{"product_id":"performance-radiator-for-chevrolet-express-2003-2005-4-3l-automatic","title":"Performance Radiator for Chevrolet Express (2003-2005) 4.3L Automatic","description":"\u003ch2\u003eHeavy-Duty All-Aluminum Performance Radiator for 2003-2005 Chevrolet Express\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Directly replaces the failure-prone factory plastic-tank radiator with a high-efficiency, TIG-welded 3-row all-aluminum crossflow cooling unit engineered to manage elevated thermal loads during heavy towing and commercial duty cycles.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Express Thermal Bottleneck\u003c\/h3\u003e\n\u003cp\u003eThe factory radiator installed in GMT610 platforms utilizes mechanically crimped plastic end tanks over a thin aluminum core. Over sustained commercial operation and heat cycles, the plastic embrittles, leading to stress cracks around the inlet\/outlet necks and tank-to-core seam blowouts. Furthermore, high engine-bay ambient temperatures cause thermal soaking in stop-and-go fleet driving, pushing transmission fluid and engine coolant temperatures past safe operating thresholds.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eConstructed with aircraft-grade TIG-welded aluminum tanks and a reinforced 3-row brazed tube-and-fin core, this unit dramatically increases coolant capacity and surface heat dissipation over OEM specifications. Measuring 17-1\/4\" H x 30-1\/2\" W in the core area, the crossflow design optimizes thermal transfer while resisting high-pressure spikes. It features an integrated internal transmission oil cooler and precision CNC-machined 1.34\" inlet and 1.57\" outlet connections for direct bolt-on installation without plumbing modifications.\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;\"\u003e2003-2005 Chevrolet Express 1500 \/ 2500\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;\"\u003e4.3L Vortec 4300 (LU3) \/ GMT610\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 \/ 260 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 2716, CU2716, 89019164, 89019163, 15751212\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2003 Chevrolet Express 1500 4.3L V6 Automatic\u003c\/li\u003e\n  \u003cli\u003e2003 Chevrolet Express 2500 4.3L V6 Automatic\u003c\/li\u003e\n  \u003cli\u003e2004 Chevrolet Express 1500 4.3L V6 Automatic\u003c\/li\u003e\n  \u003cli\u003e2004 Chevrolet Express 2500 4.3L V6 Automatic\u003c\/li\u003e\n  \u003cli\u003e2005 Chevrolet Express 1500 4.3L V6 Automatic\u003c\/li\u003e\n  \u003cli\u003e2005 Chevrolet Express 2500 4.3L V6 Automatic\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Chevrolet Heavy-Duty Fleet Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle severe commercial duty cycles, high-payload hauling, and continuous fleet service without thermal degradation, fluid leakage, or pressure-induced tank failures.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50426439827704,"sku":"DS-ED5YT30SB","price":234.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-radiator-for-chevrolet-express-2003-2005-4-3l-automatic-1.jpg?v=1788398514","url":"https:\/\/performancechiptuning.com\/es\/products\/performance-radiator-for-chevrolet-express-2003-2005-4-3l-automatic","provider":"Performance Chip Tuning","version":"1.0","type":"link"}