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57-2591
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K&N 57-2591 Air Intake

57 Series FIPK > Performance Intake Kit
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.6 out of 5 stars   5 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 57-2591 Air Intake fits some Ford F150 models. See vehicle applications link for details.
The K&N 57-2591 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 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 57-2591 air intake comes with a chrome topped K&N high-flow air filter and a heat shield that installs into the lower air box. 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 EVAP vent line 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 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 Gain12.74 HP @ 4555 RPM
Air Filter ColorRed
Air Filter Height6 in (152 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
CARB EO NumberD-269-46
Clamp MaterialStainless Steel
Clamp StyleRegular
Clamps Included5
Couplers Included1
Intake Pipe Color / FinishBlack
Intake Pipe MaterialHigh-Density Polyethylene
Product Box Height10.5 in (267 mm)
Product Box Length35.5 in (902 mm)
Product Box Width13.25 in (337 mm)
Product Style57 Series FIPK
Replacement FilterRC-5173
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.

K&N 57-2591 Air Intake Product Reviews

Saturday, July 2, 2016 - Part 57-2591
I purchased this intake on the recommendation of a friend. I purchased a new vehicle, and this intake was installed with the intention of improving mileage and performance. I figured that the best way to maximize the benefit of mileage would be to install as soon a possible. The installation was extremely easy - a driver for some hose clamps and a couple of nuts & bolts, and a razor for cutting the gasket strips. It was a virtually painless job, and it took under 30 minutes. I have seen a gain of just over 1MPG on my normal daily driving, and almost 2MPG on the highway. The unit will pay for itself by the end of this summer (The added deep throaty intake sound when accelerating is a nice side benefit.) Thank you for a great product

Matthew Michalik
Franklin, New York
Thursday, June 23, 2016 - Part 57-2591
I installed the K&N Performance Intake Kit on my new 2015 Ford F150 V8, 5.0L to increase throttle response. I got more than expected, not only did it meet expectations, but it growl's like a Grizzly when you step on the gas.

David Phillips
Houston, Texas
Friday, June 10, 2016 - Part 57-2591
This kit is great, very easy to install. It came on time. I even like the added sound it produces from the increase in air volume. I would highly recommend this product.

Scott McCashland
Richmond, Texas
Monday, June 6, 2016 - Part 57-2591
Product is ok. It sounds really good. It is a little overpriced and didn't see any difference MPG. Really easy to install. Quality is ok.

Luc Levesque
Washburn, Maine
Friday, May 13, 2016 - Part 57-2591
Easy install. Did the install in about 30 min. myself. I feel it has really opened up the sound of my exaust system. Can't wait to see what it does with the fuel mileage.

Travis
Orange, California