The DNA air filter for the Smart ForFour is a high-flow filter that fits the factory airbox. It is washable and reusable, and is designed to increase horsepower and acceleration while providing filtration.
- Type: High-flow air filter
- Compatibility: Smart ForFour 1.1 l 454 04-06
- Fitment: Fits the factory airbox
- Maintenance: Washable and reusable