BMW E81 E87 LCI E90 E91 E92 NOx Sensor Petrol N43 7580517 7587127

Visual condition of the part

The product shows signs of use visible in the photos.

BMW E81 E87 LCI E90 E91 E92 NOx Sensor Petrol N43 is an original exhaust emission control component, belonging to the Lambda sensors and O2 sensors category. Designed by BMW to work with N43 petrol engines, it ensures precise measurement of nitrogen oxides, supporting proper engine control unit operation and compliance with emission standards.

Specifications and technical data

• SKU: 7580517-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7580517
• Substitutable numbers: 11787587130, 7587130, 11787587127, 11787582326, 11787580517, 11787576907, 11787571263, 7587127, 7582326, 7580517, 7576907, 7571263
• Fuel type: Petrol
• Category: Oxygen Sensors

Purpose and function of the NOx sensor

The NOx sensor in the N43 petrol engine is responsible for monitoring the nitrogen oxide content in the exhaust gases and transmitting this data to the engine control unit. Based on this, the ECU corrects the mixture composition, injection strategy, and exhaust treatment system operation, which helps maintain stable engine performance parameters and reduce fuel consumption.

In BMW E81, E87 LCI, E90, E91, and E92 vehicles with the N43 engine, the use of a dedicated NOx sensor is crucial for maintaining the correct operation of the injection system, avoiding errors in the control unit memory, and passing periodic technical inspections related to exhaust emissions.

Benefits of using an original BMW sensor

Using an original BMW NOx sensor instead of a worn-out component allows for restoring proper communication with the ECU and stable mixture regulation. In practice, this translates into:

• smoother engine operation across the entire rev range,
• reduced risk of the engine entering limp mode,
• better exhaust emission control and compliance with factory settings,
• reduction in errors related to the combustion system and catalytic converter.

For users who want to maintain the factory driving characteristics and refinement of the N43 unit, choosing an original BMW NOx sensor is a technically safe and predictable solution.

Technical characteristics and integration with the petrol system

The presented NOx sensor is designed for engines with fuel type: petrol, which means its measurement characteristics, operating range, and communication method have been adapted to the specifics of N43 petrol units. It integrates with the exhaust system and the vehicle's electrical installation in accordance with the factory BMW design, without the need for modifying wiring harnesses or the control unit.

Thanks to the presence of dedicated part numbers and interchangeable numbers, the sensor can be matched to a specific vehicle configuration based on catalog data or the VIN, which minimizes the risk of selecting the wrong component.

Condition, application, and selection by numbers

The offered item comes from the group of original BMW components and is classified as a used NOx sensor. This type of part is particularly attractive for users who are looking for a solution that allows for reducing repair costs while maintaining the original manufacturer's specification. Proper selection is made based on the OEM part number and associated interchangeable numbers, which enables precise matching to a specific model and engine version.

To better understand how to safely choose used modules and sensors, including exhaust emission system components, it is worth reading the Global Parts guide: used automotive electronics – ECU modules and second-hand sensors. The article discusses, among other things, selection by VIN/OEM, compatibility issues, and practical installation tips.

Integration with the BMW Lambda sensors and O2 sensors category

If you are planning a comprehensive repair or upgrade of the exhaust and emission control area in your BMW and need other elements from the same group, such as additional probes, oxygen sensors, or exhaust measurement components, check the available parts in the BMW Lambda sensors and O2 sensors category.

Summary

BMW E81 E87 LCI E90 E91 E92 NOx Sensor Petrol N43 is a specialized exhaust emission system component that works with the factory engine control unit, ensuring proper mixture regulation and nitrogen oxide control. Choosing an original, used sensor with preserved BMW specifications allows for restoring the proper operation of the engine, reducing diagnostic errors, and maintaining engine performance parameters at a level close to factory standards.