The Hella air sensor, part number 8et 009 149-121, measures the airflow in the engine. It is compatible with selected versions of the Mercedes-Benz SL, SLK, Viano, and Vito.
- Type: Air sensor
- Compatibility: Mercedes-Benz SL, SLK, Viano, Vito
- OE numbers: 112 094 00 48, 112 094 01 48