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57-2533
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K&N 57-2533 Air Intake

57 Series FIPK > Performance Intake Kit
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   5.0 out of 5 stars   2 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)
  • Replaces entire factory air intake system
  • Free-flowing high density polyethylene tube
  • Easy to install, usually in 90 minutes or less
  • Washable and reusable lifetime air filter
  • K&N Million Mile Limited Warranty
The K&N 57-2533 Air Intake fits some Ford Ranger, and Mazda B3000 models. See vehicle applications link for details.
The K&N 57-2533 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 57-2533 air intake comes with a K&N XStream Top air filter designed for higher air flow and durability. A heat shield is included that installs into the previous air box space and allows air to be 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 air temperature sensor. The XStream Top 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 couple of screwdrivers, 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 Gain5.55 HP @ 4721 RPM
Air Filter ColorRed
Air Filter Height6.5 in (165 mm)
Air Filter Large End Diameter6 in (152 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
CARB EO NumberD-269-22
Clamp MaterialStainless Steel
Clamp StyleRegular
Clamps Included5
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 FilterRX-4730
Street Legal In All US StatesYes
TUV Approved (Europe)No
TypeGen II
Weight10 lb (4.5 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

K&N 57-2533 Air Intake Product Reviews

Friday, October 14, 2016 - Part 57-2533
I really didn't expect much of a change with the intake system aside from maybe just some better noise. It does add a nice aggressive tone when you're speeding up especially between 2nd and 3rd gear. It's not a giant help in horsepower but I have noticed in the mid gear range I am able to get to speed a little quicker which has been helpful in my day to day city driving. I tend to leave my foot a little heavy on the gas so I can't really speak on the fuel economy. Altogether I am more than pleased with the intake systemt, it was easy to install with instructions step by step, it has made noticeable improvements to sound and speed. If you have the money to spend, it's a great addition to the tiny truck

Caleb Laws
Fort Collins, Texas
Wednesday, October 22, 2014 - Part 57-2533
Hello all @ KN,

I just wanted to take a little time to contact KN and say thank you for such a great product. Since buying the complete air intake system I have seen a huge difference in the performance of my 1999 Ford Ranger 4.0 Prerunner. I will always use the kn product in the future with all of my vehicles now that I have seen how a KN filter helps the performance of my Ranger. I will also highly recommend it to anyone who will be looking for a quality air filter going forward.

Willie M
Murrieta, California