Bosch Oxygen Sensor P/N:16643
Bosch 16417 oxygen sensor for the 2012-2017 BMW 640i 6-cylinder 3.0L and other vehicles reads the air-fuel ratio in the exhaust and reports it to the ECU. As a downstream Bosch O2 sensor, it gives the ECU the feedback it needs for stable combustion control and helps reduce emissions.
An exhaust leak, a misfire or a wiring fault can be behind a check engine light, a rough idle or poor fuel economy just as well, so find the cause before you buy a sensor. If the downstream sensor is the cause, this one replaces it.
The 2012-2017 BMW 640i 6-cylinder 3.0L, the 2011-2017 BMW X3 6-cylinder 3.0L and the 2013-2017 BMW 640i Gran Coupe 6-cylinder 3.0L all fit this sensor, along with more BMW models. If your BMW is not named here, look up its year and engine in the "Vehicles it fits" section.
Fit and size
Build and materials
This listing is one oxygen sensor with its wiring harness. A mounting bracket is not included, and an old one may not be reusable. The number of sensors a car needs varies by vehicle.
Does this oxygen sensor fit the 2011-2017 BMW X3 6-cylinder 3.0L?
Yes, Bosch 16417 is listed for the 2011-2017 BMW X3 6-cylinder 3.0L and is a downstream sensor. For another BMW, look up its year and engine in the "Vehicles it fits" section.
Does this oxygen sensor come with its wiring harness?
Yes, the sensor comes with its wiring harness. A mounting bracket is not included.
What thread size and hex size does this oxygen sensor have?
The thread is M18 - 1.5 and the hex is 22 mm. The length from the sealing surface to the end of the connector is 26.6 in.
Is this Bosch sensor a heated narrow-band type?
Yes, this downstream oxygen sensor is a heated, narrow-band switching type with an integrated heater element, and it reaches operating temperature in under 10 seconds.
How long is the warranty on the Bosch 16417?
Bosch backs the 16417 with a 1-year, unlimited-mileage warranty for non-commercial passenger cars and light trucks.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.