K&N 15-18 Audi A4 L4-2.0 F/I Replacement Drop In Air Filter Engine Components>Engine Hardware These BBK catted H pipes

These BBK catted H pipes will install directly to the factory exhaust headers or any aftermarket shorty exhaust and feature factory O2 sensor placement for simple direct installation

The world's premier traction aid

Our larger box replaces the smaller OEM box

full-bodied sound to the mufflers

With this combination of components

K&N 15-18 Audi A4 L4-2.0 F/I Replacement Drop In Air Filter Engine Components>Engine Hardware These BBK catted H pipesK&N washable, reusable High Flow Air Filters feature a state of the art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10 Year Million Mile Limited Warranty. K&N drop in replacement filters are designed to install easily into your