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K&N High-Flow drop-in replacement air filter for Audi A4 L4‑2.0 (2015–2018) uses layered, oiled cotton media to improve airflow while trapping contaminants. The washable, reusable filter is engineered to increase airflow and can yield horsepower gains while providing long service life. K&N covers these filters with a No‑Hassle Lifetime Limited Warranty and designs them for easy installation into the factory air box.
K&N 15-18 Audi A4 L4-2.0 F/I Replacement Drop In Air Filter
