The Knecht air filter is a filter element for Audi A6 2.0 and 2.0d models from 2007–2008. It is 167.6 mm high and has an outer diameter of 151.5 mm.
- Filter type: Filter element
- Compatibility: Audi A6, Citroen C6
- Height: 167.6 mm
- Outer diameter: 151.5 mm
- Inner diameter: 78 mm
- Diameter: 87.5 mm
- Net weight: 270 g