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K&N 57-2503 4.6 out of 5 stars 5 Customer Reviews
57 Series FIPK > Performance Intake Kit

List Price: $443.90
Your Price: $244.99

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57-2503
 
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The K&N 57-2503 FIPK 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 57-2503 air intake comes with a vent hose and chrome topped K&N high-flow air filter that mounts in the previous air box space. Air is directed through dual intake tubes that lead into the engine’s throttle body for a guaranteed power gain. The oversized, oval tapered cone-shaped air filter can be used for up to 100,000 miles before servicing is needed depending on driving conditions. This air intake usually installs in about 90 minutes and requires 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
  • 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 Gain5.32 HP @ 3654 RPM
Air Filter ColorRed
Air Filter Height9 in (229 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeNot Flanged
Clamp MaterialStainless Steel
Clamp StyleMini
Clamps Included5
Intake Pipe Color / FinishNone
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 Height9.25 in (235 mm)
Product Box Length15.13 in (384 mm)
Product Box Width9.13 in (232 mm)
Product Style57 Series FIPK
Replacement FilterRF-1012
Street Legal In All US StatesYes
TUV Approved (Europe)No
TypeGen I
Vacuum Tubing IncludedYes
Weight6 lb (2.7 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.


Product Reviews


  I was impressed with the difference replacing the stock air filter with the K&N made with my F250 7.5. Now that I have replaced the stock housing with this intake kit I am very excited. The placement of the new housing was super easy. Don't let drilling 3 holes scare you as it is easy. If I can do it anyone can. Just follow the excellent documentation. Can't wait to get the new exhaust to complete the breathing on the system.
Mark Austin Pine, Arizona
  No issue with installation. I feel that I did get a little more HP out of my engine with this modification. Next, will be installing an RV cam to get more HP out of this engine.
Bill M. San Jose, California
  Easy to install. Instant improvement in response to acceleration. Improvement in gas mileage.
Paul W. Cackowski Johnstown, Colorado
  Great product! Not only can I feel the difference, I can hear the difference as well! Easy and quick to install. I run K&N on all my trucks!
Bill Alexander Kapaa, Hawaii
  The best investment I have made to two of my trucks. Added three miles to the gallon on my 351w bronco and almost two to my 460 f-250. Easy to install and adds some extra power by removing air restriction. Once again very good product.
James Colorado