The Filtron AK371/8 air filter is designed for the Audi A4 and filters the engine intake air. It fits the Audi A4 Allroad B8, A4 B8 and A5, as well as the Q5 with a 2.0D engine, for models from 11.07 to 05.17.
- Type: Engine air filter
- Compatibility: Audi A4, Audi A4 Allroad B8, Audi A4 B8, Audi A5, Audi Q5 2.0D
- Application period: 11.07–05.17