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57-2539
$284.99 USD
MSRP $515.99 44.8% Off
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K&N 57-2539 Air Intake

57 Series FIPK > Performance Intake Kit
  • 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)
  • Easy to install, usually in 90 minutes or less
  • Free-flowing high density polyethylene tube
  • Replaces entire factory air intake system
  • Washable and reusable lifetime air filter
  • K&N Million Mile Limited Warranty
The K&N 57-2539 FIPK air intake system replaces the restrictive factory air filter and air intake. 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 57-2539 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 tube accommodates the factory mass air sensor, idle bypass hose and crank case 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 existing factory mounting points. The tools needed are a screwdriver, a ratchet 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 Gain8.64 HP @ 4486 RPM
Air Filter ColorRed
Air Filter Height6 in (152 mm)
Air Filter Large End Diameter7.5 in (191 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
CARB EO NumberD-269-26
Clamp MaterialStainless Steel
Clamp StyleRegular
Clamps Included7
Couplers Included2
Intake Pipe Color / FinishBlack
Intake Pipe MaterialHigh-Density Polyethylene
Product Box Height12.25 in (311 mm)
Product Box Length20.25 in (514 mm)
Product Box Width12.25 in (311 mm)
Product Style57 Series FIPK
Replacement FilterRF-1048
Street Legal In All US StatesYes
TUV Approved (Europe)No
TypeGen II
Weight11.2 lb (5.1 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

Customer Feedback

Installed the cold air intake in my 2014 Ford Explorer Sport. Even with the turbo, the response is improved and the sound is awesome!

PK
Knoxville, Tennessee
My wife was complaining about a musty smell for the last three years every time she turned on the air conditioner. I checked my owners manual for the 2011 Ford Explorer and no cabin filter was listed for that year. My Explorer was one of the first ordered and shipped to St. Louis. After talking to some of my friends at Ford, I came to find out that since my car was one of the first produced, they discovered that they failed to list the cabin filter in the manual, that being fixed on all later models. Once I discovered the error, I went to K&N to look up the replacement. She's hasn't had much chance to use the air conditioner yet but the fact she's no longer complaining convinces me that your product is working. I've been using K&N air filters for the past 15 to 20 years, love the product, and I'm sure the cabin filter will perform as well. David

David Ahner
St. Louis, Missouri
Very Happy customer, I need to purchase another one for my 2014 Ford Explorer. Thanks, Mike

Mike Blake
Broomfield, Colorado