The Mann Filter C3394 air filter is intended for the BMW E30 and 3 Series. It is designed for BMW M10 and M20 engines manufactured before 1986 and filters particles and contaminants from the intake air, helping to protect the engine.
- Type: Engine air filter
- Compatibility: BMW E30, BMW 3 Series
- Engines: BMW M10 and M20
- Engine production year: Before 1986