- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- Calorstat by Vernet "LS140478" - Not available
AUDI - A4, A3, TT, A5, A6; MAZDA - MPV II (LW); ALFA ROMEO - 159, 156; BENTLEY - Continental