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

NOx Sensor BMW E81 E87 LCI E90 E91 E92 E93 Oxygen Sensor Petrol N43 is a component from the Lambda sensors and O2 sensors category, designed for use in BMW petrol engines from the N43 family. It is responsible for the precise measurement of nitrogen oxides in exhaust gases, supporting the engine control unit in maintaining stable operating parameters and compliance with emission standards.

Specifications and technical data

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

Purpose and role in the exhaust system

The NOx sensor is dedicated to BMW 1 and 3 series E-generation models with the N43 petrol engine, where it works in conjunction with the exhaust gas treatment system. Its task is to continuously monitor the exhaust gas composition, which allows the engine control unit to adjust the fuel dosage and exhaust system operating strategy. As a result, the engine maintains stable performance, and the emission of harmful compounds remains at the level specified by the manufacturer.

A properly functioning NOx sensor reduces the risk of the engine entering limp mode, the check engine light appearing, and excessive fuel consumption. This is particularly important in modern petrol units with direct injection, where the precision of exhaust gas composition measurement has a direct impact on the durability of exhaust system components.

Benefits of using an original NOx sensor

Choosing an original NOx sensor designed for specific BMW models ensures:

• proper cooperation with the factory engine control unit software,
• stable operating parameters across the full range of loads and temperatures,
• reduced risk of diagnostic errors related to exhaust emissions,
• maintenance of factory performance and operating characteristics of the N43 unit.

Thanks to its adaptation to the petrol fuel system, the sensor operates under conditions specified by the manufacturer, which translates into predictable vehicle behavior and easier diagnostics of potential faults.

Product characteristics and condition

The offered NOx sensor is a dismantled component, which allows for an economical repair of the exhaust system while maintaining the original specification. A used component of this type is often chosen as a reasonable alternative to new parts, especially in the case of advanced measurement electronics, where matching the specific vehicle configuration is crucial.

Due to the nature of the product, a standard diagnostic procedure and verification of correct operation after installation using an appropriate diagnostic tester are recommended before mounting. This allows for confirming proper communication with the control unit and the absence of active errors related to the exhaust emission system.

Selection by numbers and compatibility

NOx sensors in modern BMWs are closely linked to the engine control unit software, which is why it is worth using the OEM number and interchangeable numbers when selecting parts. This facilitates finding a component compatible with the specific N43 engine version and equipment configuration. In case of doubt, a good solution is verification by VIN number or consultation with a diagnostician, which minimizes the risk of purchasing an unsuitable component.

If you want to better understand how to safely choose used modules and sensors, how to check hardware and software compatibility, and what to pay attention to during installation, check out our guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?

Support for expanding the BMW exhaust measurement system

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 additional oxygen sensors, control probes, or diagnostic probes, check the available parts in the BMW Lambda sensors and O2 sensors category.