The DENSO DMA0209 mass air flow sensor measures airflow to the engine and operates electrically. It is designed for the Audi A4 8D2 B5 with a 2.8-liter engine and quattro drive, for model years 1995–1997.
- Type: Mass air flow sensor
- Operation: Electric
- Number of pins: 3
- Quality: OE
- Engine displacement: 2771 cc
- Engine power: 128 kW
- Compatibility: Audi A4
- Equivalent codes: AUDI 078133471A, AUDI 078133471AX, HITACHI AFH7008B, VW 078133471A, VW 078133471AX, HELLA 8ET009142411, HITACHI 135047