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K&N 57-2557 Air Intake

57 Series FIPK > Performance Air Intake System
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   5.0 out of 5 stars   3 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 57-2557 Air Intake fits some Ford F150 models. See vehicle applications link for details.
The K&N 57-2557 FIPK air intake system replaces the restrictive factory air filter and air intake housing in some Ford F150 models. K&N intakes are designed to dramatically reduce intake restriction as they smooth and straighten air flow. This allows your F150’s 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 57-2557 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 past the mass air sensor and through an aerodynamically engineered intake tube into the engine’s throttle body for a guaranteed power gain. The tube accommodates the factory crankcase vent hose. The oversized cone 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. The tools needed are a screwdriver, socket set and several wrenches. 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 Gain7.84 HP @ 4828 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-269-31
Clamp MaterialStainless Steel
Clamp StyleRegular
Clamps Included5
Couplers Included2
Intake Pipe Color / FinishBlack
Intake Pipe MaterialHigh-Density Polyethylene
Product Box Height12.5 in (318 mm)
Product Box Length18.25 in (464 mm)
Product Box Width18.25 in (464 mm)
Product Style57 Series FIPK
Replacement FilterRF-1020
Street Legal In All US StatesYes
TUV Approved (Europe)No
TypeGen II
Weight12.3 lb (5.6 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

K&N 57-2557 Air Intake Product Reviews

Monday, October 24, 2016 - Part 57-2557
Truck drives so smooth.

Thomas Cruz
San Antonio, Texas
Sunday, June 12, 2016 - Part 57-2557
After reviewing the pro's & con's on a Full System Cold Air Intake, decided on this K&N Cold Air System for my 2005 Ford F-150 STX 4x4 4.6L FI V-8 engine. Never did install a Cold Air Intake before. The directions where easy to read with pictures showing what to take off engine stock air system & install the new K&N Cold Air System. Install took me about 1hr & 15 minutes. Directions state 90 minutes with basic hand tools, but I took my TIME reviewing the directions a few times over just to make sure I did everything according to the directions. Once done & everything double checked I told my wife to Fire-Up the truck & WOW!! I Heard the DIFFERENCE in ENGINE & MUFFLER sound RIGHT AWAY. Told my wife to REV the engine a few TIMES & all's I can say is WOW!! More throaty sound in muffler and throttle responded more quickly, PARKED! On-Road test, truck leaves from a stop better, reaches speeds more quickly. Highway driving, truck has great speed on entrance ramps. I was amazed on how much more the throttle responds. I am VERY GLAD I bought this K&N Cold Air Intake System for my truck. WORTH EVERY PENNY!! I plan in the future to upgrade fuel filter to K&N & K&N Oil Filter as well

Brian Ferencin
Bethlehem, Pennsylvania
Wednesday, June 3, 2015 - Part 57-2557
At first when I installed this part it was working really well, but the day after I installed it the check engine light came on and I found out it was the idle air control valve so then I took the intake tube off the throttle body and cleaned out the throttle body and the sensor turned off. But other than that the product works really well. I am definitely going to purchase products from K&N again.

John Medina
Laredo, Texas