K&N drop-in High-Flow air filter for Ford Focus (1998–2004) and Focus SVT (2002–2004) replaces the factory paper element with layered oiled cotton media to improve airflow and help increase horsepower. The washable, reusable design is engineered to last the life of the vehicle and installs easily into the factory airbox. K&N backs these filters with a long-term limited warranty and recommends regular servicing per driving conditions.
K&N 98-04 Ford Focus / 02-04 Focus SVT Drop In Air Filter