Genuine BMW Rear O2 Oxygen Lambda Sensor - Bank 2 Downstream (Post-Cat, 490mm) for E81 E82 E87 E88 E90 E91 E92 E93 E84 E89 E83 E70 | 11787545075 | Fits 130i 135i 328i 335i X1 28iX Z4 35i

BMW Original Equipment Rear After-Catalyst Emissions Probe - Bank Two - 490 mm Lead - Part Number 11787545075

Restore crisp drivability, stable fuel trims and clean MOT emissions with this BMW OE exhaust gas oxygen probe positioned after the catalytic converter on the second cylinder bank. This exact-match unit features the correct 490 mm harness for tidy routing and a direct-fit plug for a quick, reliable install on the listed BMW 1 Series, 3 Series, X models and Z4 applications.

We run these sensors on our own cars and for customer builds at MJ Modifications, and the feedback is consistently excellent. Expect smooth idle, consistent AFR feedback and long-term reliability from genuine BMW hardware that is calibrated precisely for your vehicle.

Why this OEM rear emissions probe is the right choice

• BMW original equipment for perfect fitment and factory-spec calibration
• Secondary unit for the second cylinder bank, positioned after the catalyst
• 490 mm lead for the correct routing and strain relief in the OE loom path
• Plug-in connector for a clean, plug-and-play installation
• Helps resolve ageing-probe drift, lambda-related emissions fails and poor mpg
• Ideal when dealing with rear-sensor fault codes or readiness monitor issues
• Built to work exactly as BMW intended for dependable closed-loop control

Vehicle applications

Suitable when a rear after-cat sensor is required on Bank Two for the following platforms and trims:

• 1 Series - E81, E82, E87, E88 including 125i, 128i, 130i, 135i, 1M
• 3 Series - E90, E91, E92, E93 including 323i, 325i, 328i, 330i, 335i, 335is, xi and xDrive variants
• X1 - E84 including 25iX, 28iX
• X3 - E83 LCI including 2.5si, 3.0i, 3.0si
• X5 - E70 including 3.0si
• Z4 - E89 including 23i, 30i, 35i, 35is

Chassis references covered include E81, E82, E87, E88, E90, E91, E92, E93, E84, E83, E70 and E89. If you need the Bank One rear variant with the longer lead, we also stock the 560 mm version in a separate listing.

Key details

• Location: rear after-catalyst probe on Bank Two
• Cable length: 490 mm
• Type: BMW OE exhaust oxygen probe lambda sensor
• Part number: 11787545075
• Manufacturer: BMW

Fitment confirmation

We will verify compatibility before dispatch. Add your UK registration or the last 7 of your VIN at checkout so we can ensure this is the correct rear Bank Two sensor for your car.

Professional installation

Prefer us to fit it for you? Book expert installation with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Warranty

BMW manufacturer warranty applies. Two years for UK customers and one year for international orders when a VIN is provided at checkout on compatible vehicles.

Search-friendly terms

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