The K&N 33-2125 high-flow air filter is a reusable, washable engine filter designed to improve airflow, capture contaminants, and increase horsepower and acceleration. It features four layers of cotton gauze treated with a special bonding agent to create a multi-layer filtration medium. It is pre-oiled and fits in the factory air box.
Under normal highway driving conditions, it requires cleaning every 120,000 km. It is designed to last for the lifetime of the vehicle.
- Type: High-flow air filter
- Maintenance: Washable and reusable
- Cleaning interval: Every 120,000 km under normal highway driving conditions
- Filter material: Cotton gauze
- Filter layers: 4
- Pre-oiled: Yes
- Installation: In the factory air box
- Compatibility: Audi A4, Audi A6, Audi RS4, Audi S4, Skoda Superb, Volkswagen Passat