K&N 57-2556 Cold Air Intake Kit for Ford Expedition/F150 5.4L V8

  • KN-Performance-Cold-Air-Intake-Kit-57-2556-with-Lifetime-Filter-for-ford-ExpeditionF150-Lincoln-Mark-LT-54L-V8-0-0
  • KN-Performance-Cold-Air-Intake-Kit-57-2556-with-Lifetime-Filter-for-ford-ExpeditionF150-Lincoln-Mark-LT-54L-V8-0-0


Estimated horsepower gain of 15.46 HP at 3829 RPM. Designed to improve throttle response and engine sound. Lasts up to 100,000 miles before service is required (depending on driving conditions). read more


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$507.00 $310.99


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Questions & Answers


  • 2004-2008 Ford F150 5.4L
  • 2006-2008 Lincoln Mark LT 5.4L
  • 2005 Ford Expedition 5.4L

Fits: 2004, 2005, 2006, 2007, 2008

Some parts are not legal for use in California or other states with similar laws/regulations
  • Guaranteed to increase horsepower
  • Estimated gain of 15 HP
  • Free-flowing high density polyethylene tube
  • Washable and reusable lifetime air filter
  • Easy to install, usually in 90 minutes or less
  • Backed by K&N’s Million Mile Warranty
  • Proudly made in the USA
  • 50 State Legal CARB EO# D-269-37

Installation Instructions (PDF)

2005 Ford F150 5.4L Dyno Chart (PDF)




Item Weight

14 pounds

Product Dimensions

18 x 18 x 12 inches


The K&N 57 Series FIPK 57-2556 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 57-2556 air intake comes with a chrome topped 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 tube into the engine’s throttle body for a guaranteed power gain. The oversized air filter can be used for up to 100,000 miles beforeservicing is needed depending on driving conditions. This air intake is relatively easy to install usually in 90 minutes or less using 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.
– K&N’s easy to install air intake systems replace the restrictive factory air filter and air intake housing allowing for virtually unrestricted air flow.

– This power gaining air intake comes with K&N’s famous million mile limited warranty.

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  • Robert

    Received item as promised, shipping was as expected. Condition was as advertised. Item was well packaged. Would buy from these people again.
    Looks and sounds great.

  • Chuck Moore

    Best money ever i ever spent on my 2007 f150. Seems like it dosent work as hard to pull the 35″ tires I have on it after I had the CAI installed. The mileage may be slightly better because I don’t have to get on it as hard.

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