{"product_id":"performance-water-pump-kit-for-chevrolet-express-2500-3500-2007-2020-4-8l-6-0l","title":"Performance Water Pump Kit for Chevrolet Express 2500,3500 (2007-2020) 4.8L 6.0L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHeavy-Duty Water Pump Kit for 2007-2020 Chevrolet Express 2500, 3500 (GMT610)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Performance Water Pump Kit replaces worn or failing factory cooling assemblies on 2007-2020 Chevrolet Express 2500 and 3500 vans to maintain optimal coolant circulation and prevent thermal degradation under heavy hauling duty cycles.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Chevrolet Express 2500, 3500 Cooling Cavitation \u0026amp; Seal Breakdown\u003c\/h3\u003e\n\u003cp\u003eFactory cooling systems on the \u003cstrong\u003eGMT610\u003c\/strong\u003e commercial platform endure rigorous thermal cycles and sustained engine loads. Over time, the OEM mechanical unit's internal dynamic shaft seals degrade, resulting in weeping from the telltale vent hole, bearing play, and catastrophic impeller failure. Concurrently, factory thermostat housings on the \u003cstrong\u003eLS-based Vortec (LY2, L20, LY6, L96)\u003c\/strong\u003e engines face warping and gasket compression set, causing pressure drops across the radiator channels and localized hot spots in the cylinder heads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered for high-durability commercial duty, this direct replacement water pump features precision-cast aluminum housing geometry optimized for uniform fluid dynamic flow. An upgraded internal bearing assembly resists radial runout under belt drive tension, while a heavy-duty unitized shaft seal eliminates weep hole leakage. Paired with a direct-replacement thermostat and reinforced mating gaskets, this assembly prevents cavitation and ensures precise thermal regulation under peak payload and fleet trailering conditions.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 Engine Water Pump\u003c\/li\u003e\n  \u003cli\u003e1 Thermostat Housing\u003c\/li\u003e\n  \u003cli\u003e1 Thermostat\u003c\/li\u003e\n  \u003cli\u003e2 Rectangular Gaskets\u003c\/li\u003e\n  \u003cli\u003e1 Oval Gasket\u003c\/li\u003e\n  \u003cli\u003e2 Mounting Bolts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100% style=\" border-collapse: collapse border: solid font-size: min-width:\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;\"\u003e2007-2020 Chevrolet Express 2500, 3500\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;\"\u003eVortec 4.8L (LY2\/L20), 6.0L (LY6\/L96) \/ GMT610\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;\"\u003e280-342 hp \/ 295-380 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;\"\u003e12681417, 12600767, AW6009\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2007-2020 Chevrolet Express 2500 (4.8L V8, 6.0L V8)\u003c\/li\u003e\n  \u003cli\u003e2007-2020 Chevrolet Express 3500 (4.8L V8, 6.0L V8)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the GMT610 Express 2500, 3500?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2007-2020 Chevrolet Express 2500 and 3500 equipped with the \u003cstrong\u003eVortec 4.8L\u003c\/strong\u003e or \u003cstrong\u003eVortec 6.0L\u003c\/strong\u003e V8 engines; verify engine displacement prior to installation as it does not fit 4.3L V6 or Duramax diesel models.\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to bleed the system following installation?\u003c\/h4\u003e\n\u003cp\u003eYes, thoroughly burp and bleed the engine cooling system to prevent trapped air pockets from creating hot spots or false temperature readings.\u003c\/p\u003e\n\n\u003ch3\u003eThe Chevrolet Commercial Durability Standard\u003c\/h3\u003e\n\u003cp\u003eSevere-duty commercial haulers demand unyielding cooling efficiency. Engineered to sustain rigorous commercial towing demands, this water pump assembly delivers dependable thermal equilibrium on demanding fleet routes.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67545107595512,"sku":"DS-EEH30NPFP","price":108.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-water-pump-kit-for-chevrolet-express-2500-3500-2007-2020-4-8l-6-0l-1.jpg?v=1790716840","url":"https:\/\/performancechiptuning.com\/products\/performance-water-pump-kit-for-chevrolet-express-2500-3500-2007-2020-4-8l-6-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}