Volkswagen Golf Mk8 Audi A3 8Y AdBlue Tank With Pump 2.0 TDI 5WA131877D

Volkswagen Golf Mk8 Audi A3 8Y AdBlue Tank With Pump is an original exhaust emission reduction system component designed for Volkswagen Group vehicles. Thanks to its factory design, it ensures proper cooperation with the SCR system, stable AdBlue solution dosing, and compliance with emission standards in modern diesel engines.

Specifications and technical data

• SKU: 5WA131877D
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 5WA131877D
• Substitutable numbers: 5WA131877D, 5WA 131 877 D
• Part type: Auxillary Fuel Tank
• Category: Fuel Tanks & Filler Necks

Purpose and function in the AdBlue system

The offered AdBlue tank integrated with a pump is a component of the exhaust gas treatment system in 2.0 TDI engines used in the eighth-generation Volkswagen Golf and Audi A3 8Y models. It is responsible for storing the urea solution and delivering it at the appropriate pressure to other system components, which enables effective nitrogen oxide reduction in the SCR catalyst.

Thanks to the factory design, proper connection geometry, compatibility with the vehicle's installation, and correct communication between the pump and the engine control electronics are maintained. This is crucial for the stable operation of the powertrain, the absence of controller errors, and maintaining the full efficiency of the exhaust gas treatment system.

Construction and design advantages

The tank belongs to the Fuel tanks and filler pipes group, but in this case, it performs a specialized function in the AdBlue system. The integrated pump reduces the number of connections and potential leak points, which translates into greater reliability of the entire system.

• factory fitment to the body and mounting points in the Golf Mk8 and Audi A3 8Y,
• AdBlue supply system architecture designed for 2.0 TDI engines,
• properly shaped housing, facilitating installation and hose routing,
• pump integration into a single module, which simplifies service and replacement.

Such a solution allows for maintaining stable pressure and AdBlue delivery efficiency, which is important for correct dosing and avoiding problems with system clogging or controller errors.

Condition, origin, and service application

The component comes from the Volkswagen range and is an OEM class part, which means full compliance with the vehicle manufacturer's factory specifications. The product is used, making it an economical solution for AdBlue system repairs, especially in the event of tank or pump damage, or when it is necessary to replace the complete module.

Replacing the complete tank with a pump is often chosen in situations where:

• mechanical damage to the tank housing has occurred,
• there are problems with suction or pumping of the AdBlue solution,
• errors related to pump operation appear in the engine controller,
• regeneration of the existing module is unprofitable or technically difficult.

Selection by part numbers and integration with the fuel-emission system

Due to the close connection with electronics and the exhaust system, the selection of the AdBlue tank with a pump should be based on vehicle data and catalog numbers. This helps avoid compatibility issues, controller errors, and improper operation of the SCR system.

If you want to deepen your knowledge about the operation of the supply and medium storage system in diesel vehicles, diagnostic methods, and selecting components by catalog numbers, it is worth using our guide material: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

Repair expansion within the tank system

If you are planning a comprehensive repair or modernization of the area related to the storage and delivery of liquid media in your Volkswagen and need other components from the same group, such as supply lines, mounting elements, or additional tank modules, check the available parts in the Volkswagen fuel tanks and filler pipes category.

Summary

Volkswagen Golf Mk8 Audi A3 8Y AdBlue Tank With Pump is a practical service solution for vehicles with an SCR system where it is necessary to replace the complete AdBlue storage and delivery module. The original OEM design ensures proper fitment, correct cooperation with electronics, and maintenance of required emission standards, which translates into trouble-free vehicle operation and stable performance of the diesel engine.