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K&N 57-2556 Air Intake

57 Series FIPK > Performance Intake Kit
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.8 out of 5 stars   39 Customer Reviews
  • 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
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]

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
CARB EO NumberD-269-37
Clamp MaterialStainless Steel
Clamp StyleRegular
Clamps Included7
Couplers Included3
Intake Pipe Color / FinishBlack
Intake Pipe MaterialHigh-Density Polyethylene
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
Weight14 lb (6.4 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

K&N 57-2556 Air Intake Product Reviews

Thursday, September 8, 2016 - Part 57-2556
Easy to install, was missing two bolts but picked them up at local hardware and I am very pleased. I can see a big differance in performance and gas mileage.

Steve Fizer
Pahoa, Hawaii
Thursday, September 8, 2016 - Part 57-2556
Was just as described, easy to install. Still checking the gas mileage to see how much it helped but can see more performance already. I think I'll be very happy with it. Steve

Steve Fizer
Pahoa, Hawaii
Thursday, August 25, 2016 - Part 57-2556
Everything was there and fitted up nicely. Took abot 2 hours to install.

Steven Brisson
Bladenboro, North Carolina
Tuesday, July 5, 2016 - Part 57-2556
I noticed an instant difference when this was installed. The growl from under the hood would have been enough, but I could feel a difference in throttle response too. My 5.4L jumped harder from the stop light. The installation wasn't as easy as advertised. I'm more of an electrical tradesman, but this could have been easier. The directions were close, but making it a catch-all for every model led me to take a few parts off and rearrange. I can't see owning another vehicle without having a K&N product on it again.

Adam Glenn
Lafayette, Indiana
Thursday, June 30, 2016 - Part 57-2556
Vroom Vroom

Jerry Parker
New Orleans, Luisianna
Thursday, April 7, 2016 - Part 57-2556
Fast and easy to install. Noticeable power increase on acceleration, sounds great. Installed on 2007 F-150 5.4l V8.

San Diego, California
Tuesday, March 29, 2016 - Part 57-2556
Top Notch Product! I installed it easily one afternoon on my F-150 and the increased responsiveness is clear. I'm highly satisfied with the product and would suggest others to purchase it. Thanks K&N

Harry B.
Ticonderoga, New York