- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- NGK "90474" - Not available
VOLVO - 440 K, 740, 460 L, 940, 480 E; AUDI - Coupe, 100; ALFA ROMEO - 33, Alfasud; FIAT - Tipo, UNO
Additional numbers
NGK:
OZA721-EE17