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57-2537
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K&N 57-2537 Air Intake

57 Series FIPK > Performance Air Intake System
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.9 out of 5 stars   9 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)
  • 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 57-2537 Air Intake fits some Ford Explorer, and Mercury Mountaineer models. See vehicle applications link for details.
The K&N 57-2537 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 57-2537 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 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, side cutters 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 Gain7.34 HP @ 4890 RPM
Replacement FilterRF-1048
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
Clamps Included6
Clamp MaterialStainless Steel
Clamp StyleRegular
CARB EO NumberD-269-26
Couplers Included2
TypeGen II
Product Style57 Series FIPK
Air Filter Height6 in (152 mm)
Intake Pipe Color / FinishBlack
Intake Pipe MaterialHigh-Density Polyethylene
Street Legal In All US StatesYes
TUV Approved (Europe)No
Weight9.1 lb (4.1 kg)
Air Filter Large End Diameter7.5 in (191 mm)
Product Box Height12.25 in (311 mm)
Product Box Length20.25 in (514 mm)
Product Box Width12.25 in (311 mm)
Mounting Hardware IncludedYes
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

K&N 57-2537 Air Intake Product Reviews

Saturday, July 8, 2017 - Part 57-2537
My son loves it, it was a gift. He's happy he's getting better performance and gas mileage. Thank you so much again. My husband even got one after seeing our son so pleased. Thanks again!

Diana Atencio
Denver, Colorado
Wednesday, February 22, 2017 - Part 57-2537
Installation was rather easy. Instructions we're a bit vague. Camshaft vacuum hose was tight to fit into polyurethane body. I found it easier to put gasket on hose first then insert into housing. Hose clamp to hold housing to bracket was too small, bought a 4.5 inch hose clamp, worked fine. All in all so increase in low range Power by about 5 to 7. Had seen 0 to 60 not much increase, does work well when they paired it up with brand new ignition wires and sparks from NGK. Good product easy to install if basic knowledge of car maintenance is known. Hardware was quality mostly stainless steel and fit exactly into OEM bolts and housing holes. Could make instructions a PDF or possibly do a video, instructions are vague.

Christopher Eckert
Davie, Florida
Tuesday, January 31, 2017 - Part 57-2537
Great product Came quickly as expected, great K&N service, the intake fit perfect in my 2002 Ford Explorer 4.0L V6. Little on the pricey side but that's what you pay for good quality. Definitely woke up the engine and throttle response is a lot better. During heavy acceleration I can feel the extra horse power, and also during initial acceleration. I recommend this product to anyone looking for better performance and a better look under the hood. I tried a different intake made by another company last year that was only $60, but it was not early as close to the performance and quality of this intake. No notice in better gas mileage yet because I drive the truck hard, but other people have said you get at least 1 more mpg. Thanks K&N.

Jaxon Villescas
Littleton, Colorado