Volkswagen VW Tiguan 5N Mk1 AdBlue Reservoir SCR Fuel Tank 2.0 TDI 5N0131877A

Visual condition of the part

The product shows signs of use visible in the photos.

Volkswagen VW Tiguan 5N Mk1 AdBlue Reservoir SCR Fuel Tank is an exhaust gas treatment component designed for diesel engines that works with the selective catalytic reduction system. Thanks to its factory-engineered design for the Tiguan 5N platform, it ensures proper storage of the AdBlue solution and stable operation of the nitrogen oxide emission reduction system in the 2.0 TDI unit.

Specifications and technical data

• SKU: 5N0131877A
• Mark: Audi
• Condition: Used
• OEM Part Number: 5N0131877A
• Substitutable numbers: 5N0131877A, 5N0 131 877 A
• Fuel type: Diesel
• Part type: Fuel Tank
• Category: Fuel Tanks & Filler Necks

Purpose and function in the SCR system

The presented AdBlue reservoir is part of the diesel engine's reducing agent dosing system, responsible for the safe storage of the urea solution and its stable delivery to other system components. A correctly selected reservoir ensures:

• maintaining the tightness of the AdBlue system under road operating conditions,
• proper preparation of the agent for further operation in the SCR system,
• consistency with the factory architecture of the fuel and emission system in the Tiguan 5N.

As a result, the exhaust emission reduction system can operate within a stable range, which helps maintain the parameters of the 2.0 TDI unit and compliance with emission standards for diesel engines.

Compatibility with the 2.0 TDI diesel engine

The component has been designed to work with a diesel powertrain where the SCR system is an integral part of the exhaust gas treatment system. Using a dedicated AdBlue reservoir for this drive configuration allows you to:

• maintain correct routing of lines and mounts within the chassis,
• maintain the proper geometry of the system in relation to other components,
• minimize the risk of installation errors resulting from the use of mismatched replacements.

This solution is particularly important in vehicles where the SCR system works with advanced control electronics and sensors monitoring the operating parameters of the diesel engine.

Performance and installation characteristics

The offered reservoir comes from the Fuel tanks and filler pipes group, which means it is structurally adapted to work in the chassis zone, in the immediate vicinity of fuel and exhaust system components. In practice, this translates into:

• factory-designed mounting points to the body,
• adaptation to work with original lines and connectors,
• easier fitting during service replacement.

The used condition allows for an economical replacement of the component while maintaining factory geometry and compatibility with the vehicle's system, which is beneficial for maintenance repairs in high-mileage cars.

Benefits of using an original AdBlue reservoir

Using an original AdBlue reservoir in a Tiguan 5N with a diesel engine brings a number of practical service and operational benefits:

• Stable SCR system operation – proper storage and routing of the reducing agent reduces the risk of errors related to dosing.
• Vehicle design fit – factory geometry facilitates installation and reduces the need for modifications.
• Consistency with the fuel system – the reservoir works with the existing infrastructure of lines and mounts within the fuel tank zone.

This solution is especially recommended in situations where the priority is to maintain the original configuration of the exhaust gas treatment system in a diesel-powered vehicle.

Technical support and component selection

When selecting an AdBlue reservoir for a specific version of the Volkswagen Tiguan 5N, it is worth paying attention to the manufacturer's markings, engine type, and the configuration of the fuel and emission system. If necessary, you can use catalog numbers and vehicle data for identification to ensure full installation compatibility.

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

To deepen your knowledge on the diagnostics and operation of fuel supply and storage components, as well as fuel additives, it is worth reading the guide Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which discusses practical aspects of selecting parts by manufacturer markings and the principles of their proper maintenance.