- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- Motaquip "LVOS1521" - Not available
AUDI - A8, A4, A6, A3, TT; BMW - 3, 5; ALFA ROMEO - 156, 159; BENTLEY - Continental