K&N Performance Air Intake System (57S-2003) Audi > Ur-Quattro 3) ensures compliance with road

3) ensures compliance with road regulations

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Results showed that we achieved the best gains with the PRORam performance filter

The oversized cone shaped air filter comes with a water repellent DryCharger filter wrap to protect the filter from moisture

K&N Performance Air Intake System (57S-2003) Audi > Ur-Quattro 3) ensures compliance with roadThe K&N Performance Airbox is designed to dramatically reduce air flow restriction as well as smooth and straighten air flow. Replacing the restrictive factory air filter and air box allows your engine to inhale more air than with the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. A fully enclosed injection molded air box connects to the factory air intake hose. The removable lid