Mercedes W205 X253 W447 W906 OM651 Lambda Oxygen Nox Sensor A0009050608

Mercedes W205 X253 W447 W906 OM651 Lambda Oxygen Nox Sensor is an original component from the Lambda probes and O2 sensors group, designed for precise exhaust gas composition monitoring in Mercedes vehicles equipped with the OM651 engine. This used NOx/lambda sensor ensures the proper operation of the exhaust system and engine control, maintaining stable engine performance parameters.

Specifications and technical data

• SKU: A0009050608-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0009050608
• Substitutable numbers: A0009050608, A 000 905 06 08, 0281007099, 0 281 007 099
• Category: Oxygen Sensors

Purpose and function of the NOx/lambda sensor

The presented NOx/lambda oxygen sensor works with the engine control system in Mercedes W205, X253, W447, and W906 class vehicles with the OM651 unit. Its task is to continuously measure oxygen and nitrogen oxide content in the exhaust gases, which allows the engine control unit to adjust the fuel dosage and the operation of exhaust gas treatment systems. As a result, the powertrain maintains appropriate emission parameters and stable operating characteristics.

A functional NOx/lambda sensor is crucial for the proper operation of the injection system, particulate filter, and catalytic converter, as well as for reducing the risk of the engine entering limp mode. Replacing a worn-out part with an original Mercedes component allows for the restoration of correct readings and minimizes the risk of error codes stored in the controller's memory.

Benefits of using an original Mercedes sensor

Using an original sensor from the Lambda probes and O2 sensors group ensures a proper fit for the electrical installation and exhaust system of a given model. The appropriate measurement characteristics and compatibility with the engine control software translate into:

• stable engine operation across the full load range,
• correct regulation of the air-fuel mixture,
• maintenance of exhaust gas treatment system efficiency,
• reduced risk of warning lights appearing on the dashboard.

A used OEM component is a solution that combines cost-effectiveness with the preservation of proper build quality and compatibility with the factory vehicle installation.

Product characteristics and fitment

The offered NOx/lambda sensor is intended for Mercedes vehicles equipped with the OM651 engine and corresponding exhaust system variants. This component works with the factory engine controller, utilizing dedicated software and measurement characteristics specified by the manufacturer.

Thanks to the assignment to a specific OEM reference and the existence of interchangeable numbers, the sensor can be precisely selected for a specific car configuration. Before purchasing, it is recommended to verify compatibility by part number or based on vehicle data to ensure full compatibility with the specific model version.

Condition and practical application

The product is offered as a used item, meaning it comes from disassembly and has been verified for further serviceability. This type of solution is often chosen for exhaust system and engine control repairs when the priority is to reduce costs while maintaining the original part specification.

Replacing the NOx/lambda sensor is recommended in the event of errors related to exhaust gas composition measurement, problems with particulate filter regeneration, or unstable engine operation. Installing an original component allows for the restoration of correct measurement values and facilitates the diagnosis of any further faults.

Support with selection and additional information

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

When selecting a used oxygen or NOx sensor, it is worth paying attention to the compatibility of markings, hardware and software versions, and the mounting method. A detailed discussion of these issues, along with practical tips on selection by OEM number and VIN, can be found in the guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?