The K&N washable, reusable high‑flow drop‑in air filters are designed to improve airflow and provide long‑life engine protection for BMW M5/M6 and M4/M3 applications listed. These filters use layered, oiled cotton media to capture contaminants while increasing airflow and potential horsepower; they install easily into the factory airbox and are backed by K&N's lifetime limited warranty for extended service life.
K&N Replacement Air Filter for 11-14 BMW M5/M6 4.4L V8 / 2015 M4/M3 3.0L I6 (2 per box)