The DNA high-flow air filter for the BMW 3 E46 is designed for the factory airbox. It is washable and reusable, and its design aims to increase horsepower and acceleration while still filtering the air.
- Type: High-flow air filter
- Compatibility: BMW 3 E46 320i 98–05
- Reusable: Yes
- Washable: Yes
- Installation: In the factory airbox