Mercedes W204 C207 S211 S212 C219 Lambda Oxygen NOX Sensor A0015424848

Mercedes W204 C207 S211 S212 C219 Lambda Oxygen NOX Sensor is an original component from the Lambda probes and O2 sensors group, designed for precise monitoring of the air-fuel mixture composition in Mercedes vehicles. This used OEM component allows for maintaining factory engine performance parameters, stable exhaust emissions, and proper cooperation with the control system.

Specifications and technical data

• SKU: A0045424818
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: 0045424818
• Substitutable numbers: 13627804369, 7804369
• Category: Oxygen Sensors

Function and application of the lambda sensor

The lambda sensor in the exhaust system is responsible for real-time measurement of oxygen content in the exhaust gases and transmitting a signal to the engine control unit. Based on this, the ECU corrects the fuel dose, which affects:

• stable operation of the power unit across the full load range,
• maintaining proper exhaust emissions in accordance with the manufacturer's specifications,
• optimization of fuel consumption in urban and extra-urban conditions,
• protection of the catalytic converter against overheating and excessive load.

Selecting the correct lambda sensor for specific body generations W204, C207, S211, S212, and C219 ensures electrical and mechanical compatibility with the factory exhaust system and wiring harness.

Benefits of using an original Mercedes component

Using an original sensor from the Lambda probes and O2 sensors group in Mercedes vehicles ensures consistency with the factory engine control unit characteristics. As a result:

• the sensor signal is correctly interpreted by the ECU without the need for adaptation,
• compliance with injection and ignition maps intended for the specific model is maintained,
• the risk of diagnostic errors and MIL light activation is minimized,
• predictable engine response to changes in load and operating temperature is maintained.

For premium class vehicles such as Mercedes, using an OEM component is particularly important for maintaining engine refinement and parameter repeatability over a long period of operation.

Product characteristics and condition

The offered lambda sensor is a Mercedes brand part sourced from dismantling, classified as used. This means that the component was previously in operation but retains functionality allowing for further use after proper installation. This type of solution is cost-effective, especially when servicing older body generations, where a reasonable balance between quality and expenditure is important.

Before installation, a standard service procedure is recommended: checking the electrical installation, verifying the socket in the exhaust system, and reading any potential errors in the engine control unit. A properly selected and installed lambda sensor helps restore correct fuel trims and reduce symptoms such as increased fuel consumption or unstable idle speed.

Support with selection and additional information

Due to differences between individual engine versions and model years, when selecting a lambda sensor for a Mercedes, it is worth using the OEM part number and interchangeable numbers visible in the technical specification. This helps avoid problems with compatibility with the electrical harness and the thread in the manifold or exhaust pipe.

If you are planning a comprehensive repair or upgrade of the exhaust system area in your Mercedes and need other components from the same group, such as additional pre-catalytic sensors, post-catalytic sensors, or O2 sensors for other engine variants, check the available parts in the Mercedes Lambda probes and O2 sensors category.

More practical tips on selecting and operating used electronics and measuring components in a car can be found in the article: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?

Summary

Mercedes W204 C207 S211 S212 C219 Lambda Oxygen NOX Sensor is an original, used component designed for operation in the exhaust system of Mercedes vehicles, belonging to the Lambda probes and O2 sensors group. A properly selected and installed sensor supports the correct operation of the engine control unit, stabilizes combustion parameters, and helps maintain exhaust emissions at the level intended by the manufacturer, representing a reasonable service solution for users who value technical consistency with the factory vehicle configuration.