Oxygen Sensor For BMW 120i, 5-Wire Lambda Sensor Compatible With BMW Engine Management
BMW 120i Oxygen Sensor, 5-Wire Lambda Sensor, OE Replacement is a direct OE-equivalent oxygen sensor designed to restore precise air-fuel monitoring in BMW vehicles. Built by WEIDA AUTO PARTS, this 5‑wire lambda sensor delivers accurate readings that your engine control unit (ECU) relies on to optimize performance, fuel efficiency, and emissions. The sensor is designed to match OEM spec 11787512985, ensuring a reliable fit and dependable operation across a range of BMW models, including E90, E65, E66, E87, E91 and the 120i. With magnetic induction sensing and a heating element, it responds quickly to changing exhaust conditions, helping your engine run smoothly from cold start to normal cruising.
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Benefits & Tips
- Restores accurate oxygen sensing for optimal air-fuel ratio, improving fuel economy and reducing exhaust emissions on BMW E90, E65, E66, E87, E91, and 120i.
- 5‑wire design provides stable readings and reliable heater operation, resulting in quicker sensor warm-up and faster ECU adaptation after replacement.
- Install as a direct OE replacement to maintain compatibility with your vehicle’s ECU mapping and exhaust system—no guesswork on fitment.
Product specifications
- Brand: WEIDA AUTO PARTS
- Product: Oxygen Sensor, 5-Wire Lambda Sensor, OE Replacement
- OEM Number: 11787512985
- Sensor Type: Magnetic Induction
- Wiring: 5-Wire
- Heating Type: Heating
- Compatible Vehicles: BMW E90, E65, E66, E87, E91, and 120i
- Origin: Mainland China
- Measuring Range: For BMW E90, E65, E66, E87, E91, 120i
Package includes:
- 1x Oxygen Sensor (5-Wire Lambda Sensor, OE Replacement)
Warnings / Reminders
- Verify compatibility with your vehicle’s VIN and OEM part number 11787512985 before purchasing.
- Professional installation is recommended to ensure proper fit and seal integrity.
- Inspect the sensor upon receipt; do not install if damaged or visibly defective.