K&N reusable Filtercharger Air Filters are designed to increase horsepower and acceleration while providing excellent filtration. No modification is required to the stock airbox. Flat panel filter measures 10 3/8 x 5 9/16 inches (264 x 143mm).
Fits 1998-2004 Ford Focus (except C-Max, RS, and 2004 Focus II). Also fits 2002-08 Ford Transit Connect with 1.8L engine (gas or diesel).