Performance Intake Kit
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K&N Performance Intake Kit

Part No. 57-0574 Warranty Details  

Disclaimer: This product is not authorized to be shipped/picked-up CA.

Fit of this part varies by vehicle & equipment specs Type of Fit

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.

Product Features:
  • 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┬«
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Clamp Material:Stainless Steel
Filter Color:Red
Filter End Cap Finish:Chrome
Filter Type:Cotton Gauze


by PowerReviews
K&NPerformance Intake Kit

(based on 1 review)

Ratings Distribution

  • 5 Stars



  • 4 Stars



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  • 1 Stars



Reviewed by 1 customer

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Better on Gas

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from Barron, WI

Verified Buyer


  • An hour to install
  • Good instructions
  • My Gas mileage went up
  • Noise not bad


    Best Uses

      Comments about K&N Performance Intake Kit:

      Everyone warned me it would be loud but I have not noticed a big change in the sound from my 2001 S4. The installation was quick with the instructions being clear and with decent pictures. The included instructions were in black and white but I downloaded a full color copy from the website that helped in some of the unclear pictures. Since I put on the K&N I can't comment on power except I can now maintain better turbo boost through the power band. As for gas mileage...I have driven for about 1.5 weeks and have noticed a dramatic upward swing. Granted I am using the onboard computer to calculate the mileage but the average has gone up by a mile per gallon and is still climbing. That tells me that an S4 with a basic chip mod is starving for air with the stock air box.

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