Mercedes W176 Fuel Tank Filler Neck Pipe Hose Line W246 A2464701020

Mercedes W176 Fuel Tank Filler Neck Pipe Hose Line is an original diesel fuel system component designed for the brand's compact models. It ensures a tight and stable connection between the filler cap and the tank, which is crucial for safe refueling, proper fuel system operation, and protection against leaks and contamination.

Specifications and technical data

• SKU: A2464701020
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2464701020
• Substitutable numbers: A2464701020, A 246 470 10 20
• Fuel type: Diesel
• Category: Fuel Tanks & Filler Necks

Purpose and function in the fuel system

The described fuel filler neck is a component from the Fuel tanks and filler necks group and operates within the diesel engine supply system. It is responsible for safely directing diesel fuel from the pump nozzle into the tank, minimizing the risk of fuel splashing and the ingress of external contaminants.

In Mercedes compact class vehicles, a correctly selected fuel filler neck is important not only for refueling comfort but also for the stable operation of the tank ventilation system and proper interaction with the vehicle's diagnostic systems.

Compatibility and OEM selection

The component has been designed specifically for the body structure and fuel system of Mercedes W176 and W246 models with diesel engines. As a result, it ensures proper hose routing, correct mounting points, and matched geometry for the connection to the tank.

Selecting this filler neck by OEM number allows for verifying compatibility with a specific equipment version and vehicle model year, which reduces the risk of installation problems and leaks resulting from the use of an ill-fitting replacement part.

Performance characteristics and advantages

As an original Mercedes component, the fuel filler neck maintains factory flow and sealing parameters, which translates into stable operation of the fuel supply system. The design intended for Diesel fuel is adapted to the properties of diesel oil, including its density and chemical impact on the hose materials.

The main benefits of using this component include:

• maintaining the factory tightness of the fuel filler system,
• reducing the risk of leaks and fuel odors in the wheel arch and filler area,
• proper interaction with the tank ventilation system,
• fitment to factory brackets and body covers.

Condition, installation, and service application

The offered item is in used condition, making it an attractive service solution for users looking for an economical yet original part for their Mercedes. In workshop practice, such a fuel filler neck is replaced, among other reasons, after mechanical damage (e.g., impact in the wheel arch area), external corrosion, or leaks manifesting as a smell of fuel.

Before installation, a standard visual inspection of the hose, sealing seats, and mounting points is recommended. A correctly installed fuel filler neck restores the factory fuel flow path and eliminates problems associated with leaks in this area.

Fuel system expansion and technical knowledge

Replacing the fuel filler neck is often associated with diagnosing the entire fuel supply system, including the tank, lines, and ventilation components. To better understand the relationships between these sub-assemblies, part selection by OEM number, and the principles of proper operation, it is worth checking out the guide material Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which discusses practical aspects of diagnostics and servicing.

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, mounting elements, or connection components, check the available parts in the Mercedes fuel tanks and filler necks category.