These Audi RS models have two engine air filters, and require one of each 33-3031 and 33-3032. Both filters have a durable urethane sealing lip, precision-molded to provide an air-tight seal in the factory air box. At the core of these performance air filters is K&N's oiled cotton gauze filter media. Four layers of cotton gauze are offset from one another an impregnated with oil to provide a high-flowing filtration media that also ensures excellent filtration efficiency. Your Audi V8 will thank you for allowing it to breathe easier and perform better.
Another benefit of a K&N replacement air filter is they're washable and reusable. About every 50,000 miles or so, depending on driving conditions, simply service the filters with a K&N Recharger air filter service kit. The cleaning process is easy to follow and K&N provides step-by-step instructions. Since you'll no longer have to replace disposable are filters over and over again, you can even save money on maintenance cost. K&N replacement air filters are backed by 10-year/million mile limited warranty and will not void your factory warranty, so rest assured that these air filters are a risk-free performance upgrade.
The 33-3031 and 33-3032 replacement air filters are designed to increase horsepower and torque for 2010-2015 Audi RS4 or RS5 4.2L V8 models (requires both filters)