33-2209 K&N Replacement Air Filter, 2000 - 2013 Audi A4/ Audi S4/ Audi Quattro / Seat Exeo AFR 4 LAYERS OF PROTECTION: Multiple

4 LAYERS OF PROTECTION: Multiple layers of premium cotton gauze treated with a specially-designed tacking agent work together to create an intricate mesh of engine filter media that is designed to block and trap harmful contaminants

Quiet operation and pulse width modulation compatibility are delivered via the turbine impeller and computer-balanced armature

This part is recommended for replacing the plastic OEM plug in any engine build

Isuzu Vehicross

This results in increased usable power and acceleration across the RPM range

33-2209 K&N Replacement Air Filter, 2000 - 2013 Audi A4/ Audi S4/ Audi Quattro / Seat Exeo AFR 4 LAYERS OF PROTECTION: MultipleK&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 No Hassle Lifetime Limited Warranty. K&N drop in replacement filters are designed to install easily into your