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K&N 57-2556 4.9 out of 5 stars 22 Customer Reviews
57 Series FIPK > Performance Intake Kit

List Price: $507.51
Your Price: $279.99

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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 before servicing 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.

[More Information on K&N FIPK Air Intake Systems]
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Lasts up to 100,000 miles before service is required (depending on driving conditions)
  • Replaces entire factory air intake system
  • Free-flowing high density polyethylene tube
  • Easy to install, usually in 90 minutes or less
  • Washable and reusable lifetime air filter
  • K&N Million Mile Limited Warranty

Product Specifications

Estimated Horsepower Gain15.46 HP @ 3829 RPM
Air Filter ColorRed
Air Filter Height8 in (203 mm)
Air Filter Large End Diameter7.5 in (191 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
Clamp MaterialStainless Steel
Clamp StyleRegular
Clamps Included7
Couplers Included3
Intake Pipe Color / FinishBlack
Intake Pipe PortsAll intake tube ports needed for the specified applications are included
Mass Air Flow Sensor Adapter IncludedMass Air Flow Sensor Adapter Included When Required
Product Box Height12.5 in (318 mm)
Product Box Length22.25 in (565 mm)
Product Box Width14.25 in (362 mm)
Product Style57 Series FIPK
Replacement FilterRF-1020
Street Legal In All US StatesYes
TUV Approved (Europe)No
TypeGen II
Vacuum Tubing IncludedYes
Weight14 lb (6.4 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

Product Reviews

  Installed on 07 F150, sounds great, noticeable bite over stock system. Definitely recommended. Love the growl when getting on the throttle.
Ronnie Montgomery Hamilton, Ohio
  Easy to install. Works great! Looks good and provides access to other components without disassembly. Greatly improved throttle response and noticeable increase in horsepower.
Wayland Porter Florida
  This product was very easy to install and made a noticeable improvement in power and fuel economy and the deep growl from the engine is great.
Mike Connecticut
  My truck sounds a lot better and went from 12.6 mpg to roughly 15 mpg. Very pleased and worth it.
Bryce Honeycutt Tennessee
  WOW! I have really enjoyed having this product on my Expedition since I had it installed last month. I haven't stopped smiling with the growl and extra power from my 5.4 litre V8! GREAT PRODUCT and I would recommend for everyone.
Jered Portland, Oregon
  This product was exactly what I was looking for in terms of durability and also gained a few MPG. Plus you can actually hear the motor now. Normal driving sounds the same as before but when you get on the gas you sure can hear that big V8 growl that a lot of people like to hear. Overall very happy with the product that K&N is making here. Just remember to put the MAF in the right direction.
Brett Addington Elyria, Ohio
  I recently bought the 57-2556 air Intake for my 2007 F150 XLT 4X4 5.4 engine. This is THE BEST INVESTMENT I bought for my Ford pickup...QUICKER take off and for $279.00!!!! I WILL be buying ANOTHER INTAKE for our JEEP when we buy it in 2 years. HIGHLY RECOMMENDED INVESTMENT!!!!! Thank you, keep up the GOOD products K&N.
Rick Buzalewski Northfield, Ohio