The DNA R-AD29RS25-0R high-flow air filter is designed to fit in the factory airbox of the Audi A4. It is washable and reusable, and is designed to increase horsepower and acceleration while still providing filtration.
- Type: High-flow air filter
- Manufacturer: DNA
- Installation: In the factory airbox
- Maintenance: Washable and reusable
- Compatibility: Audi A4