Mercedes Sprinter W907 Diesel Return Fuel Tank Line Hose Pipe A9074764800

Mercedes Sprinter W907 Diesel Return Fuel Tank Line Hose Pipe is an original fuel system component designed for diesel engines. Engineered by Mercedes, it ensures proper fuel discharge from the fuel rail or injection system back to the tank, which translates into stable engine operation and correct diesel fuel circulation throughout the entire system.

Specifications and technical data

• SKU: A9074764800
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A9074764800
• Substitutable numbers: A9074764800, A 907 476 48 00
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and function in the fuel system

The fuel return line in a Mercedes Sprinter W907 with a Diesel engine is responsible for the safe and controlled discharge of excess fuel to the tank. A properly functioning line:

• stabilizes pressure in the fuel supply system,
• reduces the risk of air entering the system,
• supports the uniform operation of injectors and the high-pressure pump,
• prevents fuel leaks in the area of the tank and vehicle frame.

Thanks to its tailored geometry and correct internal diameter, the line works with factory quick-connectors and mounting brackets, which facilitates service and maintains the factory routing of the fuel line.

Construction and fitment for Mercedes Sprinter W907

This component belongs to the Lines, hoses, and pipes group and is structurally adapted to the chassis architecture of the Sprinter W907. The shape, length, and placement of the ends are optimized for:

• routing the line along the frame and in the vicinity of the fuel tank,
• avoiding points of potential abrasion or crushing,
• compatibility with factory brackets and covers,
• maintaining proper flow under variable thermal and mechanical loads.

Such fitment reduces stress on the line during suspension and body movement, which translates into greater durability of the entire fuel system.

Benefits of using an original fuel return line

Using an original return line in a Mercedes Sprinter W907 brings measurable operational benefits:

• Factory compatibility – the line works with original connectors, mounts, and fuel system components without the need for modifications.
• Stable diesel engine operation – proper fuel return helps maintain the correct fuel pressure and temperature, which promotes uniform engine performance.
• Reduced risk of leaks – matched ends and line routing reduce the likelihood of leaks in the tank and frame area.
• Safe operation – a sealed fuel system means a lower risk of vapor ignition and no unpleasant smell of diesel fuel around the vehicle.

This solution is particularly recommended when replacing damaged, perished, or leaking lines in vehicles used intensively in freight transport or specialized services.

Characteristics of the used component

The offered fuel return line is a used component, sourced from dismantling. This means it retains the manufacturer's original specifications while providing an economical alternative to a new part. Such components are frequently chosen by professional workshops and fleets where a reasonable balance between repair costs and maintaining the factory fuel system design is important.

In the case of diesel systems, it is particularly important that return lines comply with the vehicle manufacturer's requirements – this applies both to the material's resistance to diesel fuel and the maintenance of flexibility within typical operating temperature ranges.

Fuel system service expansion and additional information

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 flexible hose sections, rigid guide pipes, or additional fuel line branches, check the available parts in the Mercedes lines, hoses, and pipes category.

If you are considering a wider replacement of components in your car and want to optimize service costs, it is worth checking out advice on selecting original parts from dismantling – you will find practical tips in the article Used parts for Mercedes – original parts from dismantling.