1 / 192011–2016 BMW 520i Upstream Oxygen Sensor OEM 11787589121 Genuine BMW OEM upstream oxygen sensor (pre-catalyst) (part number 11787589121). This sensor…
Product description
2011–2016 BMW 520i Upstream Oxygen Sensor OEM 11787589121
Genuine BMW OEM upstream oxygen sensor (pre-catalyst) (part number 11787589121). This sensor monitors the oxygen content in the exhaust gases before the catalytic converter, allowing the engine management system to adjust fuel mixture for optimal performance, emissions and efficiency. If this sensor fails, you may see poor fuel economy, reduced power, rough idle or a “check engine” light; replacing it with the correct OEM part restores correct exhaust monitoring and engine control.
Details:
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VIN: WBAXG1105DDY83099
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Part Number: 11787589121 (also listed as 11-78-7-589-121)
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Function: Upstream oxygen (O₂) sensor before the catalytic converter – responsible for measuring oxygen levels in exhaust for mixture correction.
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Compatibility: Fits a variety of BMW models (including F10, F20, F30, X1, X3, Z4) across years 2011-2018.
Condition: Used OEM, tested and in good working condition
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OEM parts are built to factory specifications, ensuring the right fit, performance, and safety compared to aftermarket alternatives. We sell parts pulled from the vehicles. They are 100% compatible with original part numbers incase if you are looking to substitute part, please check with your car's part number and catalog.
⚠️ Fitment Note: Please verify compatibility with your vehicle’s VIN before purchase.
Vehicle compatibility
Verified fitment — high-confidence structured evidence
Compatibility table3 vehicles
Compatibility data comes from structured seller fitment and listing metadata. When in doubt, the OE number is the ground truth — match it against your vehicle’s parts catalog or ask our team.
Technical details
- Category
- Oxygen Sensors
- Brand
- BMW
- Manufacturer part number
- 11787589121
- Condition
- Used
- Part source
- OEM
- Position
- Front
- Placement
- Front
- Brand type
- BMW
- Country of origin
- Germany
Photos show the actual item where provided by the seller. Report inaccurate listings to our team.
