Mercedes Citan W415 109 CDI NOx Sensor 1.5 Diesel OM608 227903290R

The Mercedes Citan W415 109 CDI NOx Sensor 1.5 Diesel OM608 is an original exhaust system component from the lambda sensors and O2 sensors category, designed for precise monitoring of nitrogen oxide levels in exhaust gases. Thanks to its factory origin from the Mercedes brand, it ensures proper compatibility with the 1.5 Diesel OM608 engine and the engine control unit, which translates to stable operation of the exhaust gas purification system and correct emission values.

Specifications and technical data

• SKU: A4159057900
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4159057900
• Substitutable numbers: A4159057900, A 415 905 79 00, 227903290R, 22790 3290R
• Category: Oxygen Sensors

Purpose and Function of the NOx Sensor in Mercedes Citan W415 109 CDI

The NOx sensor in the Citan W415 109 CDI model is responsible for measuring the concentration of nitrogen oxides in the exhaust stream, which is crucial for the proper functioning of the emission reduction system. A correctly functioning component allows the engine control unit to:

• accurately dose the reducing agent in the exhaust gas purification system,
• maintain compliance with emission standards for the 1.5 Diesel OM608 engine,
• ensure stable engine operation without power loss or emergency mode,
• reduce the risk of emission-related errors appearing in the control unit's memory.

Advantages of an Original NOx Sensor from the Lambda Sensors and O2 Sensors Category

The offered component comes from the line of parts intended for Mercedes vehicles, which means maintaining factory operating parameters. Using an original NOx sensor in the Citan W415 109 CDI ensures:

• full compatibility with the engine control unit software used in the 1.5 Diesel OM608 engine,
• appropriate mechanical and electrical fit for the vehicle's installation,
• consistency with the factory exhaust system control strategy,
• reduced risk of adaptation issues compared to non-OE replacements.

This allows the sensor to meet the requirements of users who expect stable, predictable operation of the exhaust emission system and easier service diagnostics.

Product Characteristics and Condition

The presented NOx sensor is a part from the lambda sensors and O2 sensors group, sourced from a dismantled vehicle. The used condition means that the component has been previously operated but retains functionality allowing for further use after installation in another car. This type of solution is particularly attractive for users who:

• are looking for a technically sound component at a more favorable price than a new one,
• want to maintain the vehicle in a configuration close to the factory original,
• prefer parts from the original Mercedes production line.

Selection by Numbers and Compatibility

The NOx sensor has a dedicated OEM part number and associated interchangeable numbers, which facilitates verification of compatibility with a specific version of the Citan W415 109 CDI. When selecting, it is recommended to use manufacturer catalogs or verify by VIN to confirm that the sensor's electrical and communication parameters match the engine control unit installed in the vehicle.

If you are interested in other Mercedes lambda sensors and O2 sensors, check out our dedicated offer: Mercedes lambda sensors and O2 sensors.

Why Choose a Used NOx Sensor?

For components like NOx sensors, choosing a used component can be a sensible alternative to a new part, especially if you want to maintain the vehicle's original specifications. It is worth familiarizing yourself with practical tips on selecting and installing electronics and sensors in a car – you will find them in the guide: Used car electronics on board – why choose second-hand ECU modules and sensors?

If you want to learn more about the aftermarket and dispel doubts related to the use of used components, the article will also be helpful: Used car parts: Myths and facts you need to know.

Summary

The Mercedes Citan W415 109 CDI NOx Sensor 1.5 Diesel OM608 is a factory exhaust system component from the lambda sensors and O2 sensors group, designed to work with the 1.5 Diesel OM608 diesel engine. Choosing an original, used sensor allows for maintaining the proper operating parameters of the engine, reducing the risk of emission errors, and keeping the vehicle in a configuration consistent with the manufacturer's intentions.