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BOSCH Oxygen Sensor - 16139

Bosch Oxygen Sensor - 16139

BOSCH
Availability:
5+ in stock, ready to be shipped

Ships same or next business day

SKU 16139
$129.79 - $129.79
$129.79
$129.79 - $129.79
$129.79
CALIFORNIA WARNING

Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which can cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information see www.P65Warnings.ca.gov/motor-vehicle-parts.

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BOSCH

Oxygen Sensor

This product also goes by these part numbers: 11 78 8 611 294, 11788611294, 16139

This part also goes by the following cross reference.

Cross Reference Part Number: 11788611294

Fits These Vehicles 16 applications
BMW
Make Model Engine Years
BMW 340i 2016–2018
BMW 340i GT xDrive 2017–2019
BMW 340i xDrive 2016–2018
BMW 440i 2017–2020
BMW 440i GC 2017–2020
BMW 440i GC xDrive 2017–2020
BMW 440i xDrive 2017–2020
BMW 540i 2017–2019
BMW 540i xDrive 2017–2019
BMW 640i GT xDrive 2018–2019
BMW 740i 2016–2019
BMW 740i xDrive 2017–2019
BMW M240i 2017–2021
BMW M240i xDrive 2017–2021
BMW X3 2018–2019
BMW X4 2019–2019

Fitment data last updated: 2026-07-18

Fits 16 vehicle applications Check vehicle fitment before ordering View fitment

About this Oxygen Sensor

The BOSCH 16139 oxygen sensor measures the oxygen in the exhaust so the engine computer can keep the fuel mixture correct. Sensors before the catalytic converter control the mixture; sensors after it monitor the converter's efficiency.

Frequently asked questions

What does an oxygen sensor do?

It reports how rich or lean the exhaust is, and the engine computer adjusts fuel delivery in response. A faulty sensor can make the engine run too rich or too lean.

What are the signs of a failing oxygen sensor?

A check-engine light with oxygen-sensor or fuel-trim codes, poorer fuel economy, rough idle, or a failed emissions test. Exhaust leaks near the sensor can cause similar codes, so check for those too.

How do I know which sensor I need?

Sensors are specific to their position: upstream (before the catalytic converter) or downstream (after it), and on V engines, bank 1 or bank 2. The fault code usually identifies the position; check the product details for the position this sensor fits.

Can I replace an oxygen sensor myself?

Usually, yes, using an oxygen-sensor socket. Many new sensors come with anti-seize already on the threads; if not, use a sensor-safe compound only on the threads, and keep it off the sensor tip.

How do I make sure this oxygen sensor fits my car?

Compare the part numbers listed on this page with the number on your old part or in your vehicle's parts catalog, and check the fitment information. If you are unsure, contact us with your VIN before ordering.

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