Volkswagen Golf VII Exhaust NOX Lambda Oxygen Sensor 04L907805DG

Volkswagen Golf VII Exhaust NOX Lambda Oxygen Sensor is a precision exhaust system component designed for diesel engines, supporting proper exhaust gas composition control and engine performance. As part of the Lambda sensors and O2 sensors group, it is responsible for the accurate measurement of oxygen and nitrogen oxide content in exhaust gases, which directly impacts the refinement of the diesel engine and emission levels. This solution helps maintain stable operating parameters for the injection system and exhaust gas aftertreatment systems.

Specifications and technical data

• SKU: 04L907805DG
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 04L907805DG
• Substitutable numbers: 04L907805DG, 04L 907 805 DG, 0281007335, 0 281 007 335
• Fuel type: Diesel
• Category: Oxygen Sensors

Purpose and function in the exhaust system

The offered NOX oxygen sensor is dedicated to Volkswagen vehicles with a Diesel engine, including the popular Golf VII model. This component works with the engine control electronics, providing accurate information about exhaust gas composition, which enables:

• precise control of fuel dosage and injection system operation,
• proper functioning of emission reduction systems,
• maintenance of stable engine operating parameters under various load conditions.

As a result, the sensor supports maintaining the right balance between performance and fuel economy, which is particularly important in modern diesel units.

Benefits of using a lambda sensor / NOX sensor

A functional NOX oxygen sensor from the Lambda sensors and O2 sensors group is crucial for the proper operation of the powertrain. Its use translates into a number of practical benefits:

• reducing the risk of the engine entering limp mode caused by exhaust gas composition measurement errors,
• stable engine operation during both cold and warm starts,
• more predictable throttle response,
• support for maintaining compliance with emission standards.

In diesel vehicles, the NOX sensor plays a particularly important role in controlling combustion processes and exhaust aftertreatment systems, which is why its proper operation has a direct impact on vehicle maintenance.

Product characteristics and fitment

The presented item is an original component from the family of measurement electronics used in Volkswagen exhaust systems. As a part marked with a dedicated OEM part number and having interchangeable numbers, it allows for precise fitment to a specific vehicle configuration. This ensures that the sensor will work with the factory engine controller and electrical installation without the need for wiring or software modifications.

The product comes from the Volkswagen OE segment, which means it maintains factory manufacturing standards and operating parameters. This is especially important for components responsible for measuring and transmitting data to the engine controller, where signal stability and resistance to exhaust system operating conditions are essential.

Condition, origin, and practical application

The sensor is offered as a used component, which allows for an economical and technically sound repair of the exhaust system in diesel cars. Such components, when properly selected and installed, can effectively restore the correct operation of the emission control system and eliminate errors stored in the controller's memory.

In practice, installation involves replacing the existing sensor with a functional equivalent, while maintaining the correct tightening torque and connection tightness in the exhaust system. After installation, it is recommended to perform a computer diagnostic to clear errors and verify the sensor's operating parameters in real-time.

Technical support and selection by numbers

To make it as easy as possible to select the right sensor for a specific vehicle, it is worth using identifiers such as SKU, OEM part number, and available interchangeable numbers. This allows you to verify compatibility with a given engine and vehicle year, as well as avoid problems with improper system operation after installation.

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

More practical information on how to consciously choose used modules and sensors can be found in the guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?