{"product_id":"upper-intake-manifold-with-gasket-for-pontiac-grand-prix-1997-2003-3-8l","title":"Upper Intake Manifold with Gasket for Pontiac Grand Prix (1997-2003) 3.8L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eReinforced Upper Intake Manifold Replacement for 1997-2003 Pontiac Grand Prix (W-Body)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Upper Intake Manifold with Gasket replaces the failure-prone factory plenum on the 1997-2003 Pontiac Grand Prix to eliminate unmetered vacuum leaks and prevent catastrophic internal coolant loss.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Pontiac Grand Prix EGR Burn-Through and Plenum Warpage\u003c\/h3\u003e\n\u003cp\u003eThe factory composite upper plenum on the \u003cstrong\u003eGM 3800 Series II\u003c\/strong\u003e engine suffers from a notorious structural vulnerability adjacent to the exhaust gas recirculation (EGR) passage. Continuous thermal cycling from hot exhaust gases causes the factory nylon to degrade, thin, and rupture around the internal stovepipe. Once breached, pressurized coolant bypasses the seal directly into the lower intake runners, causing rough idling, cylinder misfires, severe hydraulic lock risks, and bearing washout across the \u003cstrong\u003eL36\u003c\/strong\u003e engine assembly.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered from premium heat-stabilized composite polymer, this replacement upper plenum resists thermal fatigue and prevents localized burnout around the EGR port. Precision-engineered sealing grooves maintain uniform clamp load to prevent runner distortion under heat soak and continuous engine vacuum. Supplied with an upgraded port-matched perimeter gasket and essential mounting hardware, this manifold assembly restores factory intake manifold absolute pressure (MAP) readings, protects the combustion chambers, and secures long-term valvetrain reliability.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 Upper Intake Manifold (Reinforced Composite Plastic)\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 Assorted 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;\"\u003e1997-2003 Pontiac Grand Prix\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 (3800 Series II) \/ 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\u003e1997-2003 Pontiac Grand Prix 3.8L V6 Gas Naturally Aspirated\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 Grand Prix?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 1997-2003 Pontiac Grand Prix equipped with the naturally aspirated \u003cstrong\u003e3.8L L36\u003c\/strong\u003e engine. \u003cstrong\u003eDoes not fit supercharged L67 models, which utilize a dedicated cast-aluminum intake manifold and Eaton M90 supercharger.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eWhat is the recommended installation procedure for the manifold fasteners?\u003c\/h4\u003e\n\u003cp\u003eInstall on a completely cold engine and torque all upper intake fasteners in the factory crisscross sequence to 89 in-lbs (10 Nm) to avoid uneven carrier stress and gasket pinching.\u003c\/p\u003e\n\n\u003ch3\u003eThe Pontiac Performance Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to withstand the demanding thermal dynamics of GM's legendary 3800 V6 platform, this intake manifold restores vital structural integrity and factory airflow calibration, giving your performance sedan dependable sealing mile after mile.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68038577520888,"sku":"DS-EKPY3B5LY","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-pontiac-grand-prix-1997-2003-3-8l-1.jpg?v=1794201325","url":"https:\/\/performancechiptuning.com\/de\/products\/upper-intake-manifold-with-gasket-for-pontiac-grand-prix-1997-2003-3-8l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}