Rear Air-Fuel Ratio Oxygen Lambda Sensor for BMW E87 E90 E91

Keep your BMW performing at its best with the Rear Air-Fuel Ratio Oxygen Lambda Sensor designed for BMW E87, E90, and E91 models. This downstream AFR sensor plays a critical role in reading exhaust gas composition after the catalyst, helping your engine control module (ECU) fine-tune fuel delivery for efficient combustion, smoother idle, and lower emissions. Built as a reliable replacement part, it ensures your vehicle maintains proper exhaust gas monitoring even as the original sensor ages.

Designed for a precise fit across the BMW 1 Series E87 (2003–2011) and 3 Series E90/E91 (2005–2012), this sensor number 11787547313 (along with compatible variants 7547313, 11787530318, 11787537995, 11787530287, 11787530285, 0ZA600-BM8) is a direct compatibility match for rear downstream post-cat installations. It’s offered under the IWOKPHD brand, recognized for dependable auto parts sourced for European vehicle platforms.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

Benefits & Tips

• Restore accurate AFR readings to support optimal fuel trim and emissions, especially after long-term sensor wear or catalytic converter maintenance.
• Replace a failing rear O2/Lambda sensor to improve idle stability, throttle response, and overall driveability in both city and highway conditions.
• Tip: When replacing, verify the part numbers (11787547313, 7547313, 11787530318, 11787537995, 11787530287, 11787530285, 0ZA600-BM8) to ensure compatibility with your exact BMW model and production year.

Product specifications

• Brand: IWOKPHD
• Part numbers: 11787547313, 7547313, 11787530318, 11787537995, 11787530287, 11787530285, 0ZA600-BM8
• Application: Fits BMW 1 Series E87 (2003–2011) and BMW 3 Series E90/E91 (2005–2012)
• Sensor type: Piezoelectric (Rear Downstream Post-Cat)
• Measuring/function: Air-Fuel Ratio (AFR) / Oxygen Lambda sensor
• Wiring: 4-wire AFR probe
• Origin: Mainland China
• OEM number: 11787547313
• Heater type: Heating type

Package includes:

• 1 piece

Warnings/Reminders

• Please check the picture and part number carefully to ensure you bought the right part for your car.
• If you cannot confirm which item fits your car, send the Part Number or the original product photos to us to confirm before ordering.
• The only way to be 100% sure the part will fit is to check your original component. We will verify for you and reply within 24 hours.

Language support: English is available for this product as standard documentation and support channels.

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