ascender 5.3L V8\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;\"\u003eVortec 5300 (LM4 \/ LH6) \/ GMT360, GMT370\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;\"\u003e285-300 hp \/ 325-330 lb-ft (Approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eCore Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e18.11\" H x 26.69\" W x 1.02\" T (Downflow)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eInlet \/ Outlet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e1.26\" Inlet \/ 1.57\" Outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eTransmission Cooler\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eInternal Integrated (Engine Oil Cooler Excluded)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number \/ OEM Ref\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eAN67338 \/ DPI 2563, CU2563, CC2563, DP2563\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2003 Isuzu Ascender Base \/ Limited \/ LS \/ S (5.3L V8 LM4)\u003c\/li\u003e\n  \u003cli\u003e2004 Isuzu Ascender Base \/ Limited \/ LS \/ S (5.3L V8 LM4)\u003c\/li\u003e\n  \u003cli\u003e2005 Isuzu Ascender Limited \/ LS (5.3L V8 LH6)\u003c\/li\u003e\n  \u003cli\u003e2006 Isuzu Ascender Limited \/ LS (5.3L V8 LH6)\u003c\/li\u003e\n  \u003cli\u003e\u003cem\u003eNote: Fits 5.3L V8 models only. Does not fit 4.2L Inline-6 models.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Isuzu Heavy-Duty Towing Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle severe duty and heavy towing applications, this full-aluminum heat exchanger eliminates pressurized seam separation and maintains optimal operating temperatures under continuous load.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50459267432696,"sku":"DS-EVRAMVI8Q","price":195.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-radiator-for-isuzu-ascender-2003-2006-5-3l-1.jpg?v=1788809286","url":"https:\/\/performancechiptuning.com\/es\/products\/performance-radiator-for-isuzu-ascender-2003-2006-5-3l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}