Audi A4 B8 2.0 TDI Diesel Adblue Additive Reservoir Pump Fuel Tank 8K0131877R

Audi A4 B8 2.0 TDI Diesel Adblue Additive Reservoir Pump Fuel Tank is an original fuel system component designed for diesel engines, responsible for the precise delivery of AdBlue solution to the exhaust gas treatment system. Thanks to the factory Audi design and its perfect fit for the specific A4 B8 generation, this part ensures stable engine and SCR system performance, which translates into efficient reduction of nitrogen oxide emissions and proper operation of the control electronics. This is a solution for users looking for a technically matched AdBlue reservoir with a pump for their diesel vehicle.

Specifications and technical data

• SKU: 8K0131877R
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0131877R
• Substitutable numbers: 8K0131877R, 8K0 131 877 R
• Fuel type: Diesel
• Color: Blue
• Category: Fuel Pumps & Sending Units

Function and role of the AdBlue reservoir in the Audi A4 B8 2.0 TDI

The reservoir integrated with the AdBlue pump in the Audi A4 B8 2.0 TDI operates within the diesel engine fuel system, ensuring the correct pressure and dosage of the urea solution to the SCR catalyst. A properly functioning pump allows for the maintenance of stable AdBlue injection, which is crucial for meeting exhaust emission standards and avoiding the engine's emergency mode. This component works with level and temperature sensors, as well as the control module; therefore, its correct operation has a direct impact on engine performance and the messages displayed on the instrument cluster.

Construction and fitment for the Diesel fuel system

The presented reservoir with a pump has been designed specifically for Diesel systems with selective catalytic reduction technology. The construction includes an integrated pump, connection ports, and sockets for the electrical installation, which facilitates installation in factory mounting points. The blue color makes it easy to visually identify the component in the engine bay and clearly distinguishes it from classic fuel components. Thanks to this, the mechanic or user has quick access to the subassembly during diagnostics or service.

Benefits of using an original AdBlue reservoir

Choosing an original AdBlue reservoir with a pump for an Audi brings a number of practical technical benefits:

• maintenance of factory SCR system operating parameters and compatibility with engine control unit software,
• secure fitment to factory brackets and lines in the Audi A4 B8,
• proper cooperation with AdBlue solution level and temperature sensors,
• reduced risk of diagnostic errors related to improper pressure or medium flow.

Thanks to this solution, it is possible to effectively restore the proper operation of the emission reduction system in the car, which is important both from the point of view of operation and periodic technical inspections. For fleet users and drivers covering high mileage, this means stable, predictable operation of the exhaust gas treatment system.

Technical category: Fuel pumps and level sensors

The described AdBlue reservoir with a pump belongs to the Fuel pumps and level sensors group, which are components responsible for transporting the working medium and monitoring its quantity in the tank. In practice, this means that this component works with the fuel system and vehicle electronics, transmitting information about the AdBlue solution level and ensuring its circulation in the installation. If you are planning a comprehensive repair or upgrade of the fuel supply and fluid level control area in your Audi and need other elements from the same group, such as pumps, power modules, or level sensors, check the available parts in the Audi fuel pumps and level sensors category.

Used condition and selecting the right part

The item comes from the secondary market, which allows for an economical restoration of the AdBlue system's efficiency while maintaining the original Audi design. Before installation, it is recommended to perform a standard verification of the electrical installation, lines, and system tightness to ensure the proper cooperation of the reservoir and pump with other components. Manufacturer markings and interchangeable numbers are helpful in selecting the right part, allowing for precise matching to the specific engine configuration and vehicle model year.

If you want to better understand how to safely use components from the secondary market, including modules and sensors working with the fuel system and control systems, it is worth checking out our guide on automotive electronics: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?.