Mercedes W205 Diesel Fuel Tank Filler Neck Pipe Hose Line A2054700426

Mercedes W205 Diesel Fuel Tank Filler Neck Pipe Hose Line is an original fuel system component designed for diesel engine models. Thanks to its factory-spec geometry and perfect fit for the W205 body, this fuel filler hose ensures a tight and stable connection between the filler cap and the tank, which translates into safe refueling and proper operation of the fuel system.

Specifications and technical data

• SKU: A2054700426
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2054700426
• Substitutable numbers: A2054700426, A 205 470 04 26
• Fuel type: Diesel
• Category: Fuel Tanks & Filler Necks

Purpose and function in the fuel system

The fuel filler pipe in a diesel-powered Mercedes W205 is responsible for the controlled flow of diesel fuel from the filler neck to the tank. The properly profiled cross-section and diameter of the hose minimize the risk of fuel splashing, facilitate refueling, and support the correct operation of the tank ventilation system. Using a component dedicated to a specific body generation allows for maintaining the correct routing of the hose in the wheel arch and under the floor, without interference with other components.

Benefits of using an original fuel filler pipe

Using an original fuel filler hose in a Mercedes W205 offers a number of practical advantages:

• secure fit to the mounting points on the body and at the fuel tank,
• maintenance of factory-level tightness of connections with nozzles and clamps,
• resistance to diesel fuel and typical chassis operating conditions,
• reduced risk of fuel leaks during refueling and while driving,
• maintenance of the correct hose routing relative to suspension components and covers.

As a result, replacing a worn or damaged hose with a dedicated component allows for restoring the proper operation of the fuel system without the need for modifications or fitting universal replacements. This is particularly important in diesel vehicles, where the stability and tightness of the fuel system affect safety and driving comfort.

Part selection by numbers and compatibility with the diesel system

The fuel filler pipe is designed for diesel-powered vehicles, which means its construction and materials used are adapted to the properties of diesel fuel. When selecting the component, it is worth using catalog numbers and vehicle documentation data to ensure full compatibility with the specific body version and fuel system. Proper fitment eliminates problems with installation, leaks, or incorrect routing of the hose within the chassis.

If you want to better understand the role of hoses, the tank, and other components in the fuel system, it is worth consulting a specialist guide on diagnostics and maintenance. Practical tips, tables, and answers to frequently asked questions can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which will facilitate informed selection of components by OEM and VIN numbers.

Scope of application and expansion of the fuel filler system

The element belongs to the Fuel tanks and filler pipes group, i.e., components responsible for safe storage and delivery of fuel to the fuel system. In practice, when replacing the fuel filler hose, it is often worth checking the condition of mounts, clamps, seals, and covers in the wheel arch and chassis area to avoid the problem returning in the future. Properly selected elements from the same group allow for maintaining the factory geometry of hose routing and proper protection against corrosion and dirt.

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

Practical installation and maintenance tips

When installing the fuel filler pipe in a diesel Mercedes W205, it is worth paying attention to a few technical aspects:

• thorough cleaning of the tank and filler nozzles before installing the hose,
• positioning the hose according to the factory routing, maintaining proper operating slack,
• checking the condition of hose clamps and replacing them with new ones if necessary,
• checking for leaks after installation by performing a short refueling and observing the area around the filler and the tank.

This approach allows you to fully utilize the advantages of the original component and limit the risk of needing to interfere with the fuel system again. For long-term, trouble-free operation, it is also crucial to regularly monitor the condition of the chassis and covers in the area of the fuel lines, especially in vehicles used in difficult road conditions.