The K&N 57-2546-1 FIPK air intake system replaces your vehicle's restrictive factory air filter and air intake housing. K&N intakes are designed to dramatically reduce intake restriction as they smooth and straighten air flow. This allows your engine to inhale a larger amount of air than the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. The 57-2546-1 air intake comes with a K&N high-flow air filter and a heat shield that installs into the previous air box space. Air is directed through an aerodynamically engineered intake tubes into the engine's throttle body for a guaranteed power gain. The tubes accommodates the factory mass air sensor and air temperature sensor. The oversized oval shaped air filter can be used for up to 100,000 miles before servicing is needed depending on driving conditions. This air intake is relatively easy to install usually in 90 minutes or less using the existing factory mounting points and requires commonly available tools. K&N 57 Series FIPK's are street legal in all 50 US states and come with K&N's Million Mile Limited Warranty.

Vehicle Fitment

Years	Make	Model	Trim
2003–2005	Ford	Excursion	Eddie Bauer
2003–2005	Ford	Excursion	Limited
2004–2005	Ford	Excursion	XLS
2003–2005	Ford	Excursion	XLT
2004–2007	Ford	F-250 Super Duty	Harley-Davidson Edition
2004–2007	Ford	F-250 Super Duty	King Ranch
2003–2007	Ford	F-250 Super Duty	Lariat
2003–2007	Ford	F-250 Super Duty	XL
2003–2007	Ford	F-250 Super Duty	XLT
2004–2007	Ford	F-350 Super Duty	Harley-Davidson Edition
2003–2007	Ford	F-350 Super Duty	King Ranch
2003–2007	Ford	F-350 Super Duty	Lariat
2003–2007	Ford	F-350 Super Duty	XL
2003–2007	Ford	F-350 Super Duty	XLT
2003–2007	Ford	F-450 Super Duty	Lariat
2003–2007	Ford	F-450 Super Duty	XL
2003–2007	Ford	F-450 Super Duty	XLT
2003–2007	Ford	F-550 Super Duty	Lariat
2003–2007	Ford	F-550 Super Duty	XL
2003–2007	Ford	F-550 Super Duty	XLT