Genuine BMW B58 Oxygen Sensor 540 mm - Downstream Post Cat O2 Lambda Probe
Keep your B58 engine running at its best with this Genuine BMW oxygen sensor for the post catalytic converter position. Also known as the downstream O2 sensor or rear lambda probe, this OEM BMW part restores precise air fuel ratio control, improves drivability, helps reduce emissions and maintains fuel economy. Perfect direct replacement for M140i, M240i, 340i, 440i, 540i, 640i, 740i and X3 M40i models.
This is the correct 540 mm lead length sensor with factory connectors for a plug and play installation. As BMW specialists, we have supplied and fitted this part on many B58 cars and customer feedback on performance and reliability has been excellent.
Why choose a genuine BMW lambda sensor
- OEM quality and accuracy for B58 closed loop fuel control
- Direct fitment with original plug and mounting point
- Helps resolve check engine lights related to rear O2 feedback and catalyst efficiency
- Supports optimal performance, smooth idle and correct fuel trims
- Designed specifically for B58 engines across F series and G series platforms
Key search terms
BMW B58 oxygen sensor, BMW B58 lambda sensor, BMW rear O2 sensor, BMW post cat O2 sensor, BMW downstream oxygen sensor, BMW lambda probe, 540 mm O2 sensor, Genuine BMW O2 sensor, OEM BMW oxygen sensor M140i M240i 340i 440i 540i 640i 740i X3 M40i, F20 F21 F22 F23 F30 F31 F34 F32 F33 F36 G11 G12 G30 G31 G32 G01.
What is included
- 1 x Genuine BMW post catalytic converter oxygen sensor
Compatibility - BMW B58 engine
1 Series
- F20 LCI 09/2015 - 06/2019
- M140i and M140ix
- F21 LCI 09/2015 - 06/2019
- M140i and M140ix
2 Series
- F22 09/2015 - 06/2017
- M240i and M240ix
- F22 LCI 09/2016 - 12/2019
- M240i and M240ix
- F23 09/2015 - 06/2017
- M240i and M240ix
- F23 LCI 10/2016 - 12/2019
- M240i and M240ix
3 Series
- F30 LCI 10/2014 - 10/2018
- 340i and 340ix
- F31 LCI 10/2014 - 06/2019
- 340i and 340ix
- F34 GT LCI 09/2015 - 12/2019
- 340i and 340ix
4 Series
- F32 04/2015 - 02/2017
- 440i and 440ix
- F32 LCI 05/2016 - 12/2019
- 440i and 440ix
- F33 03/2015 - 02/2017
- 440i and 440ix
- F33 LCI 05/2016 - 12/2019
- 440i and 440ix
- F36 Gran Coupe 03/2015 - 02/2017
- 440i and 440ix
- F36 Gran Coupe LCI 05/2016 - 12/2019
- 440i and 440ix
5 Series
- G30 10/2015 - 06/2019
- 540i and 540ix
- G31 03/2016 - 06/2019
- 540ix
6 Series
- G32 GT 09/2016 - 06/2019
- 640i and 640ix
7 Series
- G11 10/2014 - 01/2019
- 740i
- G12 10/2014 - 02/2019
- 740i, 740ix, 740Li and 740Lix
X Series
- X3 G01 10/2016 - 07/2019
- X3 M40ix
Part number
11788611294
Fitting and installation
Direct replacement for the rear post cat position on B58 models listed. For professional fitting, book with Nforcd in Warwickshire. Request a quote at Sales@nforcd.com.
Compatibility check
We will verify fitment before dispatch. Provide your UK registration or the last 7 digits of your VIN at checkout to ensure this oxygen sensor matches your vehicle.
Manufactured by
BMW
Warranty
Two years manufacturer warranty for UK customers and one year manufacturer warranty for international customers if VIN is provided during checkout on compatible vehicles.