Looking to replace the worn out and dirty OEM air filter in your 2003 Audi RS6. Backed by decades of performance K&N filters deliver a quality performance drop in filter option for the RS6 which is sure to let your engine breathe nice cold air for maximum performance.

K&N automotive replacement air filters are designed to add horsepower and acceleration to your car or truck while providing exceptional engine protection. K&N replacement air filters are simple to install and backed by the K&N Million Mile Limited Warranty. Not only are K&N air filters washable and reusable, they can last up to 50,000 miles between servicing, depending on driving conditions.