{"product_id":"shorty-exhaust-header-for-chevrolet-suburban-gmc-yukon-cadillac-escalade-2003-2006-6-0l","title":"Shorty Exhaust Header for Chevrolet Suburban GMC Yukon Cadillac Escalade (2003-2006) 6.0L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Flow Stainless Steel Shorty Exhaust Headers for 2003-2006 Chevrolet Suburban, GMC Yukon, Cadillac Escalade (GMT800)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Shorty Exhaust Header set replaces the restrictive factory cast-iron exhaust manifolds on 2003-2006 6.0L Suburban, Yukon, and Escalade models to reduce exhaust backpressure and optimize low-to-mid-range torque.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMT800 Exhaust Manifold Failure Point\u003c\/h3\u003e\n\u003cp\u003eFactory cast-iron exhaust manifolds on \u003cstrong\u003eGMT800\u003c\/strong\u003e platforms frequently suffer from thermal fatigue, resulting in warped mating surfaces and sheared rear cylinder head bolts. Beyond mechanical failure, the restrictive OEM log-manifold architecture forces exhaust pulses from adjoining cylinders to collide, creating intense backpressure and trapping excess combustion heat against the \u003cstrong\u003eVortec 6000\u003c\/strong\u003e cylinder heads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eFabricated from CNC mandrel-bent 16-gauge 304 stainless steel, these short-tube headers feature smooth 1-3\/4 in. primary runners that optimize pulse scavenging from idle through 4,500 RPM. Precision TIG welds resist thermal cracking under heavy towing duty cycles, while 3\/8 in. laser-cut head flanges are hydraulically flattened to guarantee a leak-free seal. Retaining the factory 2-1\/2 in. collector orientation, this system connects directly to the OEM Y-pipe without cutting or welding.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2 Shorty exhaust headers (driver and passenger side)\u003c\/li\u003e\n  \u003cli\u003e2 Header-to-cylinder-head gaskets\u003c\/li\u003e\n  \u003cli\u003e2 Collector (outlet) gaskets\u003c\/li\u003e\n  \u003cli\u003eMounting bolts and hardware set\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;\"\u003e2003-2006 Chevrolet Suburban, GMC Yukon, Cadillac Escalade\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\u003eVortec 6000 (LQ4 \/ LQ9)\u003c\/strong\u003e \/ \u003cstrong\u003eGMT800\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;\"\u003e300-345 hp \/ 360-380 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;\"\u003e\u003cstrong\u003eFE015311-32\u003c\/strong\u003e\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\u003e2003-2006 Chevrolet Suburban 1500 6.0L\u003c\/li\u003e\n  \u003cli\u003e2003-2006 GMC Yukon 6.0L\u003c\/li\u003e\n  \u003cli\u003e2003-2006 GMC Yukon XL 1500 \/ XL 2500 6.0L\u003c\/li\u003e\n  \u003cli\u003e2003-2006 Cadillac Escalade 6.0L\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 Suburban, Yukon, Escalade?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct bolt-on fit for 2003-2006 \u003cstrong\u003eGMT800\u003c\/strong\u003e SUVs equipped with the \u003cstrong\u003eLQ4\u003c\/strong\u003e or \u003cstrong\u003eLQ9\u003c\/strong\u003e 6.0L V8 engine. It does not fit 4.8L, 5.3L, or 8.1L platforms.\u003c\/p\u003e\n\n\u003ch4\u003eAre modifications or ECU recalibration required?\u003c\/h4\u003e\n\u003cp\u003eNo, these shorty headers bolt directly to factory catalytic converter downpipes and retain OEM oxygen sensor locations without triggering a check engine light or requiring a custom tune.\u003c\/p\u003e\n\n\u003ch3\u003eThe Chevrolet, GMC, Cadillac Truck Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle severe duty cycles, these 304 stainless steel headers withstand high exhaust gas temperatures during sustained grade towing without warping or blowing gaskets.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67901493510392,"sku":"DS-EU6AL435Q","price":256.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/shorty-exhaust-header-for-chevrolet-suburban-gmc-yukon-cadillac-escalade-2003-2006-6-0l-1.jpg?v=1793337536","url":"https:\/\/performancechiptuning.com\/de\/products\/shorty-exhaust-header-for-chevrolet-suburban-gmc-yukon-cadillac-escalade-2003-2006-6-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}