{"product_id":"performance-exhaust-headers-porsche-911-991-2-gt3-gt3-rs-4-0l","title":"Performance Heat-Wrapped Exhaust Headers - Porsche 911 991.2 GT3 \/ GT3 RS 4.0L 2017-2019","description":"\u003cp\u003eUpgrade the exhaust flow, response, and motorsport character of your \u003cstrong\u003ePorsche 911 991.2 GT3 or GT3 RS 4.0L\u003c\/strong\u003e with these \u003cstrong\u003ePerformance Heat-Wrapped Exhaust Headers\u003c\/strong\u003e. Designed for the naturally aspirated 4.0-liter flat-six engine, this left and right header set replaces the factory exhaust manifolds with a freer-flowing tubular design intended for performance-focused street and track applications.\u003c\/p\u003e\n\u003cp\u003eThe headers feature individually routed primary tubes leading into performance collectors for smoother exhaust-gas evacuation. A high-temperature thermal wrap surrounds the tubing to help contain radiant exhaust heat around the engine bay. The system is designed around the factory cylinder-head mounting locations and uses performance-style outlet connections for integration with a compatible exhaust system.\u003c\/p\u003e\n\u003ch3\u003eKey Specs\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003ePerformance Exhaust Headers \/ Exhaust Manifolds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConstruction\u003c\/th\u003e\n\u003ctd\u003eTubular Performance Header Design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeat Protection\u003c\/th\u003e\n\u003ctd\u003eHigh-Temperature Thermal Exhaust Wrap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003ctd\u003e4.0L Naturally Aspirated Flat-Six\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003ctd\u003eLeft \u0026amp; Right Header Set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutlet Style\u003c\/th\u003e\n\u003ctd\u003ePerformance Exhaust Connection \/ V-Band Style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFitment\u003c\/th\u003e\n\u003ctd\u003ePorsche 911 991.2 GT3 \/ GT3 RS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModel Years\u003c\/th\u003e\n\u003ctd\u003eGT3: 2017-2019 \/ GT3 RS: 2018-2019\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003ctd\u003e1 Pair - Left \u0026amp; Right\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCondition\u003c\/th\u003e\n\u003ctd\u003eBrand New\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance Tubular Header Design:\u003c\/strong\u003e Individually routed primary tubes are designed to improve exhaust-gas flow compared with more restrictive factory manifold configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesigned for the 4.0L Naturally Aspirated Engine:\u003c\/strong\u003e Developed for the high-revving 4.0-liter flat-six used in the Porsche 911 991.2 GT3 and GT3 RS.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless Steel Construction:\u003c\/strong\u003e Built from heat-resistant stainless steel for strength, durability, and long-term performance in demanding exhaust environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Heat Wrapping:\u003c\/strong\u003e High-temperature exhaust wrap helps retain heat inside the header tubing and reduce radiant heat transfer within the surrounding engine compartment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Exhaust Flow:\u003c\/strong\u003e Performance collectors and smoother tubular routing are designed to reduce exhaust restriction and support more efficient gas evacuation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSharper Engine Response:\u003c\/strong\u003e Reduced exhaust restriction can support improved throttle response when combined with the appropriate exhaust system and engine calibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAggressive Naturally Aspirated Sound:\u003c\/strong\u003e The freer-flowing header configuration can increase exhaust volume and sharpen the high-RPM character of the GT3's naturally aspirated flat-six.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance Collector Design:\u003c\/strong\u003e The individual primary tubes merge through carefully shaped collectors to promote smoother exhaust flow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotorsport-Inspired Construction:\u003c\/strong\u003e Designed for performance-oriented Porsche builds where exhaust flow, thermal management, and lightweight component design are priorities.