Genuine BMW Rear Oxygen O2 Lambda Sensor, Bank 1 (Downstream/Post‑Cat), 560mm Lead E82 E84 E89 E90 Part 11787545074 Fits 130i 335i X1 28iX Z4 35i

OEM BMW Rear Lambda Probe Bank 1, 560 mm Cable, Part Number 11787545074

Restore crisp throttle response, consistent MPG and clean emissions with this original BMW rear lambda probe for Bank 1, cable length 560 mm, part number 11787545074. This is the after-catalyst exhaust gas sensor that the ECU uses to assess catalyst efficiency and fine tune fuelling. Genuine factory component, exact fit and calibration for E8x 1 Series, E9x 3 Series, E84 X1, E83 LCI X3, E70 X5 and E89 Z4 applications listed below.

Why this OEM sensor is the right choice

• Original BMW part for perfect fitment and durability
• Correct rear position for Bank 1 with 560 mm harness for a tidy, stress-free install
• Factory connector and sealing for plug-in replacement, no splicing
• Accurate AFR feedback for stable idle, smooth drivability and optimal fuel economy
• Helps extinguish emissions warning lights related to rear probe performance and catalyst monitoring
• Proven in our workshop and on customer vehicles with consistently positive results

Also known as

Rear oxygen monitor, after-cat O2, post catalyst lambda probe, exhaust gas sensor Bank 1, downstream AFR sensor, rear lambda BMW OE 11787545074.

When replacement is recommended

• Increased fuel consumption or sulphur smell from the exhaust
• Intermittent idle wobble or hesitant part-throttle response
• Dashboard emissions light on, catalyst efficiency or rear O2 related fault codes
• Pre-MOT preparation to ensure compliant emissions

Product details

• Location: Rear probe, Bank 1, after catalytic converter
• Cable length: 560 mm
• Part number: 11787545074
• Manufacturer: BMW

Vehicle compatibility

Fits the following BMW models where a rear Bank 1 after-cat sensor is specified. If unsure, use our fitment check and we will confirm before dispatch.

1 Series

• E81 130i
• E87 130i
• E87 LCI 130i
• E88 125i, 128i, 135i
• E82 125i, 128i, 135i, 1M

3 Series

• E90 323i, 325i, 325xi, 328i, 328xi, 330i, 330xi, 335i, 335xi
• E90 LCI 323i, 325i, 325xi, 328i, 328xi, 330i, 335i, 335xi
• E91 323i, 325i, 325xi, 328i, 328xi, 330i, 330xi, 335i, 335xi
• E91 LCI 323i, 325i, 328i, 328xi, 330i, 335i, 335xi
• E92 323i, 325i, 325xi, 328i, 328xi, 330i, 330xi, 335i, 335xi
• E92 LCI 323i, 325i, 325xi, 328i, 328xi, 330i, 335is
• E93 323i, 325i, 328i, 330i, 335i
• E93 LCI 323i, 325i, 328i, 330i, 335is

X Models

• E84 X1 25i xDrive, 28i xDrive
• E83 LCI X3 2.5si, 3.0i, 3.0si
• E70 X5 3.0si

Z4

• E89 Z4 23i, 30i, 35i, 35is

Fitment check

We verify compatibility prior to shipping. Add your UK registration or the last 7 of your VIN at checkout and we will confirm this part suits your exact car.

Professional installation

Want it fitted for you? MJ Modifications offers installation at our Warwickshire workshop. Request a quote at info@mjmodifications.co.uk.

Warranty

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

Need the other side

If you require the opposite rear probe for Bank 2, look for the 490 mm version for the same platforms.

Search helper keywords

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