K&N 57-2559

57 Series FIPK > Performance Intake Kit
List Price: $501.43
Your Price: USD $276.99

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The K&N 57-2559 FIPK air intake system replaces the restrictive factory air filter and air intake housing in some Ford Focus 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 57-2559 air intake comes with a K&N XStream Top air filter designed for higher air flow and durability. The air filter installs into the previous air box space and directs air through an 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 line. The oversized cone shaped air filter comes with a water repellent DryCharger filter wrap to protect the filter from moisture. The 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 requiring commonly available tools to do the job. 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)
  • 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

Product Specifications

Estimated Horsepower Gain11.85 HP @ 5797 RPM
Air Filter ColorRed
Air Filter Height5.563 in (141 mm)
Air Filter Large End Diameter6 in (152 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
CARB EO NumberD-269-31
Clamp MaterialStainless Steel
Clamp StyleRegular
Clamps Included3
Couplers Included1
Intake Pipe Color / FinishBlack
Intake Pipe MaterialHigh-Density Polyethylene
Product Box Height12.5 in (318 mm)
Product Box Length22.25 in (565 mm)
Product Box Width14.25 in (362 mm)
Product Style57 Series FIPK
Replacement FilterRX-4990
Street Legal In All US StatesYes
TUV Approved (Europe)No
TypeGen II
Weight7.1 lb (3.2 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

Customer Feedback

Be the first to review part 57-2559
After reading other reviews I decided this was the intake for my 2013 Ford Focus with the 2.0L Duratec engine. Great sound and noticable performance, plus better fuel economy. The numbers don't lie. The provided dyno info was almost exact when I had put mine on the dyno. Nearly 10hp gain through the meat of the power curve.

I installed this intake on a 2015 Ford Focus Sedan SFE 1.0L EcoBoost. What a difference The kit is just a filter and a new intake box lid, so you won't get the loud CAI sound....but the throttle response is AMAZING MUCH more fun to drive, much smoother acceleration. Less bogging when the rpms dip too low. Couldn't be happier

I really like the performance out of my 2015 Ford Focus with this Kit. I feel the kit is overpriced, However....Due to the fact, that all I would have required, in hindsight, would be to order the filter,the stock filter housing would work just fine with little or no modification.

Lynwood, WA