Mercedes-Benz A B W176 W246 Diesel Fuel Tank Return Pipe Hose Line A2464701364

Mercedes-Benz A B W176 W246 Diesel Fuel Tank Return Pipe Hose Line is an original fuel system component designed for use with diesel engines. Engineered by the vehicle manufacturer, it ensures a stable return of fuel to the tank, supporting correct system pressure and smooth engine operation.

Specifications and technical data

• SKU: A2464701364
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2464701364
• Substitutable numbers: A2464701364, A 246 470 13 64, BG
• Fuel type: Diesel
• Category: Fuel Tanks & Filler Necks

Purpose and function in the fuel system

The described fuel return pipe is part of the Fuel tanks and filler pipes category and works with the fuel supply system in diesel engines. It is responsible for the safe drainage of excess fuel from the rail, pump, or injectors back to the tank, which stabilizes fuel temperature and reduces the risk of air entering the system.

In Mercedes-Benz A-Class and B-Class W176/W246 generation vehicles, a correctly selected return pipe is essential for:

• maintaining proper operating pressure in the fuel system,
• efficient operation of the high-pressure pump and injectors,
• reducing thermal loads on the fuel in the tank,
• limiting leaks and drops in system efficiency.

Original origin and fitment for Mercedes

The pipe was designed specifically for Mercedes vehicles, which translates into proper routing of the fuel line in the engine bay and chassis, in accordance with factory geometry. The original design minimizes stress, friction against other components, and the risk of abrasion during operation.

Thanks to the use of a dedicated mounting solution, the fuel return pipe works with factory quick-connectors and brackets, which facilitates service and reduces the time required for replacement. This is particularly important in modern Common Rail systems, where tightness and pressure resistance are crucial for stable engine performance.

Performance characteristics of the used component

The item comes from dismantling, which means it is a used part that retains the functionality required for further operation. Such components are often chosen for servicing older vehicles, where a reasonable balance between repair costs and maintaining the manufacturer's original specifications is important.

In the case of fuel lines, it is particularly important to maintain adequate flexibility, tightness, and resistance to diesel fuel. The original return pipe meets these requirements by design, allowing for safe use in the fuel system without the need for modifications or adaptations.

Benefits of using an original return pipe

Using a factory fuel return pipe in a Mercedes-Benz A/B W176 W246 brings a number of practical service and operational benefits:

• maintaining the factory routing of the pipe and compatibility with brackets,
• reducing the risk of leaks compared to universal replacements,
• proper cooperation with the diesel fuel system,
• easier diagnostics of potential faults in the future.

For workshops and individual users, this means more predictable installation and a lower risk of post-repair issues. Combined with proper fuel system diagnostics, this allows for restoring stable engine operation and limiting unwanted power drops.

Technical support and educational materials

To better plan the service of the fuel system in a diesel engine, it is worth using materials describing the construction and diagnostics of the entire fuel circuit. A detailed discussion of the operation of injectors, pumps, and the fuel tank, as well as practical tips on selecting parts by OEM numbers, can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

If you are planning a comprehensive repair or upgrade of the fuel supply area in your Mercedes and need other elements from the same group, such as return pipes, sections near the tank, or fragments of the filler line, check the available parts in the Mercedes fuel tanks and filler pipes category.