Hyundai H-1 D4CB Diesel Fuel Tank Filler Neck Pipe Line Hose 31030-4H000

Hyundai H-1 D4CB Diesel Fuel Tank Filler Neck Pipe Line Hose is an original fuel system component designed for diesel-powered vehicles. It ensures a tight and stable fuel flow from the filler neck to the tank, which directly impacts reliable operation and refueling safety. Thanks to its design compliant with the manufacturer's standards, the component works perfectly with the Diesel fuel system.

Specifications and technical data

• SKU: 31030-4H000
• Mark: Hyundai
• Condition: Used
• OEM Part Number: 31030
• Substitutable numbers: 31030-4H000, 3 103 0-4 H0 00
• Fuel type: Diesel
• Category: Fuel Tanks & Filler Necks

Purpose and function in the fuel system

The fuel tank filler neck pipe in the Hyundai H-1 model with the D4CB unit is responsible for precisely guiding diesel fuel from the filler cap to the tank. The properly selected cross-section and geometry of the pipe reduce the risk of fuel splashing, facilitate full refueling, and support the correct operation of the tank ventilation system. In diesel vehicles, stable fuel flow is crucial for maintaining proper pressure and cleanliness in the subsequent components of the system.

Construction and fitment for Hyundai H-1

The offered filler neck has been designed specifically for the body architecture of the Hyundai H-1, which translates into proper routing relative to the frame rails, wheel arches, and tank mounts. The original mounting geometry allows for installation at factory points without the need for modifications or custom brackets. This ensures compatibility with the factory routing of lines and the appropriate distance from elements exposed to mechanical damage.

Benefits of using an original filler pipe

Using a dedicated fuel tank filler neck pipe in a diesel vehicle provides measurable operational benefits:

• maintaining the tightness of the filler system and reducing the risk of leaks during refueling,
• proper fuel flow to the tank, in accordance with the manufacturer's specifications,
• better protection against corrosion and mechanical damage compared to generic replacements,
• maintaining proper cooperation with the tank ventilation system.

For commercial vehicles such as the Hyundai H-1, where the fuel system operates under demanding conditions, a properly selected filler neck helps reduce unplanned downtime and additional service costs.

Component condition and installation aspects

The product comes from a group of used parts, which allows for economical repair while maintaining the original manufacturer's specifications. Before installation, a standard visual inspection, internal cleaning, and verification of mounting points for body fitment are recommended. A properly prepared fuel tank filler neck pipe enables efficient workshop installation and restores full functionality of the fuel system in a diesel-powered vehicle.

Integration with the Diesel fuel system

In diesel units, the quality of fuel path components has a direct impact on the service life of injectors, the high-pressure pump, and the tank itself. A properly selected filler neck minimizes the risk of contaminants entering during refueling and supports the maintenance of stable operating conditions for the entire system. For users who want to deepen their knowledge about the diagnostics and operation of the fuel system, the following article will be useful: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

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