{"product_id":"performance-water-pump-kit-for-chevrolet-silverado-2500-1999-2004-6-0l","title":"Performance Water Pump Kit for Chevrolet Silverado 2500 (1999-2004) 6.0L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHeavy-Duty Water Pump and Drive Belt Service Kit for 1999-2004 Chevrolet Silverado 2500 (GMT800)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Performance Water Pump Kit restores thermal regulation and front accessory drive belt tension on the 1999-2004 Silverado 2500 to prevent thermal runaway and costly accessory drive failures under sustained load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Chevrolet Silverado 2500 Mechanical Fatigue and Seal Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory cooling systems on the \u003cstrong\u003eGMT800\u003c\/strong\u003e platform endure severe thermal cycling and belt loads during heavy towing. The stock \u003cstrong\u003eVortec 6000 LQ4\u003c\/strong\u003e water pump suffers from premature mechanical cartridge seal failure, resulting in coolant weeping from the weep hole and bearing wash-out. Simultaneously, aging OEM spring-loaded tensioners lose torsional damping, causing belt slip, accessory drag, and high operating temperatures that compromise head gasket integrity.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis complete overhaul kit resolves mechanical weak points by pairing a precision-cast aluminum water pump housing with a reinforced internal shaft seal, high-grade bearing assembly, and an integrated OE-calibrated thermostat. The kit includes heavy-duty serpentine drive belts and high-tension steel tensioner assemblies to eliminate belt deflection and chatter. New vulcanized rubber O-rings and pre-cut gaskets ensure leak-free mating against the iron engine block, resisting cavitation erosion and thermal fatigue.\u003c\/p\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: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\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;\"\u003e1999-2004 Chevrolet Silverado 2500\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;\"\u003e6.0L Vortec LQ4 \/ GMT800\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;\"\u003e300 hp \/ 360 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;\"\u003e12580162, 12609719, 12560380, 12562458, 12703898, 19195104\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\u003e1999-2004 Chevrolet Silverado 2500 Base 6.0L V8\u003c\/li\u003e\n  \u003cli\u003e1999-2004 Chevrolet Silverado 2500 LS 6.0L V8\u003c\/li\u003e\n  \u003cli\u003e1999-2004 Chevrolet Silverado 2500 LT 6.0L V8\u003c\/li\u003e\n  \u003cli\u003e2004 Chevrolet Silverado 2500 WT 6.0L V8\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the GMT800 Silverado 2500?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 1999-2004 Chevrolet Silverado 2500 equipped with the 6.0L Vortec LQ4 engine.\u003c\/p\u003e\n\n\u003ch4\u003eAre new gaskets and a replacement thermostat included with the assembly?\u003c\/h4\u003e\n\u003cp\u003eYes, the kit includes a pre-assembled thermostat, mounting hardware, O-rings, and block gaskets required for direct replacement.\u003c\/p\u003e\n\n\u003ch3\u003eThe Chevrolet Durability Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle severe commercial duty cycles and maximum towing capacities, this cooling assembly ensures your truck maintains rock-solid thermal stability under the most demanding workload.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67544624365816,"sku":"DS-EFP2CSY1Z","price":193.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-water-pump-kit-for-chevrolet-silverado-2500-1999-2004-6-0l-1.jpg?v=1790708137","url":"https:\/\/performancechiptuning.com\/fr\/products\/performance-water-pump-kit-for-chevrolet-silverado-2500-1999-2004-6-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}