{"product_id":"upper-intake-manifold-with-gasket-for-buick-regal-1996-2004-3-8l","title":"Upper Intake Manifold with Gasket for Buick Regal (1996-2004) 3.8L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Upper Intake Manifold Kit for 1996-2004 Buick Regal (W-body)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Upper Intake Manifold replaces the failure-prone factory nylon plenum on the 1996-2004 Buick Regal to eliminate unmetered vacuum leaks and prevent coolant intrusion into the intake runners.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Buick Regal Intake Plenum Failure\u003c\/h3\u003e\n\u003cp\u003eThe factory \u003cstrong\u003eGM 3800 Series II\u003c\/strong\u003e composite manifold suffers from a notorious vulnerability surrounding the Exhaust Gas Recirculation (EGR) passage chimney. Continuous thermal cycling from recirculated exhaust gases softens and erodes the OEM plastic wall separating the hot EGR stovepipe from surrounding coolant jackets. Over time, this material fatigue leads to pinhole fractures, unmetered vacuum leaks, and catastrophic coolant migration directly into the cylinders, risking hydraulic lock and degraded combustion efficiency on the \u003cstrong\u003eW-body\u003c\/strong\u003e chassis.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eMolded from heat-stabilized, high-density polymer, this replacement upper manifold withstands intense underhood thermal expansion without localized warping or fatigue around the EGR port. Precision-engineered runner profiles maintain smooth manifold absolute pressure (MAP) dynamics and uniform cylinder air distribution. The kit integrates robust gasket sealing channels that seat the included heavy-duty port seals, preventing vacuum bypass and protecting your \u003cstrong\u003eL36\u003c\/strong\u003e engine from internal coolant consumption.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 Upper Intake Manifold (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 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: 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;\"\u003e1996-2004 Buick Regal\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;\"\u003e\n\u003cstrong\u003eGM 3800 Series II (L36 \/ L67)\u003c\/strong\u003e \/ \u003cstrong\u003eW-body\u003c\/strong\u003e\n\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, \u003cstrong\u003e89017272\u003c\/strong\u003e, 89017274, CE1413044, FH10095, SK615180, XTA016, \u003cstrong\u003e615180\u003c\/strong\u003e, 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\u003e1996-2004 Buick Regal 3.8L Gas Naturally Aspirated\u003c\/li\u003e\n  \u003cli\u003e1999 Buick Regal 3.8L Gas Supercharged\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 Regal?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 1996-2004 Buick Regal equipped with the \u003cstrong\u003eGM 3800 Series II\u003c\/strong\u003e engine. \u003cstrong\u003eOnly the 3.8L V6 applications listed are covered; it does not fit other displacements, Series I engines, or unlisted model years.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eWhat is the critical installation procedure for this intake?\u003c\/h4\u003e\n\u003cp\u003eInstall only on a cool engine, replace all disturbed coolant O-rings, and torque all manifold fasteners to factory sequence specifications (89 in-lbs) to avoid cracking the composite flange.\u003c\/p\u003e\n\n\u003ch3\u003eThe Buick Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered for bulletproof daily operation, this plenum restoration cures the primary failure point of the 3800 platform, delivering consistent vacuum sealing, zero lean codes, and leak-free reliability.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68038500221176,"sku":"DS-EUHY9GGC0","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-buick-regal-1996-2004-3-8l-1.jpg?v=1794200807","url":"https:\/\/performancechiptuning.com\/es\/products\/upper-intake-manifold-with-gasket-for-buick-regal-1996-2004-3-8l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}