Heated upstream (pre-catalyst) oxygen sensor; fits left or right banks.
Oxygen sensors measure exhaust oxygen. Their signals are used by the vehicle computer to adjust the air/fuel ratio and test vehicle emissions. Degraded oxygen sensors reduce engine performance and fuel efficiency, and increase harmful tailpipe emissions. They can also turn on the Check Engine Light and cause a car to fail an emissions test.
This Part Fits the Following Vehicles
|BMW||Z4||M Coupe||S54 3.2L|
|BMW||Z4||M Roadster||S54 3.2L|