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57-2561
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K&N 57-2561 Air Intake

57 Series FIPK > Performance Air Intake System
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.5 out of 5 stars   10 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 57-2561 Air Intake fits some Ford Ranger, and Mazda B4000 models. See vehicle applications link for details.
The K&N 57-2561 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 57-2561 air intake comes with a black rubber 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 a replacement silicone crank case vent hose. The oversized 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 the existing factory mounting points. The tools needed are a screwdriver, socket set and a 10 millimeter wrench. 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 Gain13.46 HP @ 5129 RPM
Replacement FilterRU-4990
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
Clamps Included3
Clamp MaterialStainless Steel
Clamp StyleRegular
CARB EO NumberD-269-48
Couplers Included1
TypeGen II
Product Style57 Series FIPK
Air Filter Height5.563 in (141 mm)
Intake Pipe Color / FinishBlack
Intake Pipe MaterialHigh-Density Polyethylene
Street Legal In All US StatesYes
TUV Approved (Europe)No
Weight8.3 lb (3.8 kg)
Air Filter Large End Diameter6 in (152 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 57-2561 Air Intake Product Reviews

Monday, April 16, 2018 - Part 57-2561
I got it on and running. I don't know how to do that picture stuff.

David Cardwell
Louisville, United States
Tuesday, April 4, 2017 - Part 57-2561
This system performs as advertised. Installation was not as smooth as I thought it would be but finally got it installed (brackets didn't quite line up as displayed on install sheet). I noticed an immediate performance increase and am waiting to see about gas mileage. It would have been helpful if they made mention of the Howl when you start up (air going past choke plate) that goes away after the choke kicks out. Thanks to the Ranger groups for sorting that out. Other than that, I love it and I highly recommend it.

Pat Shade
Victoria, Canada
Monday, February 6, 2017 - Part 57-2561
Its only been a couple of weeks and I can say my truck is much peepier, however the promise of improved gas mileage is so far not true. I would even go so far as to say it's a bit worse. Installation was simple and quick.

Walter Stanley
Castleton, Vermont