Volkswagen Caddy Mk3 Mk4 AdBlue Fuel Tank Filler Neck 2.0 TDI 2K5131965

Volkswagen Caddy Mk3 Mk4 AdBlue Fuel Tank Filler Neck is an original AdBlue additive supply system component designed for third and fourth-generation Caddy models with a diesel engine. This component from the Fuel tanks and filler pipes group ensures a tight and stable connection of the filling hose, which translates into the proper operation of the exhaust emission reduction system. This used OEM part is a sensible choice for users looking for a factory fit without the need to invest in a new part.

Specifications and technical data

• SKU: 2K5131965
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 2K5131965
• Substitutable numbers: 2K5131965, 2K5 131 965
• Category: Fuel Tanks & Filler Necks

Purpose and function of the AdBlue filler neck

The presented AdBlue fuel tank filler neck is designed specifically for the additive supply system in Volkswagen Caddy Mk3 and Mk4 generation models with a 2.0 TDI unit. It is responsible for the safe and controlled introduction of AdBlue fluid into the tank, minimizing the risk of spills and the ingress of contaminants into the system. A properly selected filler neck supports the stable operation of the SCR system, which is important for maintaining the vehicle's compliance with exhaust emission standards.

Construction and fitment to the supply system

The element was constructed as an original Volkswagen part, thanks to which it retains the factory geometry and mounting points intended for the Caddy Mk3/Mk4. The properly shaped filler channel facilitates the guidance of the dispenser nozzle or funnel, and the matched connections allow for a tight connection with the hoses leading to the AdBlue tank. This type of solution reduces stress in the system, which promotes longer, stable operation.

Benefits of using an original used part

Choosing an original, used AdBlue fuel tank filler neck for a Volkswagen Caddy is a compromise between cost and quality. The OEM part retains:

• factory fitment to the body and additive supply system,
• compatibility with existing mounts and hoses,
• operating parameters consistent with the vehicle manufacturer's specifications.

Thanks to this, the installation proceeds smoothly, without the need for modifications or the use of additional adapters. This solution is particularly beneficial for maintenance repairs when the filler neck itself or its surroundings have been damaged, while the rest of the system remains functional.

Condition, verification, and selection by part numbers

The item is offered as a used part, which in practice means it comes from vehicle dismantling and has been verified for suitability for further use. For components in the Fuel tanks and filler pipes group, it is crucial to maintain tightness and ensure there is no mechanical damage in the area of mounts and connection stubs. Selecting a filler neck for a specific Caddy 2.0 TDI version should be based on OEM catalog numbers and interchangeable numbers, which minimizes the risk of error when ordering.

Integration with the fuel and AdBlue system – knowledge for the user

A functional AdBlue filler neck is an essential element of the entire additive supply system, working in conjunction with the tank, hoses, pump, and dosing module. For drivers and mechanics who want to better understand the relationships between these components, a guide describing the construction and maintenance of the supply system will be useful. A detailed discussion of issues related to tanks, hoses, and diagnostics can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which helps to consciously plan repairs and the selection of parts by OEM numbers.

If you are planning a comprehensive repair or upgrade of the supply and storage area for operating fluids in your Volkswagen and need other elements from the same group, such as filler hoses, connection stubs, or mounting elements, check the available parts in the Volkswagen fuel tanks and filler pipes category.