Mercedes W204 C204 W212 V212 DPF Exhaust Pressure Sensor Hose Pipe A2124922059

Mercedes W204 C204 W212 V212 DPF Exhaust Pressure Sensor Hose Pipe is an original exhaust system component designed to work with the particulate filter pressure sensor in selected Mercedes C-Class and E-Class models. Thanks to its factory-fit design, the hose ensures stable pressure signal transmission and proper DPF control operation, which translates into efficient filter regeneration and accurate diagnostics. This is a solution for users who expect compatibility with the factory installation without the need for modifications.

Specifications and technical data

• SKU: A2124922059
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2124922059
• Substitutable numbers: A2124922059, A 212 492 20 59
• Category: Other Car Parts & Accessories

Purpose and function of the DPF pressure sensor hose

The offered hose is a component connecting the pressure sensor to the exhaust system in Mercedes W204, C204, W212, and V212 series vehicles equipped with a particulate filter. Its task is to transmit the pressure difference before and after the DPF filter to the sensor, and subsequently to the engine control unit. A properly functioning hose allows for:

• reliable reading of the particulate filter load,
• efficient initiation of the DPF regeneration process,
• reduction of the risk of the engine entering limp mode due to pressure errors,
• maintenance of stable engine operating parameters.

Thanks to its factory geometry, the hose is perfectly matched to the routing of the installation in the engine bay, which facilitates assembly and minimizes the risk of improper positioning near hot exhaust system components.

Compatibility with Mercedes W204, C204, W212, V212 models

The hose has been designed specifically for Mercedes C-Class and E-Class platforms that use a particulate filter controlled by a pressure sensor. Proper fitment for these body generations means:

• preservation of the original hose routing in the engine bay,
• correct positioning relative to the sensor and the ports in the exhaust system,
• no need for adapters or installation modifications.

Such a solution is particularly beneficial when servicing vehicles where maintaining compliance with factory technical documentation and ease of subsequent diagnostics is important.

Component characteristics and advantages of using an original part

As a Mercedes group component, the DPF pressure sensor hose maintains the parameters specified by the vehicle manufacturer. In practice, this means:

• adequate resistance to temperature and operating conditions in the engine bay,
• maintenance of pressure measurement system tightness,
• stable material properties over a long service life.

Compared to universal aftermarket replacements, the original hose ensures predictable behavior over time, which is essential for the proper operation of the exhaust gas cleaning system and reducing the risk of DPF-related errors.

Product condition and service application

The offered item is a used product, which allows for an economical repair of the DPF system while maintaining the original manufacturer's specifications. This type of solution is often chosen in situations where:

• the existing hose has suffered mechanical or thermal damage,
• there are pressure sensor errors caused by hose leaks,
• a quick replacement of the component is necessary without waiting for new parts.

Using an original hose in good technical condition helps restore the proper operation of the DPF pressure measurement system and reduces service costs compared to a complete replacement of the sensor or other sub-assemblies.

Service expansion and related Mercedes components

If you are planning a comprehensive repair or upgrade of the exhaust system and DPF control area in your Mercedes and need other components from the same group, such as additional measurement hoses, sensor mounts, or engine bay installation elements, check out the available parts in the Other Mercedes category.

For users interested in comparing the characteristics of sports versions of vehicles with standard variants, including differences in exhaust and braking systems, the article Audi RS vs other models – what is hidden under the hood and chassis? may be helpful, as it shows how manufacturers modify key components in more demanding designs.

If you are considering the choice between new and used DPF system components and want to better evaluate the cost-to-durability ratio, it is worth reading the guide New or used? A comparison of costs and quality of car parts, which discusses the practical aspects of selecting OEM parts in vehicle service.