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 | 
| 2003-2005 | Ford | Excursion | Eddie Bauer | 
| 2000-2005 | Ford | Excursion | Limited | 
| 2004-2005 | Ford | Excursion | XLS | 
| 2000-2005 | Ford | Excursion | XLT | 
| 2004 | Ford | F-250 Super Duty | King Ranch | 
| 1999-2004 | Ford | F-250 Super Duty | Lariat | 
| 1999-2004 | Ford | F-250 Super Duty | XL | 
| 1999-2004 | Ford | F-250 Super Duty | XLT | 
| 2003-2004 | Ford | F-350 Super Duty | King Ranch | 
| 1999-2004 | Ford | F-350 Super Duty | Lariat | 
| 1999-2004 | Ford | F-350 Super Duty | XL | 
| 1999-2004 | Ford | F-350 Super Duty | XLT |