Genuine BMW N54 Bank 2 Front Lambda Probe, O2 Sensor, upstream pre-cat oxygen sensor, regulating lambda sensor for cylinders 4 to 6. This OEM BMW sensor restores precise air fuel ratio control, improves drivability and fuel economy, and helps clear check engine lights related to mixture and emissions on N54 engines. Correct 1200mm harness length for perfect routing and plug-and-play fit on Bank 2.
Ideal for BMW 135i, 1M, 335i, 335xi, 335is and Z4 35i, Z4 35is running the N54 twin-turbo engine. If your BMW is showing rough idle, poor MPG, hesitation, rich or lean running, or emissions faults, replacing the front upstream lambda probe is a proven fix. We use this part on our own cars and for customer vehicles, and feedback has been consistently excellent.
Key details
- Part type: Front Lambda Probe, O2 Sensor, upstream pre-cat oxygen sensor, regulating sensor
- Engine: BMW N54, Bank 2, cylinders 4 to 6
- Cable length: L = 1200mm
- Fitment: OEM Genuine BMW, direct plug-and-play
- Part number: 11787558087
- Manufactured by: BMW
Keywords for search: BMW N54 O2 sensor Bank 2, 335i O2 sensor front, 135i lambda sensor, BMW 1M oxygen sensor, Z4 35i lambda probe, upstream O2 sensor N54, pre-cat oxygen sensor N54, E82 E88 E90 E91 E92 E93 E89 O2 sensor.
Why choose this Genuine BMW sensor
- Restores accurate AFR and closed-loop control for smoother throttle response
- Helps reduce fuel consumption and emissions, supports MOT pass
- Exact 1200mm lead and OEM connector for correct routing and easy installation
- Reliable, long-life performance compared with universal aftermarket sensors
Compatibility
Fits BMW E-chassis models with the N54 engine. Bank 2 front sensor, upstream pre-cat position.
1 Series
- 1' E88 11/2006 to 10/2013
- 135i
- 1' E82 11/2006 to 10/2013
- 135i and 1M
3 Series
- 3' E90 02/2004 to 09/2008
- 335i and 335xi
- 3' E90 LCI 07/2007 to 12/2011
- 335i and 335xi
- 3' E91 02/2004 to 08/2008
- 335i and 335xi
- 3' E91 LCI 07/2007 to 05/2012
- 335i and 335xi
- 3' E92 05/2005 to 02/2010
- 335i and 335xi
- 3' E92 LCI 07/2009 to 06/2013
- 335is
- 3' E93 09/2005 to 02/2010
- 335i
- 3' E93 LCI 07/2009 to 10/2013
- 335is
Z Series
- Z4 E89 01/2008 to 08/2016
- Z4 35i and Z4 35is
For the Bank 1 front O2 sensor, please see the Genuine BMW E60 E82 E90 F10 1400mm Front Lambda Probe, O2 Sensor, suitable for models including 130i, 335i, 530i and Z4 35i.
Fitting and support
Professional fitting available at Nforcd in Warwickshire. Contact us for a quote: Sales@nforcd.com. Many owners choose to replace both front pre-cat lambda sensors together for balanced readings left and right.
Compatibility check
We run a compatibility check before dispatch to make sure this part suits your vehicle. Provide your UK registration number or the last 7 digits of your VIN at checkout.
Warranty
Two years manufacturer warranty for UK customers and one year manufacturer warranty for international customers when a VIN is provided at checkout on compatible vehicles.