{"product_id":"performance-oil-pump-timing-chain-water-pump-kit-for-chevrolet-tahoe-2000-2003-5-3l","title":"Performance Oil Pump Timing Chain \u0026 Water Pump Kit for Chevrolet Tahoe (2000-2003) 5.3L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHeavy-Duty Oil Pump, Timing Chain \u0026amp; Water Pump Kit for 2000-2003 Chevrolet Tahoe (GMT800)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Performance Oil Pump Timing Chain \u0026amp; Water Pump Kit restores critical hydraulic oil pressure, valve timing precision, and coolant flow on the 2000-2003 Tahoe to eliminate valvetrain clatter and engine overheating.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Chevrolet Tahoe Lubrication and Timing Shortcomings\u003c\/h3\u003e\n\u003cp\u003eFactory Gen III Small Block V8s in the \u003cstrong\u003eGMT800\u003c\/strong\u003e generation are notorious for oil pressure degradation over time. The stock \u003cstrong\u003eLM7\u003c\/strong\u003e oil pump relies on an internal pressure-relief valve that frequently scores its bore and sticks open, causing lifter tick and dangerously low pressure at hot idle. Concurrently, factory single-row timing chains experience link elongation and stretch past 100,000 miles, introducing camshaft timing retard and timing-slop under load. Furthermore, aging OEM water pumps suffer bearing play and weep-hole failure, creating thermal instability that stresses head gaskets under heavy payload and towing environments.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive front-end service assembly resolves critical mechanical failure points before catastrophic oil starvation or valve timing desynchronization occurs. Featuring an upgraded high-output gerotor oil pump, this assembly ensures rapid oil delivery to the top end and valvetrain across all RPM ranges. The included heavy-duty timing set utilizes heat-treated sprockets and a pre-stretched chain to maintain tight camshaft-to-crankshaft phasing without mechanical backlash. Coupled with a cast-aluminum, severe-duty water pump and a complete timing cover gasket set with elastomeric seals, this overhaul package eliminates coolant leaks, prevents oil aerating, and restores peak thermal efficiency to your Vortec drivetrain.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 Oil Pump\u003c\/li\u003e\n  \u003cli\u003e1 Timing Chain Kit (chain and sprockets)\u003c\/li\u003e\n  \u003cli\u003e1 Timing Cover Gasket Set\u003c\/li\u003e\n  \u003cli\u003e1 Water Pump\u003c\/li\u003e\n  \u003cli\u003eAssorted seals and O-rings\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: 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;\"\u003e2000-2003 Chevrolet Tahoe\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 5300 LM7 \/ 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;\"\u003e285 hp \/ 325 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;\"\u003eN\/A\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\u003e2000 Chevrolet Tahoe 5.3L V8 (Vortec 5300 LM7)\u003c\/li\u003e\n  \u003cli\u003e2001 Chevrolet Tahoe 5.3L V8 (Vortec 5300 LM7)\u003c\/li\u003e\n  \u003cli\u003e2002 Chevrolet Tahoe 5.3L V8 (Vortec 5300 LM7 \/ L59)\u003c\/li\u003e\n  \u003cli\u003e2003 Chevrolet Tahoe 5.3L V8 (Vortec 5300 LM7 \/ L59)\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 GMT800 Tahoe?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2000-2003 Chevrolet Tahoe equipped with the \u003cstrong\u003eLM7\u003c\/strong\u003e 5.3L engine. \u003cstrong\u003eConfirm engine displacement before ordering; this kit does not fit 5.7L Vortec Gen I engines, 4.3L V6 platforms, or 8.1L Big Block configurations.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to replace the oil pump pick-up tube O-ring during this installation?\u003c\/h4\u003e\n\u003cp\u003eYes, correct installation of the included pick-up tube O-ring is essential; an improperly seated O-ring will draw air into the oil gallery, resulting in severe cavitation and immediate oil pressure loss.\u003c\/p\u003e\n\n\u003ch3\u003eThe Chevrolet Truck Standard\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eGMT800\u003c\/strong\u003e platform was engineered for relentless towing, payload, and off-road utility. Rebuilding the timing and lubrication systems with heavy-duty internal components is designed to ensure that your 5.3L Vortec V8 delivers reliable oil pressure and cooling under maximum load.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67545426591992,"sku":"DS-EEK0CGYEY","price":194.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-oil-pump-timing-chain-water-pump-kit-for-chevrolet-tahoe-2000-2003-5-3l-1.jpg?v=1790723712","url":"https:\/\/performancechiptuning.com\/products\/performance-oil-pump-timing-chain-water-pump-kit-for-chevrolet-tahoe-2000-2003-5-3l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}