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.

Vehicle Fitment

Years	Make	Model	Trim
1997–2003	Ford	Expedition	Eddie Bauer
1997–2003	Ford	Expedition	XLT
1997–2000	Ford	F-150	Base
2000–2003	Ford	F-150	Harley-Davidson Edition
2004	Ford	F-150	Heritage
2001–2003	Ford	F-150	King Ranch
1997–2003	Ford	F-150	Lariat
1999–2003	Ford	F-150	Lightning
1997–2003	Ford	F-150	XL
1997–2003	Ford	F-150	XLT
2004	Ford	F-150 Heritage	XL
2004	Ford	F-150 Heritage	XLT
1997–1999	Ford	F-250	Base
1997–1999	Ford	F-250	Lariat
1997–1999	Ford	F-250	XL
1997–1999	Ford	F-250	XLT