- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- AUDI - 100, 80, A6, Coupe, 90; FIAT - UNO, Tipo; ALFA ROMEO - 33, 164; CHEVROLET - Astro, Corvette; FORD - Sierra, Maverick