Mercedes W212 Fuel Tank Diesel OM651 Complete A2124708601

Mercedes W212 Fuel Tank Diesel OM651 Complete is an original fuel system component designed for Mercedes vehicles equipped with the OM651 diesel engine. It ensures safe storage of diesel fuel and stable supply to the power unit, which translates into predictable engine performance and proper operation of the fuel injection system.

Specifications and technical data

• SKU: A2124708601-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2124708601
• Substitutable numbers: A2124708601, A 212 470 86 01, A2124700194, A 212 470 01 94, A2124700400, A 212 470 04 00, A2124708901, A 212 470 89 01, BG
• Weight: 150
• Fuel type: Diesel
• Category: Fuel Tanks & Filler Necks

Purpose and function in the fuel system

The presented tank is a component from the Fuel tanks and filler pipes group, designed for use with a diesel engine. It is responsible for fuel storage, initial hydraulic stabilization, and proper delivery to subsequent system components, such as the low-pressure pump or fuel filter. The tank's design is adapted to the operating characteristics of the OM651 unit, which facilitates maintaining stable pressure and reduces the risk of air locks during dynamic driving.

Compatibility and identification by part numbers

The component has a dedicated OEM part number and a set of interchangeable numbers, which facilitates precise identification and selection for a specific W212 body version. This allows for controlled verification of compatibility with the vehicle using manufacturer catalogs or VIN searches. The presence of reference numbers also allows for trouble-free verification in specialized service centers and parts selection systems.

Technical parameters and performance features

The tank is adapted for use with diesel fuel, which means appropriately selected materials and an internal structure that limits cavitation and excessive fuel foaming. The weight of the component specified in the documentation testifies to its solid construction and the use of materials ensuring rigidity and resistance to operational loads, such as temperature changes, body vibrations, or local stresses in the mounting zone.

As a used part, it comes from dismantling, which in practice means the possibility of an economical repair of the fuel system while maintaining the original geometry and mounting points. The original design solution facilitates installation in factory locations without the need for modifications to the body or fuel system.

Benefits of using an original fuel tank

Using an original tank in a Mercedes W212 with an OM651 engine allows for maintaining the factory characteristics of the fuel system. Key advantages include:

• Full dimensional compatibility with factory mounting points and fuel line routing.
• Properly designed internal geometry, promoting stable fuel suction at various fill levels.
• Possibility of using factory fuel level sensors and equipment mounted in the tank.
• Reduced risk of leaks compared to random replacements of uncertain origin.

Technical support and additional information

To better understand the role of the tank in the entire fuel supply system, it is worth reading an article describing the operation of injectors, pumps, and the fuel tank, as well as the principles of diagnostics and selection by OEM numbers – this is discussed in detail in the entry Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

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 additional tanks, lines, or filler pipes, check the available parts in the category Mercedes fuel tanks and filler pipes.

For larger service projects, also covering other vehicle components, a guide showing how to effectively collect original used components in one place may be helpful – you will find more practical tips in the article Comprehensive supply: from the engine to the smallest clip – how to collect used car parts in one place.