About Air Intake Systems
Audi enthusiasts know that the RS4 is a powerhouse on the track and the street. Now you can take your performance to the next level with an RS4 air intake system from NAPA Online. Our aftermarket systems are designed to bolt on easily and provide significant boosts in horsepower, torque, and fuel economy. Plus, our air intakes come with a money-back guarantee, so you can rest assured that you're getting quality products backed by our commitment to customer satisfaction.