The DNA R-AD29RS25-0R high-flow air filter is designed for the factory airbox of the Audi A4 8W/B9 1.4 TFSI. It is washable and reusable, and is designed to increase horsepower and acceleration while providing filtration.
- Type: High-flow air filter
- Vehicle manufacturer: Audi
- Vehicle model: A4
- Series: 8W/B9
- Engine: 1.4 TFSI
- Compatible years: 2015–2019
- Application: Factory airbox
- Washable: Yes
- Reusable: Yes