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57-0127
$94.99 USD
MSRP $146.99 35.4% Off
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K&N 57-0127 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 Height3.938 in (100 mm)
Air Filter Large End Diameter5.031 in (128 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
California RestrictedNot legal for sale or use in California
Clamp MaterialSteel
Clamp StyleRegular
Clamps Included1
Intake Pipe Color / FinishBlack
Intake Pipe MaterialFlex Hose
Product Box Height7 in (178 mm)
Product Box Length7 in (178 mm)
Product Box Width7 in (178 mm)
Product Style57i Series International Kits
Replacement FilterRC-5128
Street Legal In All US States No
TUV Approved (Europe)No
TypeGen I
Weight2.1 lb (1 kg)

Customer Feedback

Be the first to review part 57-0127
I bought this filter for my brothers 328i BMW and just like every other K&N filter I've purchased, it's solid. The Germans recommend changing the oil every 10,000 miles and so this filter is perfect. After changing the oil and installing the filter, the car rides smooth. Thanks I've been a customer for a while and you will continue to have my support.

Sergio
Los Angeles, California
Fits better than stock filter. Definitely noticed more power and slight increase in throttle response on my turbocharged BMW 335i. Faster spool up and noticeably harder pulls under full throttle. I've been using K&N filters on my turbocharged cars for 15 years, always with the same results. Best performance filters on the market.

Mike S
Massachusetts
Just purchased a K&N drop-in air filter for my 07 BMW 335i and I am very pleased with the results. It gave my exhaust a throaty-er sound and helped with acceleration too just like K&N claims. Overall it is a great product at a great price.

Billy M
Ontario , Canada