Gibson 05-06 Chevrolet Avalanche 2500 LS 8.1L 1-3/4in 16 Gauge Performance Header - Stainless

Every Gibson Performance Header is Dyno-tuned and engineered to deliver more usable horsepower and torque at low and mid-range RPM highway speeds. Improves engines ability to breathe and cooler operating engine temperature. Designed as a direct replacement for the factory manifolds, using the stock crossover pipe. They are well suited for lowered and raised vehicles, street and off-road. 50 State Street legal. Meets EPA and CARB requirements. Will not affect the factory warranty. No welding required. Uses OEM style connections. 3/8 in. Heavy Duty Laser Cut Port Flanges- No Warping or Leaking. Premium Gaskets and Hardware included. Backed by a Lifetime Limited Warranty.Installation InstructionsCertificate of OriginWarrantyThis Part Fits: Year Make Model Submodel 2004 Chevrolet Avalanche 2500 Base 2005-2006 Chevrolet Avalanche 2500 LS 2005-2006 Chevrolet Avalanche 2500 LT 2004-2005 Chevrolet Silverado 2500 HD Base 2004-2005 Chevrolet Silverado 2500 HD LS 2004-2005 Chevrolet Silverado 2500 HD LT 2004-2005 Chevrolet Silverado 2500 HD WT 2004-2005 Chevrolet Silverado 3500 Base 2004-2005 Chevrolet Silverado 3500 LS 2004-2005 Chevrolet Silverado 3500 LT 2004 Chevrolet Silverado 3500 WT 2004-2005 Chevrolet Suburban 2500 LS 2004-2005 Chevrolet Suburban 2500 LT 2004-2005 GMC Sierra 2500 HD Base 2004-2005 GMC Sierra 2500 HD SLE 2004-2005 GMC Sierra 2500 HD SLT 2004-2005 GMC Sierra 2500 HD WT 2004-2005 GMC Sierra 3500 Base 2004-2005 GMC Sierra 3500 SLE 2004-2005 GMC Sierra 3500 SLT 2004-2005 GMC Sierra 3500 WT 2004-2005 GMC Yukon XL 2500 SLE 2004-2005 GMC Yukon XL 2500 SLT