Mercedes C140 Complete Fuel Tank Reservoir 100L A1404704901

Mercedes C140 Complete Fuel Tank Reservoir 100L is a factory-original fuel system component designed for the brand's luxury models, ensuring proper capacity and stable engine operating conditions. Thanks to a design that meets manufacturer requirements and its classification within the Fuel tanks and filler pipes group, this part allows for professional repair or replacement of a worn tank without compromising safety or functionality. It is the ideal solution for users expecting solid quality and full compatibility with the factory fuel system.

Specifications and technical data

• SKU: A1404704901
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1404704901
• Substitutable numbers: A1404704901, A 140 470 49 01
• Category: Fuel Tanks & Filler Necks

Purpose and function in the fuel system

The described 100-liter fuel tank has been designed for high-end vehicles, where both an adequate fuel reserve and the stability of the powertrain on long journeys are essential. As a component of the fuel system, it is responsible for:

• safe fuel storage during vehicle operation,
• cooperation with fuel lines, pumps, and fuel system accessories,
• maintaining proper fuel flow under various load conditions.

Due to its design, which complies with Mercedes requirements, the tank maintains the correct geometry and mounting points, which facilitates installation and reduces the risk of leaks or improper routing of lines.

Benefits of using an original fuel tank

Choosing an original fuel tank for the C140 body style allows you to maintain the factory performance parameters of the fuel system. Key advantages include:

• Full compatibility with the factory fuel system – perfect fit for stock mounts, lines, and accessories.
• Properly selected 100-liter capacity – essential for higher-power cars intended for long-distance driving.
• Consistency with the factory chassis architecture – no need for structural modifications.

Such a solution is particularly beneficial for professional repairs, where maintaining the original vehicle characteristics and predictable fuel system behavior under all conditions is paramount.

Part condition and service application

This item comes from a group of used components, which allows for economical repair while maintaining the manufacturer's original specifications. In practice, this means the ability to:

• restore the efficiency of the fuel system after mechanical damage or corrosion of the previous tank,
• replace non-factory solutions with a part consistent with the vehicle's design,
• perform repairs in a manner similar to authorized service standards.

A used, original fuel tank is often chosen by workshops specializing in the Mercedes brand as a reasonable compromise between cost and maintaining factory build quality.

Integration with other fuel system components

To fully utilize the potential of this component, it is worth ensuring the condition of other fuel system elements – lines, pumps, injectors, and venting accessories. For comprehensive fuel system maintenance, a specialized guide on diagnostics and operation will be helpful, available in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, where topics such as selecting parts by manufacturer numbers and typical service procedures are discussed.

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

Why choose used originals for your Mercedes

In the premium car segment, used factory components are increasingly chosen, as they maintain high build quality at a significantly lower purchase cost than new aftermarket replacements. This trend is described in detail in the article Crisis in the new parts market? Why used originals for premium cars are the hottest trend in 2026, showing how the conscious selection of such elements allows you to keep the car in good technical condition while optimizing your repair budget.

For C140 model owners, this means the possibility of using an original fuel tank that maintains factory fitment and operating parameters, while allowing for a rational approach to service costs in the long term of vehicle operation.