Audi Q2 GA AdBlue Additive Fuel Tank Reservoir Bottle Diesel TDI 5WA131877

The AdBlue additive tank for Audi Q2 GA is a specialized component of the diesel engine fuel system, designed to work with Diesel fuel. The blue color of the housing facilitates quick identification of the component in the assembly bay, and its original origin from the Audi group ensures proper fit with the vehicle's factory installation.

Specifications and technical data

• SKU: 5WA131877
• Mark: Audi
• Condition: Used
• OEM Part Number: 5WA131877
• Substitutable numbers: 5WA131877, 5WA 131 877
• Fuel type: Diesel
• Color: Blue
• Category: Fuel Tanks & Filler Necks

Purpose and Function in the Fuel System

The presented AdBlue additive tank for Audi Q2 GA belongs to the Fuel Tanks and Filler Necks group and works with diesel engines equipped with a selective catalytic reduction (SCR) system. Its task is to safely store the AdBlue solution and ensure stable cooperation with the dosing system, which supports the reduction of nitrogen oxides in exhaust gases and helps maintain compliance with emission standards.

The blue finish of the housing allows for intuitive differentiation of the additive circuit from the classic fuel line, reducing the risk of service errors during vehicle maintenance.

Construction and Usability Features

The tank is designed as an integrated component of the vehicle's fuel system, with appropriately shaped connection ports and mounting points. The construction is intended for use with a medium having chemical properties typical of AdBlue, which promotes sealing and resistance to chemical corrosion over a longer period of operation.

The blue color serves both an identification and practical function – it facilitates visual inspection during installation, diagnostics, and potential service work on the diesel engine's fuel system.

Benefits of Using an Original AdBlue Tank

Using an original AdBlue additive tank in the Audi Q2 GA maintains consistency with the vehicle's factory specifications. Thanks to this:

• proper cooperation with the exhaust additive dosing system is maintained,
• the risk of leaks and installation errors resulting from mismatched shapes or connections is minimized,
• the exhaust emission reduction system can operate under stable conditions, which promotes the proper functioning of the diesel engine.

For the user, this means more predictable operation, a lower risk of SCR system-related errors, and easier diagnostics in case of inspection.

Selection, Diagnostics, and Operation of the Fuel System

When replacing the AdBlue additive tank, it is worth paying attention to compatibility with the specific version of the Audi Q2 GA fuel system, as well as to proper venting and connection of the lines. Correct installation directly impacts the proper functioning of the dosing system and the durability of other components.

To better understand the relationships between the tank, pump, injectors, and other fuel supply components, a guide describing the construction and operation of the entire system will be helpful – a detailed discussion can be found in the article Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair.

Expansion of Upgrades within the Audi Fuel System

If you are planning a comprehensive repair or upgrade of the fuel system area in your Audi and need other parts from the same group, such as additional tanks, filler necks, or mounting elements, check the available parts in the Audi Fuel Tanks and Filler Necks category.