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

Lambda Oxygen Sensor BMW E81 E87 LCI E90 E91 E92 E93 Petrol N43 NOx is an original BMW component designed for petrol systems in popular 1 and 3 series models. As a precise exhaust gas and nitrogen oxide sensor, it supports the proper operation of the N43 engine, maintains a stable air-fuel mixture, and ensures the efficient functioning of the exhaust emission control system.

Specifications and technical data

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

Purpose and function in the exhaust system

The lambda probe and NOx sensor in the N43 petrol engine are responsible for real-time measurement of exhaust gas composition and nitrogen oxide content, which allows the engine control unit to precisely adjust the fuel dosage. In BMW E81, E87 LCI, E90, E91, E92, and E93 models, this component is crucial for:

• maintaining the correct mixture composition across the entire load range,
• efficient operation of the catalytic converter and emission reduction system,
• reducing fuel consumption while maintaining appropriate dynamics,
• reducing diagnostic errors related to exhaust emissions.

By using a dedicated NOx sensor, the engine control unit can more accurately control the combustion process, which translates into more stable engine operation and consistent driving parameters.

Benefits of using an original BMW component

For such a sensitive component as a lambda probe with a NOx sensor, it is particularly important to maintain full compliance with factory specifications. The original BMW component ensures:

• proper cooperation with the N43 engine control unit software,
• appropriate measurement characteristics across the entire operating temperature range,
• stable output signals, facilitating diagnostics and ECU adaptation,
• preservation of factory exhaust emission parameters for the specific model version.

The product belongs to the Lambda probes and O2 sensors group, which means it has been designed to operate in the harsh thermal and chemical conditions of the exhaust system while maintaining adequate operational durability.

Technical characteristics and compatibility

The presented sensor is designed for petrol engines where the control system requires precise measurement of oxygen and nitrogen oxide content in the exhaust gases. Using the correct component in the exhaust system allows you to:

• reduce the risk of the engine entering limp mode due to incorrect readings,
• maintain correct operation of mixture adaptation and long-term fuel trims,
• ensure compliance with emission standards intended for the specific BMW version.

To ensure correct selection, it is worth comparing the markings with the existing component and using the available replacement numbers in the technical specification – this helps avoid compatibility issues in a specific equipment variant.

Product condition and service application

The item is offered in used condition, which in practice means the possibility of an economical repair of the exhaust system while maintaining the original BMW manufacturing quality. This type of solution is particularly beneficial when:

• a quick replacement of a damaged sensor is necessary without waiting a long time for a new part,
• service cost optimization is a priority while maintaining OEM parts,
• the vehicle requires restoring the correct operation of the emission system after errors related to the lambda probe or NOx sensor appear.

Before installation, standard exhaust system diagnostics and an inspection of the electrical wiring are recommended to rule out other causes of improper engine operation.

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

More about used electronics and sensors in cars

When selecting used measurement and electronic components, it is worth knowing the basic principles of selection and diagnostics. Practical tips on choosing controllers, modules, and sensors can be found in the article: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?.