The DNA filter for the Volkswagen Passat Variant 1.9 TDI is a free-flow air filter designed to fit in the factory airbox. It is washable and reusable, and its design aims to increase horsepower and acceleration while still filtering the air.
- Type: Free-flow air filter
- Compatibility: Volkswagen Passat Variant 1.9 TDI, 2005–2013
- Cleaning: Washable
- Reusability: Reusable
- Installation: In the factory airbox