Performance 57i Series Intake Kit. 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.
K&N 57-0479 Performance 57i Series Intake System for Audi TT/TT Quattro 1.8L
K&N 57-0656 Performance 57i Series Air Intake Kit for 05-09 Mazda MX-5 1.8L/2.0L
K&N 57-0047 Performance 57i Series Air Intake System for Mazda Miata/MX-5 1.6L
K&N 57i INDUCTION KIT FOR BMW E46 325 2.5 2000-2005 57-0366 KN 3 SERIES
