{"product_id":"cast-t4-turbo-exhaust-manifold-for-gmc-sierra-1500-1999-2013-4-8l-5-3l-6-0l-6-2l","title":"Cast T4 Turbo Exhaust Manifold for GMC Sierra 1500 (1999-2013) 4.8L 5.3L 6.0L 6.2L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Durability Cast T4 Turbo Exhaust Manifold for 1999-2013 GMC Sierra (GMT800 \/ GMT900)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Cast T4 Turbo Exhaust Manifold replaces the factory passenger-side exhaust manifold on 1999-2013 GMC Sierra trucks to mount a T4 turbocharger high in the engine bay for single-turbo forced induction applications.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC Sierra Exhaust Limitation\u003c\/h3\u003e\n\u003cp\u003eFactory cast exhaust manifolds on \u003cstrong\u003eGMT800\u003c\/strong\u003e and \u003cstrong\u003eGMT900\u003c\/strong\u003e trucks are engineered purely for standard atmospheric evacuation, choking high-volume exhaust velocity and lacking any provision for turbocharger integration. While fabricated tubular manifolds provide turbo mounting, they routinely fail on heavy-duty truck platforms: continuous heat cycling, exhaust backpressure, and the physical weight of an unsupported turbocharger cause thin-wall welded stainless tubes to crack at the collector seams. Furthermore, warped fabricated flanges cause exhaust gas leaks that compromise spool time and destroy driveability.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eCast from heavy-duty ductile iron, this passenger-side turbo manifold provides superior thermal retention and mechanical strength, resisting thermal fatigue and structural cracking under prolonged boost. It merges all four passenger-side exhaust runners into an integrated, precision-machined \u003cstrong\u003eT4\u003c\/strong\u003e footprint that positions the turbo high and forward for optimal clearance. Exhaust from the driver bank integrates seamlessly via an integrated 2.5-inch V-band crossover flange, delivering an airtight, gasket-free seal that speeds up turbine response on \u003cstrong\u003eGen III\u003c\/strong\u003e and \u003cstrong\u003eGen IV\u003c\/strong\u003e LS-based truck engines.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 Cast T4 Turbo Exhaust Manifold (Passenger Side)\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;\"\u003e1999-2013 GMC Sierra 1500\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 V8 (4.8L, 5.3L, 6.0L, 6.2L) \/ GMT800, GMT900\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;\"\u003e255-403 hp \/ 285-417 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\u003e1999-2013 GMC Sierra 1500 (4.8L, 5.3L, 6.0L, 6.2L Vortec V8)\u003c\/li\u003e\n  \u003cli\u003eVortec LS engine swap applications utilizing factory truck cylinder heads\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 and GMT900 Sierra?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 1999-2013 GMC Sierra equipped with \u003cstrong\u003eGen III\u003c\/strong\u003e and \u003cstrong\u003eGen IV\u003c\/strong\u003e Vortec engines; \u003cstrong\u003eit does not fit 2014+ Gen V EcoTec3 5.3L or 6.2L engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eAre exhaust manifold hardware and gaskets included with this manifold?\u003c\/h4\u003e\n\u003cp\u003eNo, mounting bolts and manifold gaskets are not included and must be sourced separately or reused from existing stock hardware.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Workhorse Caliber\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle the immense thermal strain of high-load towing and high-boost strip applications, this thick cast-iron manifold guarantees zero crack propagation and leak-free reliability across every duty cycle.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67612783149304,"sku":"DS-E76LZI2QB","price":194.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/cast-t4-turbo-exhaust-manifold-for-gmc-sierra-1500-1999-2013-4-8l-5-3l-6-0l-6-2l-1.jpg?v=1791607355","url":"https:\/\/performancechiptuning.com\/fr\/products\/cast-t4-turbo-exhaust-manifold-for-gmc-sierra-1500-1999-2013-4-8l-5-3l-6-0l-6-2l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}