K&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 factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!
Technical BulletinThis Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2008 | Audi | A4 | Base |
| 2003-2009 | Audi | A4 | Cabriolet |
| 2002-2008 | Audi | A4 Quattro | Avant |
| 2002-2008 | Audi | A4 Quattro | Base |
| 2004-2009 | Audi | A4 Quattro | Cabriolet |
| 2007-2008 | Audi | RS4 | Base |
| 2008 | Audi | RS4 | Cabriolet |
| 2004-2008 | Audi | S4 | Avant |
| 2004-2008 | Audi | S4 | Base |
| 2004-2009 | Audi | S4 | Cabriolet |
Most items ship directly from authorized distributors. Lead times vary by brand and availability.
Returns are permitted within 30 days of receiving your order under specific conditions. For more information, view our Return & Refund Policy
Professional installation available at our Metro Atlanta facility. Contact us to schedule your build.
