Mercedes W205 Diesel AdBlue Additive SCR Fuel Tank Reservoir A2054706901

Mercedes W205 Diesel AdBlue Additive SCR Fuel Tank Reservoir is a specialized exhaust gas treatment system component designed for diesel vehicles. The offered reservoir, classified under the Fuel tanks and filler pipes category, ensures proper storage of the AdBlue solution and its stable integration with the SCR system, which translates into efficient compliance with emission standards. This is a solution for users who expect a technically matched component for their Mercedes.

Specifications and technical data

• SKU: A2054706901-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2054706901
• Substitutable numbers: 0444040005, 0 444 040 005, A2054706901, A 205 470 69 01, F01C250142
• Fuel type: Diesel
• Category: Fuel Tanks & Filler Necks

Purpose and role in the SCR system

The presented AdBlue additive reservoir is dedicated to Mercedes W205 class models with a diesel engine, equipped with a Selective Catalytic Reduction (SCR) system. Its task is to safely store AdBlue fluid and ensure stable supply to the dosing system, which enables effective reduction of nitrogen oxide emissions. Thanks to a design developed for a specific vehicle platform, this component works with the factory fuel and emission installation, maintaining the correct mounting geometry and hose routing.

As a part from the Fuel tanks and filler pipes group, this component is an essential link in the entire fuel supply and exhaust treatment system in modern Mercedes diesel units. A correctly selected AdBlue additive reservoir reduces the risk of engine control unit errors related to improper pressure or fluid levels, and also helps maintain stable SCR system operating parameters in the long term.

Compatibility, markings, and OEM selection

The offered reservoir has been designed as a component compliant with Mercedes factory standards, which facilitates its identification via the OEM part number and available interchangeable numbers. Selection based on these markings allows for verifying compatibility with a specific body and engine version, minimizing the risk of purchasing an incompatible component. In practice, this means the possibility of direct installation in place of a damaged or worn reservoir without the need for installation modifications.

For users and workshops, it is particularly important that the Mercedes W205 Diesel AdBlue additive reservoir belongs to a specialized group of elements where precise fitment to the fuel and emission system is crucial. Proper selection based on OEM and reference markings supports correct cooperation with the vehicle's electronics, level sensors, and lines supplying fluid to the dosing module.

Performance characteristics and installation

The product is intended for vehicles powered by Diesel fuel that use an SCR system with AdBlue additive. The reservoir construction is prepared for operation in conditions typical for a passenger car chassis – taking into account variable temperatures, vibrations, and operational loads. Thanks to this, it can stably work with factory brackets, hoses, and sensors, maintaining tightness and proper fluid circulation.

The item is offered in a used condition, which is a beneficial solution for users looking for a technically sound yet economical component. In practice, this allows for restoring the proper operation of the AdBlue system in a Mercedes W205 without the need to invest in a new subassembly, while maintaining the functionality required by the vehicle's fuel and emission system.

Benefits of using a dedicated AdBlue reservoir

Using a dedicated AdBlue additive reservoir in a Mercedes W205 Diesel brings a number of practical benefits:

• maintaining compatibility with the factory SCR system and fuel/emission installation,
• reducing the risk of engine control unit errors related to AdBlue fluid level or flow,
• possibility of installation in place of the original element without interfering with the vehicle's construction,
• support for maintaining emission standards provided for a given engine version.

For workshops and users, this means more efficient diagnostics and faster execution of repairs related to the SCR system, as well as greater predictability of the entire fuel system operation in Mercedes cars with diesel engines.

Related system components and additional materials

If you are planning a comprehensive repair or upgrade of the fuel supply and fluid storage area in your Mercedes and need other elements from the same group, such as additional reservoirs, supply lines, or filler elements, check the available parts in the Mercedes Fuel tanks and filler pipes category.

For a better understanding of the entire fuel system operation and the dependencies between the reservoir, pumps, and injectors, it is worth checking out the guide describing the diagnostics and maintenance of these subassemblies – you will find it in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

If you also pay attention to environmental and economic aspects when choosing parts, the guide on using dismantled parts may also be helpful, available at the link Circular economy in your garage – how choosing used parts from dismantling really supports environmental protection and your wallet?.