Mercedes W205 OM654 AdBlue Tank Reservoir Storage Pump A2054705602

AdBlue tank with pump for Mercedes W205 Diesel engine is an original component of the fluid dosing system, responsible for the correct supply of the SCR system and reduction of exhaust emissions. This solution is intended for users who want to restore the full functionality of the exhaust gas purification system while maintaining factory operating characteristics.

Specifications and technical data

• SKU: A2054705602
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2054705602
• Substitutable numbers: A2054705602, A 205 470 56 02, A0994712500, A 099 471 25 00, A3C00925700000041649
• Fuel type: Diesel
• Part type: Fuel Tank
• Category: Fuel Tanks & Filler Necks

Purpose and Function in the AdBlue System

The AdBlue tank integrated with a pump in the Mercedes C-Class W205 generation is responsible for storing the urea solution and its stable delivery to the exhaust system. A properly functioning module ensures:

• maintaining the correct fluid pressure in the AdBlue lines,
• precise dosing of the solution to the SCR catalyst,
• compliance with exhaust emission standards for diesel engines,
• stable engine operation without an emergency mode related to the AdBlue system.

This component is crucial for the correct operation of the entire exhaust gas purification system in diesel-powered vehicles, therefore its technical condition directly affects operational safety and environmental compliance.

Construction and Advantages of the Original AdBlue Tank

The offered tank belongs to the category of Fuel tanks and filler necks, however, in this case, it performs a specialized function in the AdBlue system. Using an original solution from the vehicle manufacturer means:

• factory fit for Mercedes W205 – correct mounting points and compatibility with the vehicle's installation,
• proper cooperation with the engine electronics and fluid level and temperature sensors,
• material resistance to urea solution and temperature changes,
• maintaining the original pump operating characteristics across the entire load range.

Thanks to this, installation proceeds predictably, and after replacement, it is possible to restore operating parameters close to factory settings.

Selection, Installation, and Service Application

The offered AdBlue tank with pump is a used part, allowing for economical repair of the system while maintaining the original design. This type of part is particularly useful in situations where:

• there has been mechanical damage to the tank (cracks, leaks),
• there are pressure or pump performance errors in the AdBlue system,
• a comprehensive module replacement is necessary, not just individual components.

Before installation, it is recommended to diagnose the system and verify compatibility by OEM number or interchangeable numbers to ensure full compatibility with the specific vehicle configuration.

Selection by OEM Number and Technical Support

Due to different equipment versions and production years of the Mercedes W205, the selection of the AdBlue tank with pump should be based on the OEM part number and reference numbers. This helps avoid problems with installation and communication with the vehicle's electronics.

If you want to better understand how the AdBlue tank fits into the entire fuel supply and exhaust gas purification system, it is worth reading the article describing the construction and servicing of the fuel system – injectors, pumps, and tanks. Practical tips can be found in the material: Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair.

Other Mercedes Fuel Tanks and Filler Necks

If you also need other fuel tanks and filler necks for Mercedes, check out our dedicated offer for this brand. The full list of products can be found here: Mercedes fuel tanks and filler necks.