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57 Series FIPK > Performance Intake Kit

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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 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
Available Information
Installation Instruction Sheet
57-2557 Vehicle Applications
Dyno Chart - 2004 Ford F150 4.6L - 7.84HP Increase
News Story - K&N 57-Series FIPK® Air Intake Adds Estimated 15 Horsepower to 2004-2008 Ford F-150 5.4L


Part 57-2557 Product Specifications
Product Style: 57 Series FIPK
Estimated Horsepower Gain: 7.84 HP @ 4828 RPM
Replacement Filter: RF-1020
Air Filter Color: Red
Air Filter Outlet Shape: Round
Street Legal In All US States: Yes
Air Filter Height: 8 in (203 mm)
TUV Approved (Europe): No
Air Filter Material: Cotton Gauze
Clamps Included: 5
Clamp Material: Stainless Steel
Clamp Style: Regular
Couplers Included: 2
Type: Gen II
Mass Air Flow Sensor Adapter Included: Mass Air Flow Sensor Adapter Included When Required
Intake Pipe Color / Finish: Black
Intake Pipe Ports: All intake tube ports needed for the specified applications are included
Vacuum Tubing Included: Yes
Air Filter Large End Diameter: 7.5 in (191 mm)
Weight: 12.3 lb (5.6 kg)
Product Box Length: 18.25 in (464 mm)
Product Box Width: 18.25 in (464 mm)
Product Box Height: 12.5 in (318 mm)


Horsepower gains based on similar vehicle dynamometer test. Results will vary.


Customer Feedback      Be the first to review part 57-2557

I went from a Fram Tough Guard air filter to this thinking it would improve my overall horsepower and MPG and boy has it ever! Within the first month my hp has increased by at least 5hp and I'm getting almost 18 mpg! Which is fairly decent for a 5.0 v8 engine. I would recommend this filter to those wanting to get the most out of their ford 1995 F150 pickup!
John, Little Rock, Arkansas
Best Filter On the Market! Put it on my '78 Ford F150 and it helped with performance and fuel economy just as advertised.
Zach, Colorado
I gave this air filter good rating, even though I haven't installed it yet. I know these filter are the best because I use one in my 1989 Ford F150 pickup. The filter has been in the truck 10 years plus and is still like new. I also used one in my old car a 1993 Lincoln Towncar. I bought both filters at the same time. These are the best filters you can buy. If you service the filter like you need to they just keep on going.
Barry Williams, North Carolina