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57i Series Kits > Performance Intake Kit

 List Price: $236.31
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57-0446
 
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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 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®
Available Information
Installation Instruction Sheet
57-0446 Vehicle Applications


Part 57-0446 Product Specifications
Product Style: 57i Series International Kits
Replacement Filter: RC-4500
Air Filter Color: Red
Air Filter Outlet Shape: Not Flanged
Street Legal In All US States: No
Air Filter Height: 5.125 in (130 mm)
TUV Approved (Europe): No
Air Filter Material: Cotton Gauze
Clamp Material: No Clamps Required
Clamp Style: No Clamps Required
Type: Gen I
Intake Pipe Color / Finish: Black
Intake Pipe Ports: All intake tube ports needed for the specified applications are included
Vacuum Tubing Included: No
Air Filter Large End Diameter: 5.188 in (132 mm)
Base Outside Diameter: 5.188 in (132 mm)
California Restricted: Not legal for sale or use in California
Flange Inside Diameter: 2.75 in (70 mm)
Flange Length: 0.75 in (19 mm)
Flange Type: Offset
Height: 5.125 in (130 mm)
Mass Air Flow Sensor Adapter Included: Mass Air Flow Sensor Adapter Included When Required
Top Material/Finish: Chrome
Top Outside Diameter: 3.5 in (89 mm)
Top Style: Metal
Weight: 1.9 lb (0.9 kg)
Product Box Length: 9 in (229 mm)
Product Box Width: 9 in (229 mm)
Product Box Height: 9 in (229 mm)



Customer Feedback      Be the first to review part 57-0446

Have filters, now, for our old 1987 F250 Ford truck, our old 1987 Mecedes Benz 300TD Diesel wagon and our 1996 BMW Z3.
We're happy with all three filters (so far...).
Jim Troup, Renton, Washington
I started using this filter. I ordered from your shop at my first oil change for my BMW G650GS as it's not a common part locally. Since then, I've never bought anywhere else. Always quick delivery, correct item, good price and no hassle. I hope you keep this product in your line-up and thanks for good service over the last +34,000 miles.
C. Ratliff, Phoenix, Arizona
I installed this filter in my 2008 BMW 528i in under 2 minutes from hood-up to hood-down. After starting the car in the garage I didn't notice any real difference in the sound but once I started driving it I could hear and feel the difference, especially in sport mode. And as an added benefit, it looks like my fuel economy has improved by about 1 mpg. According to the car's computer, in the 1,200 miles since I put it on, my average economy has gone from 25.2 to 26.2 mpg. Very happy.
Jim, Newbury Park, California