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57-0393
$134.99 USD
MSRP $244.99 44.9% Off
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K&N 57-0393 Air Intake

57i Series Kits > Performance Intake Kit
  • 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®
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 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]

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 ShapeRound
Base Outside Diameter5.375 in (137 mm)
California RestrictedNot legal for sale or use in California
Clamp MaterialSteel
Clamp StyleRegular
Clamps Included2
Flange Inside Diameter4 in (102 mm)
Flange Length0.625 in (16 mm)
Flange TypeCentered
Height5 in (127 mm)
Intake Pipe Color / FinishBlack
Intake Pipe MaterialFlex Hose & Rubber 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
Top Material/FinishChrome
Top Outside Diameter4.5 in (114 mm)
Top StyleMetal
TUV Approved (Europe)No
TypeGen I
Weight4.2 lb (1.9 kg)

Customer Feedback

Quality product, fair price, and quick delivery made this purchase a win win. I love driving a BMW and I love not paying the dealer to change my oil. I will be ordering again.

Jonathan Forrest
Vermont
The filters were easy to install thanks to the included instructions. They work great and seem to have quieted the fan noise a bit. It will be awhile before I use the cleaning kit but I sure do like the top quality of these filters. I am purchasing a new car in June and already have the part numbers for the engine air filter as well as the in cabin filter. I have a 2013 3series BMW and would love to have an in cabin filter for it.

Stew Smith
San Diego, California
What can I say. K&N Rocks! I've installed K&N on everything from my BMW M3 to my Jeep Wrangler. Why not my new BMW F800 GS Adventure?

Chris
Utah