- 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 "LS150101" - Not available
BMW - 3 (E46, WB), 5 (E39, WB), 1, 7 (E65, WB), X3; AUDI - A4, TT; SEAT - Arosa, Leon; VW - Polo, Golf