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" Heavy Duty Laser Cut Port Flanges- No Warping or Leaking. Premium Gaskets and Hardware included. Backed by a Lifetime Limited Warranty.
This 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 |
