K&N Performance Air Intake System (57S-2003) Audi > Ur-Quattro 5mm bore and dual 5

5mm bore and dual 5 stud bolt pattern for both 100 and 112mm PCD fitments

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

unless existing pressure is being lost

K&N Performance Air Intake System (57S-2003) Audi > Ur-Quattro 5mm bore and dual 5The 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