K&N drop‑in High‑Flow air filter for Mazda 3 L4‑1.6L (2003–2014 fitment listed) uses layered, oiled cotton media to improve airflow and is washable and reusable. Designed to increase horsepower while protecting the engine, this replacement installs in the factory air box and is backed by K&N's No‑Hassle Lifetime Limited Warranty; consult the part fitment list to confirm vehicle compatibility.
K&N 04 Mazda 3 L4-1.6L Drop In Air Filter