Also Known As: Lambda Sensor, Oxygen Sensor, O2 Sensor, Wideband, Wide Band. Shape: E60, E61. Direct Fit Wideband Oxygen SensorBMW M5 5.0. The Oxygen (Lambda) sensor is a sensor fitted in the exaust system which monitors the exhaust gasses and lets the ECU know if any changes in are needed in the air/fuel mixture.
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