Mercedes W177 Fuel Filler Pipe Fuel Tank Neck Line Hose Petrol A1774701700

Mercedes W177 Fuel Filler Pipe Fuel Tank Neck Line Hose Petrol is an original fuel system component designed for Mercedes vehicles with petrol engines. The precisely engineered geometry of the pipe ensures a tight and secure fuel flow from the filler neck to the tank, which translates into stable system operation and comfort during daily use.

Specifications and technical data

• SKU: A1774701700
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1774701700
• Substitutable numbers: A1774701700, A 177 470 17 00
• Fuel type: Petrol
• Category: Hoses, Lines & Pipes

Purpose and technical function

The fuel filler pipe in the W177 model is responsible for the controlled flow of petrol from the filler neck to the tank, minimizing the risk of leaks and improper system ventilation. The properly selected cross-section and shape of the pipe reduce fuel turbulence during refueling, which helps to avoid nozzle shut-off issues and fuel loss.

This component belongs to the Lines, hoses, and pipes group, which are parts responsible for transporting working fluids in the vehicle. In the case of the fuel system, the correct selection and condition of such a pipe have a direct impact on the safety, tightness, and proper operation of the entire supply system.

Benefits of using an original fuel filler pipe

Using an original fuel filler pipe in a Mercedes W177 allows you to maintain the factory operating parameters of the system. Key advantages include:

• maintaining proper seal integrity within the filler and tank area,
• correct routing of the pipe relative to the body and chassis components,
• reduced risk of mechanical damage thanks to the tailored length and shape,
• compatibility with the fuel tank ventilation system.

As a result, the petrol supply system operates stably, and the risk of fuel odors appearing near the wheel arch or filler neck is reduced. A used, original component represents a reasonable compromise between repair costs and maintaining the manufacturer's standards.

Part selection by numbers and integration with the fuel system

The fuel filler pipe is a component strictly matched to a specific body generation and petrol fuel system configuration. Proper selection based on the OEM part number and interchangeable numbers helps avoid issues with installation, incorrect pipe routing, or collisions with other chassis components.

In practice, this means that after installation, the pipe maintains factory mounting points, and its path is consistent with the manufacturer's design. This is important both from a safety perspective and for subsequent service maintenance, such as when removing the fuel tank or working in the rear body area.

Condition, application, and operational safety

The offered fuel filler pipe comes from a group of used parts, which allows for lower repair costs while maintaining the original design. Before installation, a standard visual inspection is recommended to check for any mechanical damage, wear on working surfaces, and mounting sockets for clamps and brackets.

A properly selected and installed fuel filler pipe in a Mercedes W177 supports safe petrol refueling, reduces the risk of leaks, and helps maintain correct pressure and ventilation within the tank. This is particularly important in vehicles used intensively, where the fuel system is exposed to variable thermal and mechanical loads.

System expansion – other lines and pipes for Mercedes

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 additional return lines, breather hoses, or pipes for transporting working fluids, check the available parts in the Mercedes lines, hoses, and pipes category.

Technical support and selection of used parts

When selecting used fuel system components, it is worth following procedures based on OEM numbers and real compatibility with a specific engine and body version. Materials describing best practices for selecting original used parts, their verification, and assessing repair cost-effectiveness can be helpful – for example, an article like BMW – sports performance and precision. How do original used parts extend the life of a Bavarian icon?, which discusses universal principles of working with aftermarket components.