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePair Configuration:\u003c\/strong\u003e Supplied as a complete left and right header set for both cylinder banks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIncludes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 × Left Performance Exhaust Header\u003c\/li\u003e\n\u003cli\u003e1 × Right Performance Exhaust Header\u003c\/li\u003e\n\u003cli\u003ePre-Applied High-Temperature Exhaust Wrap\u003c\/li\u003e\n\u003cli\u003eIntegrated Exhaust Connection Flanges\u003c\/li\u003e\n\u003cli\u003eMounting Hardware, if supplied\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePorsche 911 991.2 GT3 4.0L - 2017-2019\u003c\/li\u003e\n\u003cli\u003ePorsche 911 991.2 GT3 RS 4.0L - 2018-2019\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFitment Note:\u003c\/strong\u003e Designed specifically for Porsche 911 991.2 GT3 and GT3 RS models equipped with the naturally aspirated 4.0L flat-six engine. This product is an exhaust header\/manifold set; catalytic converters are not shown as part of the supplied components. Verify compatibility with the vehicle's existing catalytic converters, center exhaust system, oxygen sensors, and any aftermarket exhaust components before installation.\u003c\/p\u003e\n\u003ch3\u003ePerformance \u0026amp; Tuning Note\u003c\/h3\u003e\n\u003cp\u003eActual horsepower, torque, sound level, and throttle-response changes depend on the complete exhaust configuration and engine calibration. Exhaust modifications may trigger diagnostic fault codes if the factory catalyst or oxygen-sensor configuration is changed. ECU calibration may be required depending on the final setup.\u003c\/p\u003e\n\u003cp\u003eThese headers are designed for a \u003cstrong\u003enaturally aspirated engine\u003c\/strong\u003e; they do not affect turbocharger spool because Porsche 911 991.2 GT3 and GT3 RS 4.0L models are naturally aspirated.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eProfessional installation is strongly recommended. Installation requires removal of the factory exhaust manifolds and correct alignment of the replacement headers with the cylinder heads and downstream exhaust components. New exhaust gaskets and appropriate high-temperature hardware should be used where required.\u003c\/p\u003e\n\u003cp\u003eAfter installation, inspect all fasteners, flange connections, oxygen-sensor locations, and exhaust clearances. Recheck mounting hardware after the first several complete heat cycles to ensure the system remains correctly secured.\u003c\/p\u003e\n\u003ch3\u003eEmissions \u0026amp; Road-Use Notice\u003c\/h3\u003e\n\u003cp\u003eExhaust-system modifications may affect emissions compliance, noise regulations, warranty coverage, and road legality depending on your location. The purchaser and installer are responsible for confirming compliance with applicable local regulations before installation or road use.\u003c\/p\u003e\n\u003ch3\u003eProduction \u0026amp; Shipping\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead Time:\u003c\/strong\u003e 2 weeks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDelivery:\u003c\/strong\u003e 1 week\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturns:\u003c\/strong\u003e Allowed within 10 days after delivery\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacements:\u003c\/strong\u003e Only for items damaged on arrival\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCare Guide\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAllow Proper Heat Cycling:\u003c\/strong\u003e After installation, allow the exhaust system to complete several normal heating and cooling cycles. Inspect mounting hardware and connections once the system has cooled completely.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKeep the Heat Wrap Clean:\u003c\/strong\u003e Avoid contaminating the thermal wrap with engine oil, fuel, coolant, aggressive solvents, or other flammable chemicals. Clean accidental contamination according to appropriate exhaust-component procedures before operating the vehicle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInspect Regularly:\u003c\/strong\u003e Periodically inspect the headers, welds, flanges, fasteners, thermal wrap, and surrounding components for signs of exhaust leakage, loosening, excessive heat exposure, or physical damage.\u003c\/p\u003e","brand":"The Carbon Lab","offers":[{"title":"High Flow Catted","offer_id":48011395072161,"sku":null,"price":1999.99,"currency_code":"USD","in_stock":true},{"title":"Catless","offer_id":48011395104929,"sku":null,"price":1999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0607\/6973\/0721\/files\/H9bfe1d928a0c4f61b416c0b01813baa4o.jpg?v=1791202975","url":"https:\/\/thecarbonlab.net\/products\/performance-exhaust-headers-porsche-911-991-2-gt3-gt3-rs-4-0l","provider":"The Carbon Lab","version":"1.0","type":"link"}