The oxygen sensor actively measures the exhaust output from the engine in order to determine the proper mixture for the car. If you are having trouble adjusting the mixture on your car to proper levels, there is a high chance that you may have a faulty oxygen sensor. The oxygen sensor is located before the catalytic converter because the air/fuel mixture ratio cannot be accurately calculated after the exhaust gases have been processed through the CAT.
Oxygen Sensor, Lambda Monitor Probe (Length = 955 mm), E36 318i/is/iC/ti M44 (1 after catalyst), Each Brand: Bosch [More Info]
$120.75
11-78-1-427-884-M209
Oxygen Sensor, on CATALYTIC, 990mm, 323i/is/iC (1998-99), 328i/is/iC (1996-99), M3 w/ 3.2L (1996-99), each. Some later E36 models use more than one sensor. Please check your car first before ordering. Brand: NTK [More Info]
$104.50
11-78-1-437-943-M209
Oxygen Sensor, on MANIFOLD, 990mm, 328i/is/iC (1996-99), M3 w/ 3.2L (1996-99), each. Some later E36 models use more than one sensor. Please check your car first before ordering. Brand: NTK [More Info]
