- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- NGK "91388" - Not available
FIAT - Barchetta, Panda, Multipla, Marea, Siena; AUDI - A4, A6; CITROËN - Xsara, C5; BMW - 3, 5; LANCIA - Lybra