BMW E81 E87 LCI E90 E91 E92 E93 Nox Sensor Petrol N43 7587130

Visual condition of the part

The product shows signs of use visible in the photos.

BMW E81 E87 LCI E90 E91 E92 E93 Nox Sensor Petrol N43 is an original exhaust system component from the Lambda sensors and O2 sensors category, designed for N43 petrol engines. It enables precise measurement of nitrogen oxides, supporting the proper operation of the engine control unit and stable compliance with emission standards. This is a practical solution for BMW users who want to restore the correct operation of the exhaust treatment system without investing in a new part.

Specifications and technical data

• SKU: 7587130-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7587130
• 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, which allows the engine control unit to properly adjust the mixture composition and the operation of the injection system. A properly functioning component of this type:

• stabilizes the operation of the power unit under various load conditions,
• reduces the risk of the engine entering limp mode,
• supports compliance with exhaust emission requirements,
• facilitates diagnostics and eliminates errors related to the exhaust system.

For BMW 1 Series and 3 Series models with the N43 engine, using the correct NOx sensor is crucial for maintaining proper engine performance and predictable throttle response.

Benefits of using an original BMW sensor

Choosing an original BMW NOx sensor from the Lambda sensors and O2 sensors category primarily ensures structural and electrical compatibility with the specific power unit. This means:

• factory measurement characteristics, in accordance with the manufacturer's specifications,
• proper cooperation with the engine control unit software,
• no need for modifications to the installation or wiring harness,
• preservation of original diagnostic logic and readings in service testers.

As a result, the installation process is straightforward, and the risk of compatibility issues is minimized. This is particularly important for electronic components that directly affect engine performance parameters.

Technical characteristics and compatibility

The presented NOx sensor is designed for petrol engines, which is important when selecting parts within the BMW range, where solutions for diesel units also exist. The component works with the engine control system continuously, transmitting data on exhaust gas composition in real time.

The selection of the correct reference should be based on the manufacturer's markings and vehicle data (model, year, engine type). Using the appropriate NOx sensor helps avoid problems with controller errors, uneven engine operation, or excessive fuel consumption. This solution is especially recommended for professional exhaust system repairs in BMW vehicles with the N43 engine.

Component condition and practical application

The offered NOx sensor is a used part, which represents a reasonable compromise between repair cost and functionality. For many BMW users, this is a way to restore the correct operation of the emission control system without the need to purchase a brand-new part. Such components are often chosen in situations where the existing sensor generates errors, causes dashboard warning lights to illuminate, or forces the engine into limp mode.

Before installation, standard exhaust system diagnostics and verification of the electrical installation are recommended to ensure that replacing the sensor is the correct response to the recorded errors. A correctly selected and installed component allows for the restoration of stable engine operating parameters and proper cooperation with the catalytic converter.

Technical support and additional information

In the case of electronic powertrain components, such as NOx sensors, it is particularly important to have an informed approach to part selection, hardware and software compatibility, and the installation process itself. Practical tips on choosing used modules and sensors, including principles of selection based on manufacturer markings and example repair scenarios, can be found in the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?

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