{"product_id":"upper-intake-manifold-with-gasket-for-chevrolet-impala-2000-2005-3-8l","title":"Upper Intake Manifold with Gasket for Chevrolet Impala (2000-2005) 3.8L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Replacement Upper Intake Manifold Kit for 2000-2005 Chevrolet Impala (W-Body)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The upper intake manifold kit replaces the degraded factory intake plenum on the 2000-2005 Impala to eliminate vacuum leaks and prevent catastrophic internal coolant migration.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Chevrolet Impala EGR Bore Degradation\u003c\/h3\u003e\n\u003cp\u003eThe factory composite nylon upper plenum on the GM \u003cstrong\u003e3800 Series II L36\u003c\/strong\u003e engine suffers from a documented thermal failure point adjacent to the exhaust gas recirculation (EGR) passage. Continuous heat cycling from the internal metallic EGR stovepipe softens and erodes the surrounding composite material. Over time, this structural fatigue compromises the adjoining coolant bypass passages, allowing pressurized engine coolant to seep directly into the intake runners, lower intake valley, and cylinders, risking misfires, catalytic converter contamination, or hydraulic lock.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis replacement upper plenum is molded from high-grade, heat-stabilized thermoplastic engineered to resist prolonged thermal soak from exhaust gas recirculation. Calibrated runner geometry matches factory volumetric efficiency and manifold absolute pressure (MAP) parameters without requiring ECM recalibration. The kit includes an upgraded port gasket carrier featuring molded elastomeric perimeter seals, replacement throttle body studs, fuel pressure regulator hardware, and precision O-rings to completely restore structural vacuum sealing across the entire \u003cstrong\u003eW-Body\u003c\/strong\u003e induction tract.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 Upper Intake Manifold (plastic plenum)\u003c\/li\u003e\n  \u003cli\u003e1 Upper Intake Manifold Gasket with port seals\u003c\/li\u003e\n  \u003cli\u003eFuel pressure regulator spring\u003c\/li\u003e\n  \u003cli\u003eThrottle body studs\u003c\/li\u003e\n  \u003cli\u003eO-rings and installation fittings\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;\"\u003e2000-2005 Chevrolet Impala\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;\"\u003e3.8L L36 V6 \/ W-Body\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;\"\u003e200 hp \/ 225 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;\"\u003e106001, 217454, 871601, 12537425, 24506013, 89017272, 89017274, CE1413044, FH10095, SK615180, XTA016, 615180, 11396399\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\u003e2000-2005 Chevrolet Impala 3.8L V6 Gas Naturally Aspirated (L36)\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 W-Body Impala?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2000-2005 Chevrolet Impala equipped with the \u003cstrong\u003e3.8L L36\u003c\/strong\u003e engine. \u003cstrong\u003eThis kit does not fit 3.4L V6 base models or supercharged 3.8L L67 SS models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eDo the intake manifold bolts require a specific torque sequence?\u003c\/h4\u003e\n\u003cp\u003eYes, always torque plenum fasteners in the factory-specified spiral sequence from the center outward to 89 lb-in to prevent warpage and port seal pinch.\u003c\/p\u003e\n\n\u003ch3\u003eThe Chevrolet Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to deliver long-haul reliability, this replacement plenum restores factory throttle response, vacuum stability, and leak-free performance for your daily-driven \u003cstrong\u003eGM 3800 Series II\u003c\/strong\u003e powertrain.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68038515687672,"sku":"DS-E3HETLMD9","price":99.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/upper-intake-manifold-with-gasket-for-chevrolet-impala-2000-2005-3-8l-1.jpg?v=1794200935","url":"https:\/\/performancechiptuning.com\/es\/products\/upper-intake-manifold-with-gasket-for-chevrolet-impala-2000-2005-3-8l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}