Mercedes W203 Diesel Complete Fuel Tank 62L A2034709101

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W203 Diesel Complete Fuel Tank 62L is a factory-original fuel system component designed for diesel versions of the popular C-Class. The offered tank belongs to the Fuel tanks and filler pipes category and provides a solid foundation for professional repairs or the replacement of damaged components in diesel-powered Mercedes vehicles. By maintaining the original geometry and 62-liter capacity, it ensures proper integration with the factory fuel system.

Specifications and technical data

• SKU: A2034709101-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2034709101
• Substitutable numbers: A2034709101, A 203 470 91 01, A2034705394, A 203 470 53 94, A2034705494, A 203 470 54 94
• Fuel type: Diesel
• Category: Fuel Tanks & Filler Necks

Purpose and function in the fuel system

The presented fuel tank is a component dedicated to Mercedes C-Class W203 generation models with diesel engines. Its purpose is the safe storage of diesel fuel, stable supply to the injection system, and integration with fuel system accessories such as lines, pumps, and fuel level sensors. The tank's construction is adapted to the characteristics of diesel units, including higher requirements for sealing and vibration resistance.

Construction and fitment for Mercedes W203

The tank has been designed for a specific chassis platform, which translates into proper positioning relative to the undercarriage, mounting points, and fuel line routing. The appropriately shaped housing enables the correct operation of the venting system and ensures stable fuel behavior during acceleration, braking, and cornering. As a result, the fuel system maintains correct operating parameters under typical service conditions.

Benefits of using an original used tank

Choosing an original, used fuel tank for a Mercedes allows you to maintain factory fitment without the need for modifying mounts or the fuel system. This is a cost-effective solution that is also technically consistent with the vehicle's design. Using a component from the same model family reduces the risk of assembly issues, leaks, or incorrect fuel level readings.

Fuel type and operational aspects

The tank is designed for Diesel fuel systems, which is important for both material compatibility and proper interaction with fuel system accessories. Selecting the correct tank for the fuel type minimizes the risk of damage resulting from chemical incompatibility and ensures stable operating conditions for the pump and injectors. During replacement, it is recommended to check the condition of lines, mounts, and venting components to restore full system efficiency.

Part number matching and technical support

The component features an OEM part number and interchangeable numbers, which facilitates precise identification and selection of the correct tank for a specific equipment version and vehicle model year. Before purchasing, it is worth comparing the markings with the vehicle documentation or using a VIN-based lookup to ensure full assembly compatibility.

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

To better plan service work and understand the relationships between the tank, pump, and injectors, it is worth consulting our expert guide: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration. You will find practical tips there regarding diagnostics, regeneration, and the operation of fuel systems in diesel engines.