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K&N 57-0638

57i Series Kits > Performance Intake Kit
List Price: $325.95
Your Price: USD $179.99

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57-0638
 
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K&N 57i Series Induction Kits are specifically designed for each different vehicle and will free your car from the size restriction that comes with the factory air box. These economical kits can take a variety of different forms based on vehicle characteristics and available space under the hood. Each kit is designed to provide power throughout the RPM range. The extra surface area of these open-air air filters provide even more airflow at lower restriction than a K&N O/E replacement filter which is always limited to the size of the factory air box. The larger air filter also captures and holds more dirt increasing its service life before a cleaning is required (up to 100,000 miles). The filter is either directly attached to the engine carburetor or throttle body or indirectly through a tube assembly running from the filter to the engine. All adapters are made from high quality materials such as steel, aluminum, silicon or reinforced nylon to ensure long life. 57i Intakes are not legal for use in California and other US States adopting California emission standards.

[More Information on K&N 57i Induction Systems]
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Replaces entire factory air intake system
  • Not legal for highway use in states adopting California emission regulations
  • Washable and reusable lifetime air filter
  • Lasts up to 100,000 miles before service is required (depending on driving conditions)
  • Easy to install, usually in 90 minutes or less
  • K&N Million Mile Limited Warranty®

Product Specifications

Air Filter ColorRed
Air Filter Height5 in (127 mm)
Air Filter Large End Diameter5.375 in (137 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeNot Flanged
California RestrictedNot legal for sale or use in California
Clamp MaterialSteel
Clamp StyleRegular
Clamps Included5
Couplers Included2
Intake Pipe Color / FinishBlack
Intake Pipe MaterialHigh-Density Polyethylene & Flex Hose
Product Box Height9 in (229 mm)
Product Box Length9 in (229 mm)
Product Box Width9 in (229 mm)
Product Style57i Series International Kits
Replacement FilterRC-3600
Street Legal In All US States No
TUV Approved (Europe)No
TypeGen I
Weight3.5 lb (1.6 kg)

Customer Feedback

After decoding BMW, I got this fitted, makes such a difference get a nice little sound after acceleration which is great. I highly recommend this filter, the buying process was easy and delivery was quick and free.

Steven
Swords, Fingal
Every BMW should have this on it from the factory. So much more aggressive sounding and improved throttle response.

John
Evansville, Indiana
K & N Filters are the best. I have them in all my vehicles except one, 2011 BMW X-5. I guess they don't have one for it yet. I have been using K & N filters for about 16 yrs now. I won't use anything else.

Louis Pistella
Clarks Green, PA