Bosch Oxygen Sensor P/N:15090
Bosch 17231 oxygen sensor for the 2011-2012 BMW X3 6-cylinder 3.0L and other vehicles measures the air-fuel ratio in the exhaust and reports it to the engine computer. This Bosch O2 sensor is an upstream wide-band unit, so the computer gets continuous readings for mixture control.
A failing oxygen sensor can show up as a check engine light, a rough idle or higher fuel use, but other faults cause the same signs. With the engine off and cool, look over the wiring and connector for cracks or melted insulation, and have a shop read the codes before you replace the sensor.
As an oxygen sensor for the 2011-2012 BMW X3 6-cylinder 3.0L, it is a direct-fit replacement, and the 2011 BMW 528i 6-cylinder 3.0L takes it too. This listing is one upstream sensor, and each of these cars takes one.
Fit and size
Build and materials
One oxygen sensor with its wiring harness.
Is this oxygen sensor replacement for the 2011-2012 BMW X3 6-cylinder 3.0L an upstream sensor?
Yes. Bosch 17231 is listed as an upstream sensor, and it fits the 2011-2012 BMW X3 6-cylinder 3.0L, which takes one.
Does this wide-band oxygen sensor come with its wiring harness?
Yes. The sensor comes with its wiring harness, and the threads already carry conductive anti-seize.
What thread size and hex size does this oxygen sensor have?
Bosch 17231 has an M18 - 1.5 thread and a 22 mm hex. Overall length is 34.1 in, and the connector end sits 32.9 in from the sealing surface.
What makes this Bosch premium oxygen sensor a wide-band type?
It uses a planar pump-cell design that measures the air-fuel ratio continuously across the full lambda range, which gives the engine computer more than the limited feedback of a switching sensor.
How long is the Bosch warranty on this oxygen sensor?
Bosch backs the sensor with a 1-year, unlimited-mileage warranty for non-commercial passenger cars and light trucks.
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