Mercedes W251 Fuel Tank Diesel OM642 80L Bare Tank Container A2514702101

Mercedes W251 Fuel Tank Diesel OM642 80L Bare Tank Container is an original fuel system component designed for Mercedes vehicles with a diesel engine. The tank ensures stable diesel storage and proper cooperation with the OM642 engine equipment, which translates into safe and predictable vehicle operation. This is a solution for users looking for a proven component with factory geometry and fitment.

Specifications and technical data

• SKU: A2514702101-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2514702101
• Substitutable numbers: A2514702101, A 251 470 21 01
• Weight: 150
• Fuel type: Diesel
• Category: Fuel Tanks & Filler Necks

Purpose and function in the fuel system

The fuel tank in this model is responsible for safely storing diesel fuel and supplying it steadily to the diesel engine's fuel system. The design is adapted to the characteristics of the OM642 unit, which allows for maintaining proper operating conditions for the fuel pump, filters, and supply lines. The working capacity of the tank has been selected to ensure a reasonable range on a single tank while maintaining the correct vehicle weight distribution.

The element belongs to the Fuel tanks and filler pipes group, allowing it to work with the factory filler neck, ventilation, and equipment mounted in the body of the Mercedes W-Class W251. The appropriate mounting geometry facilitates correct seating of the tank in the chassis space and maintenance of the required clearances.

Construction, material, and performance parameters

The tank has been designed specifically for use with diesel fuel, which means the use of materials resistant to long-term contact with diesel oil and typical operational additives. The construction includes internal baffles that limit fuel sloshing, which improves vehicle stability and fuel system operation under varying loads and speeds.

The entire unit has a specific operating weight, which is important both when choosing the mounting method and during service (removal, replacement, leak testing). The use of original connection geometry and nozzles allows for compatibility with factory fuel lines and mounting elements in the body.

Condition, fitment, and installation

The offered tank is a used item, which in practice means it comes from vehicle dismantling and may show signs of previous use, while maintaining the functionality required for further operation. For workshops and individual users, this is a solution that allows for economical repair of the fuel system while maintaining the original design.

The fitment for the Mercedes W251 with a diesel engine facilitates installation in place of the factory tank, without the need for modifications to the body or fuel system. When replacing, it is recommended to check the condition of lines, seals, and mounting elements to fully utilize the potential of this component and minimize the risk of leaks.

Benefits of using an original fuel tank

Using an original fuel tank in a Mercedes W251 allows for maintaining factory fuel system operating parameters, which is significant for the durability of the power unit, the refinement of the diesel engine, and the correct operation of diagnostic systems. The appropriate tank design reduces the risk of problems with ventilation, air intake into the system, or unstable fuel pressure.

Choosing a component from the Fuel tanks and filler pipes group dedicated to a specific vehicle platform is particularly important in cars equipped with extensive control electronics and a precise injection system. This helps avoid problems resulting from the use of elements with different geometry or those not adapted for use with diesel fuel.

Additional materials and related components

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 supply lines, filler pipes, or ventilation elements, check the available parts in the Mercedes Fuel tanks and filler pipes category.

For a better understanding of how the entire fuel system works and the principles of selecting components by OEM number or VIN, it is worth reading the guide describing the diagnostics, regeneration, and operation of elements such as injectors, pumps, and the fuel tank: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.