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

Unlock the full potential of your Chevrolet Avalanche 2500 with the Gibson Performance Header. Engineered to deliver more usable horsepower and torque at low and mid-range RPM highway speeds, this header improves your engine's ability to breathe and keeps it running cooler.

  • Dyno-tuned for optimal performance
  • Direct replacement for factory manifolds
  • Uses OEM style connections
  • 3/8" Heavy Duty Laser Cut Port Flanges for a leak-free seal
  • Premium Gaskets and Hardware included
  • Backed by a Lifetime Limited Warranty
Make Model Year Type
Chevrolet Avalanche 2500 2004 Base
Chevrolet Avalanche 2500 2005 LS
Chevrolet Avalanche 2500 2005 LT
Chevrolet Avalanche 2500 2006 LS
Chevrolet Avalanche 2500 2006 LT
Chevrolet Silverado 2500 HD 2004 Base
Chevrolet Silverado 2500 HD 2004 LS
Chevrolet Silverado 2500 HD 2004 LT
Chevrolet Silverado 2500 HD 2004 WT
Chevrolet Silverado 2500 HD 2005 Base
Chevrolet Silverado 2500 HD 2005 LS
Chevrolet Silverado 2500 HD 2005 LT
Chevrolet Silverado 2500 HD 2005 WT
Chevrolet Silverado 3500 2004 Base
Chevrolet Silverado 3500 2004 LS
Chevrolet Silverado 3500 2004 LT
Chevrolet Silverado 3500 2004 WT
Chevrolet Silverado 3500 2005 Base
Chevrolet Silverado 3500 2005 LS
Chevrolet Silverado 3500 2005 LT
Chevrolet Suburban 2500 2004 LS
Chevrolet Suburban 2500 2004 LT
Chevrolet Suburban 2500 2005 LS
Chevrolet Suburban 2500 2005 LT
GMC Sierra 2500 HD 2004 Base
GMC Sierra 2500 HD 2004 SLE
GMC Sierra 2500 HD 2004 SLT
GMC Sierra 2500 HD 2004 WT
GMC Sierra 2500 HD 2005 Base
GMC Sierra 2500 HD 2005 SLE
GMC Sierra 2500 HD 2005 SLT
GMC Sierra 2500 HD 2005 WT
GMC Sierra 3500 2004 Base
GMC Sierra 3500 2004 SLE
GMC Sierra 3500 2004 SLT
GMC Sierra 3500 2004 WT
GMC Sierra 3500 2005 Base
GMC Sierra 3500 2005 SLE
GMC Sierra 3500 2005 SLT
GMC Sierra 3500 2005 WT
GMC Yukon XL 2500 2004 SLE
GMC Yukon XL 2500 2004 SLT
GMC Yukon XL 2500 2005 SLE
GMC Yukon XL 2500 2005 SLT
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