Mercedes W204 W212 C207 A207 C218 NOX Sensor 5WK96681 A0009050008

Mercedes W204 W212 C207 A207 C218 NOX Sensor is an original nitrogen oxide sensor designed for selected Mercedes C-Class, E-Class, and CLS models. This component works with the exhaust system and emission control system, ensuring stable emission control and proper engine operation. Thanks to its factory origin, it is precisely matched to the electrical installation and engine control units in Mercedes vehicles.

Specifications and technical data

• SKU: A0009055100
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0009055100
• Substitutable numbers: A0009055100, A 000 905 51 00
• Category: Other Exhaust & Emission Parts

Purpose and function of the NOX sensor

The NOX sensor in Mercedes W204, W212, C207, A207, and C218 models is responsible for measuring the concentration of nitrogen oxides in the exhaust gases, which allows the engine control unit to properly dose fuel and the reducing agent in the exhaust treatment system. A properly functioning component of this type supports maintaining exhaust emission standards, reduces the risk of the engine entering limp mode, and helps maintain stable vehicle performance.

Replacing a worn or damaged sensor with an original Mercedes component allows you to restore proper cooperation with the factory controller software, without the need for modifications to the installation or engine maps.

Benefits of using an original Mercedes component

Choosing a NOX sensor from Mercedes primarily ensures compatibility with the wiring harness, connectors, and control unit logic. The original component is designed for specific models and engine versions, which translates into:

• consistent cooperation with the OBD diagnostic system and dashboard warning lights,
• stable operating parameters across a wide range of temperatures and loads,
• reduced risk of emission-related errors.

As a result, the NOX sensor can be safely used as a functional replacement for the factory-installed component in Mercedes vehicles of the corresponding body series.

Product condition and installation aspects

The offered NOX sensor is an item from the original used Mercedes parts group, which allows you to combine reasonable cost with maintaining factory specifications. This type of component is particularly attractive for maintenance repairs when you want to maintain compliance with the vehicle's equipment without having to reach for expensive new parts.

Due to its factory origin, installation is similar to replacing a part with a new one: the sensor is prepared for installation in the location provided by the manufacturer, using the original type of connector and thread in the exhaust system. After correct installation and adaptation in the control unit (if required by the specific model), it is possible to restore the proper operation of the emission control system.

Application in Mercedes vehicles

The presented NOX sensor is intended for selected body versions of the Mercedes C-Class (W204), E-Class (W212, C207, A207), and CLS (C218). In practice, this means it can be used in a wide range of vehicles where the exhaust system and engine control unit were designed to work with this type of sensor. Before purchasing, it is worth verifying compatibility with the specific engine version and model year to ensure full installation and software compatibility.

Technical support and additional information

If you are planning a comprehensive repair or upgrade of the exhaust and emission control area in your Mercedes and need other components from the same group, such as sensors, control modules, or wiring harnesses, check out the available parts in the Other Mercedes category.

To compare solutions used in sports designs of other brands and to better understand the differences in the construction of powertrains and braking systems, you can read the article Audi RS vs other models – what is hidden under the hood and chassis?, which discusses, among other things, the impact of advanced systems on the car's operating characteristics.

If you want to learn more about the advantages of using original, used components in cars of this brand, it is worth reading the post Mercedes – comfort, prestige, and durability. Why is it worth choosing original used parts?, which discusses how to maintain a high level of comfort and durability without excessive service costs.