K&N 57-0615 - 57i Series Generation I Black Composite Cold Air Intake System with Red Filter | PTUNING.COM - Performance Auto Parts Warehouse, Installation, and Dyno Tuning
Performance Air Intake System
KNN570189 - K&N Air Filter | Mini Air Filters | minisport.com Mini Sport
K&N Cold Air Intake Kit: Increase Acceleration & Engine Growl, Guaranteed to Increase Horsepower: Compatible with 2.5L, L5 2005-2011 FORD (Focus XR5, Focus II), 57I-2503
K&N Air filter 57i Induction Kit for 2.8 VR6: WC129KN5700731 | Heritage Parts Centre US