- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- Metzger "0893409" - Not available
VW - Golf, Bora, Passat, Phaeton, New Beetle; AUDI - A8, Q7; BMW - 3, 5; SEAT - Leon, Toledo