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57-1002
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MSRP $556.79 44.9% Off
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K&N 57-1002 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   11 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 57-1002 Air Intake fits some BMW 323Ci, BMW 323i, BMW 325Ci, BMW 325i, BMW 325Xi, BMW 328Ci, and BMW 328i models. See vehicle applications link for details.
The K&N 57-1002 FIPK air intake system replaces the restrictive factory air filter and air intake housing in some BMW models. K&N intakes are designed to dramatically reduce intake restriction as they smooth and straighten air flow. This allows your BMW’s 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 57-1002 air intake comes with a K&N high-flow air filter and a heat shield that installs into the lower air box and connects to the factory fresh air tube. Air is directed past the mass air sensor and through an aerodynamically engineered intake tube into the engine’s throttle body for a guaranteed power gain. The tube accommodates the crankcase vent tube. The oversized tapered conical 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 screw driver, 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 Gain9.69 HP @ 6090 RPM
Replacement FilterRU-4730
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
Clamps Included3
Clamp MaterialStainless Steel
Clamp StyleRegular
CARB EO NumberD-269-31
Couplers Included1
TypeGen II
Product Style57 Series FIPK
Air Filter Height6.5 in (165 mm)
Intake Pipe Color / FinishBlack
Intake Pipe MaterialHigh-Density Polyethylene
Street Legal In All US StatesYes
TUV Approved (Europe)No
Weight8.8 lb (4 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 57-1002 Air Intake Product Reviews

Saturday, January 13, 2018 - Part 57-1002
Love it

Edward Berland
Riverview, Florida
Tuesday, September 26, 2017 - Part 57-1002
Just installed on my 325xi, and so far so good. Very simple and easy instructions, and the packaged arrived to my house 3 days after I ordered it. Only complaint is that I am not hearing a small squeal when in the lower gears. Otherwise looks and sounds great. Hard to tell if there is any power increase, but I have only had it installed a week.

Perry Eliassen
Spokane, Washington
Friday, July 22, 2016 - Part 57-1002
Incredible! I am an 18 year old on a very tight budget and had to work 2 weeks to get the money for it, and I was worried I would be disappointed in it. I mainly bought it for sound improvements and I got just that. With every push of the gas pedal I get a very distinct PSSHH sound as it gulps in air, and then it basically increased the volume of my engine. It did nothing to my exhaust sound, but the engine itself sounded far far better. Furthermore, I do not see a huge change in horsepower or MPG as 9HP is nothing drastic, but I am sure it still helps. I have a 2001 BMW 325i and this filter kit came with everything needed and I installed it within 90 minutes, and used tools I found around the house. This is the first and only modification I have ever done to any vehicle and the instructions were clear and easy. I am beyond happy with this purchase, and have recommended it to many friends.

Carson Litteral
Prospect, Kentucky