K&N Engineering knn69-2001TWK

K&N Typhoon cold air intake for BMW M3 (E46, 2001–2005) uses a mandrel‑bent aluminum intake tube paired with a washable, reusable oiled cotton High‑Flow air filter to increase airflow. K&N states the system delivers a guaranteed increase in horsepower and torque and can extend filter service intervals up to 100,000 miles under normal highway driving. A custom heat shield protects inlet air; installation typically takes under 90 minutes. Some parts may be restricted in California—check CARB status.