K&N Filters 57S-4000 57i Series Induction Kit
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The K&N 57S-4000 Performance Airbox replaces the restrictive factory air filter and air box lid. K&N performance air boxes are designed to dramatically reduce air flow restriction as well as smooth and straighten air flow. This allows your engine to inhale a larger amount of air than the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. The 57S-4000 Performance Airbox comes with an oversized conical K&N high-flow air filter and an injection molded air box lid with the K&N logo embossed on top. The air filter can be used for up to 100,000 miles before servicing is needed depending on driving conditions. This performance air box is relatively easy to install into the air box base with commonly available tools. K&N builds these air box systems to last for the life of your vehicle and they are backed by K&N's Million Mile Limited Warranty. Some K&N 57S Series Performance Airboxes are compliant with the latest TUV emissions and sound regulations. Check the K&N catalog or website for vehicle applications and specific TUV status for each vehicle and air intake.
K&N Filters 57S-4000 Fitment Data Includes But May Not Be Limited To The Following Vehicles (If you have fitment questions or concerns, please contact us prior to ordering): 2013-2018 Ford Focus | 2016-2018 Ford Focus | 2014-2014 Ford Transit Connect | 2015-2015 Ford Transit Connect
Manufacturer Fitment & Product Notes: Incl. Red Air Filter/Tubing/Adaptors/Hardware; Not Legal For Sale Or Use In California 57S Series - Air Filter w/Lid
Manufacturer Part # 57S-4000
Product UPC # 024844282903
We are an authorized retailer of all K&N Filters products. If you ever have manufacturer warranty concerns or questions on your 57S-4000 K&N Filters 57i Series Induction Kit you purchased from us, we can help! Call us today, we are a family owned & operated company that greatly values all of its customers, and unlike our competition, we are here to assist with all future warranty concerns!
**Picture may not be an exact representation of the product received.**
Warning: This product can expose you to chemicals, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov
