For 2002-2005 BMW 745i 745Li Base V8 4.4L Downstream Oxygen O2 Sensor 234-4470
27,22 €
Q: How do I know the O2 sensor is good or not?. 1 x Oxygen Sensor. If the sensor is good, further diagnosis is required. There're many different codes for specific functional failures, which are NOT necessarily relevant to the sensor.
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