The K&N drop-in High-Flow air filter for 2003–2006 Lancer Evolution VIII/IX and select Mitsubishi models (1996–2010) is a washable, reusable replacement that installs into the factory air box. Layered, oiled cotton media is engineered to improve airflow while capturing contaminants; K&N coverage includes a long limited warranty and the filter is intended to increase airflow and be serviceable for vehicle life.
K&N 03-06 Lancer Evo 8/9 Drop In Air Filter