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The K&N drop-in replacement High-Flow air filter for Audi RS6/RS7 4.0L V8 (2013–2017) uses layered, oiled cotton media to improve airflow while capturing contaminants and is washable and reusable. Designed to install easily into the factory air box, the filter aims to increase horsepower and is backed by K&N's No-Hassle Lifetime Limited Warranty. Choosing this replacement reduces disposable filter waste and provides long service life.
K&N Replacement Round Air Filter for 13-14 Audi RS6/RS7 4.0L V8
