The DNA high-flow air filter for the BMW Z4 E85/E86 is designed to fit in the factory airbox. It is washable and reusable, and is designed to increase horsepower and acceleration while filtering the air.
- Type: High-flow air filter
- Manufacturer: BMW
- Model: Z4
- Body series: E85, E86
- Engine: 2.2i
- Application years: 2003–2006
- Washing: Washable
- Reuse: Reusable
- Installation: In the factory airbox