The K&N drop-in High-Flow air filter for Audi A3 1.6L (2003–2010) replaces the factory element with washable, reusable layered oiled cotton media engineered to improve airflow and help increase horsepower. It installs easily as a direct drop-in into the factory airbox and is covered by K&N's No-Hassle Lifetime Limited Warranty. Under normal highway driving the filter typically needs cleaning about every 75,000 miles.
K&N 03 Audi A3 L4-1.6L Drop In Air Filter