{"product_id":"upper-intake-manifold-with-gasket-for-oldsmobile-intrigue-1998-1999-3-8l","title":"Upper Intake Manifold with Gasket for Oldsmobile Intrigue (1998-1999) 3.8L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Replacement Upper Intake Manifold with Gasket for 1998-1999 Oldsmobile Intrigue (W-Body)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The upper intake manifold assembly replaces the failure-prone composite intake plenum on the 1998-1999 Oldsmobile Intrigue to resolve internal coolant leaks, restore manifold vacuum integrity, and prevent hydro-lock.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Oldsmobile Intrigue Composite Plenum Failure\u003c\/h3\u003e\n\u003cp\u003eThe factory nylon composite upper intake on the \u003cstrong\u003eGM 3800 Series II L36\u003c\/strong\u003e engine suffers from a well-documented failure adjacent to the exhaust gas recirculation (EGR) passage tube. Continuous thermal cycling from unshielded, high-temperature exhaust gas degrades the plastic wall separating the EGR chimney from the coolant crossover passage. Over time, the synthetic material softens, pinholes, and warps. This structural fatigue pulls pressurized engine coolant directly into the intake plenum runners, causing misfires, severe vacuum loss, unmetered air intrusion, high coolant loss, and catastrophic hydraulic lockup of the cylinders.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis replacement upper intake manifold is manufactured with heat-stabilized, high-density polymer compounds designed to withstand elevated underhood operating temperatures and chemical degradation from ethylene glycol. Engineered with reinforced structural bulkheads, precision runner geometries, and fortified material thickness around critical thermal pathways, this plenum restores balanced cylinder airflow dynamics and airtight sealing. Matched with high-grade perimeter port gaskets featuring molded elastomer seals, this assembly withstands aggressive engine expansion cycles and permanently seals unmetered air and internal coolant channels.\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 as pictured\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;\"\u003e1998-1999 Oldsmobile Intrigue\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 3800 Series II (L36) \/ GM 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;\"\u003e195 hp \/ 220 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\u003eOldsmobile Intrigue 3.8L Gas Naturally Aspirated (1998-1999)\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 Intrigue?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 1998-1999 Oldsmobile Intrigue equipped with the \u003cstrong\u003e3800 Series II L36\u003c\/strong\u003e engine. \u003cstrong\u003eDoes not fit 1999-2002 Oldsmobile Intrigue models equipped with the 3.5L DOHC LX5 \"Shortstar\" V6 engine.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eWhat critical procedure should be followed during installation?\u003c\/h4\u003e\n\u003cp\u003eInstall only on a completely cold engine and torque all manifold fasteners to exact factory sequence and torque specifications to prevent warpage or stress-cracking.\u003c\/p\u003e\n\n\u003ch3\u003eThe Oldsmobile Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered for exact factory fitment on GM's classic midsize cruiser, this upper plenum eliminates factory failure points to restore long-term drivetrain reliability and smooth naturally aspirated performance.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68038559629560,"sku":"DS-EPQFZ3IU8","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-oldsmobile-intrigue-1998-1999-3-8l-1.jpg?v=1794201147","url":"https:\/\/performancechiptuning.com\/es\/products\/upper-intake-manifold-with-gasket-for-oldsmobile-intrigue-1998-1999-3-8l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}