- 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 "LS140137" - Not available
VW - Polo, Golf, Passat, Transporter, Vento; AUDI - A6, A4; SEAT - Cordoba, Ibiza; FORD - Galaxy