{"product_id":"performance-radiator-for-chevrolet-trailblazer-2002-2009-4-2l","title":"Performance Radiator for Chevrolet Trailblazer (2002-2009) 4.2L","description":"\u003ch2\u003eHeavy-Duty All-Aluminum 3-Row Performance Radiator for 2002-2009 Chevrolet Trailblazer\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Replaces the failure-prone factory cooling assembly with an all-aluminum 3-row core to maximize heat rejection and fluid capacity under heavy load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Trailblazer Thermal Fatigue and End-Tank Failure\u003c\/h3\u003e\n\u003cp\u003eFactory GMT360 radiators rely on crimped plastic end tanks mated to a single-row core with rubber gaskets. Prolonged heat cycling causes the plastic to embrittle and crack near the upper inlet neck, while the crimp seams degrade and blow out under cooling system pressure. Furthermore, the limited stock core volume struggles with thermal dissipation during towing or continuous high-load driving, inducing critical engine and transmission heat soak.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eConstructed entirely from aircraft-grade aluminum, this direct-fit radiator features a high-density 3-row TIG-welded core (18.1 in H x 26.75 in W) that completely eliminates bonded plastic seams. TIG-welded aluminum end tanks withstand high pressures and severe vibration. An integrated M14x1.5 bottom-tank transmission oil cooler regulates 4L60E fluid temperatures, maintaining continuous cooling performance under severe operating environments.\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;\"\u003e2002-2009 Chevrolet Trailblazer (4.2L Automatic)\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;\"\u003eAtlas LL8 (Vortec 4200) \/ GMT360\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;\"\u003e275-291 hp \/ 275-277 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;\"\u003e18.1 in H x 26.75 in W (3-Row Core)\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;\"\u003e1.30 in \/ 1.57 in\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;\"\u003eM14x1.5 Threaded Fittings (Bottom Tank)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eInterchange Part Numbers\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eDPI 2458, CU2458, Q2458, RAD2458, 432403, 21505, GM3010420, GM3010449, IZ3010147, 52381210, 15196385\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2002-2009 Chevrolet Trailblazer (4.2L L6 Vortec 4200 Automatic)\u003c\/li\u003e\n  \u003cli\u003eNote: Fits 4.2L Inline-6 models only; Does not fit 5.3L or 6.0L V8 models.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Chevrolet Durability and Towing Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered specifically for the demands of GMT360 truck platforms, this cooling system upgrade withstands heavy payload capacities, sustained mountain grades, and extreme ambient temperatures without fluid degradation or structural fatigue.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50426251772152,"sku":"DS-EUOFIGUAG","price":244.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-radiator-for-chevrolet-trailblazer-2002-2009-4-2l-1.jpg?v=1788397544","url":"https:\/\/performancechiptuning.com\/fr\/products\/performance-radiator-for-chevrolet-trailblazer-2002-2009-4-2l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}