Mercedes W212 Fuel Tank Diesel OM651 Complete A2124708601

Mercedes W212 Fuel Tank Diesel OM651 Complete is a complete fuel system component designed for diesel engines, specifically engineered for this generation of E-Class models. The original Mercedes design ensures a perfect fit to the chassis, correct routing of lines, and stable integration with fuel system accessories. This is a solution for users who want to restore the proper operation of the fuel system without compromising on compatibility.

Specifications and technical data

• SKU: A2124708601
• 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, BG
• Weight: 150
• Fuel type: Diesel
• Category: Fuel Tanks & Filler Necks

Purpose and function in the fuel system

The presented tank belongs to the Fuel tanks and filler pipes category and is responsible for the safe storage of diesel fuel and its stable delivery to the OM651 engine fuel system. The construction is prepared for integration with accessories typical for diesel units, which is crucial for proper venting, pump operation, and fuel level sensor functionality.

A properly selected fuel tank in this generation of Mercedes E-Class vehicles contributes to:

• proper engine fueling at various fuel levels,
• stability of the injection system under high loads,
• safe routing of lines and mounting elements within the chassis.

Construction and fitment for Mercedes W212

The tank has been designed for the specific W212 body, which means it fits factory mounting points and is correctly shaped to fit under the vehicle floor. This ensures adequate space for suspension components, the exhaust system, and underbody shields, and installation does not require any structural modifications.

The component is prepared for use with a diesel fuel system, which is important for material resistance and the internal geometry of the tank chambers. The design accounts for the specifics of the OM651 unit, including fuel flow characteristics and requirements regarding the return of excess fuel from the fuel rail.

Performance parameters and operation

The tank has a specific operating weight, adapted to the structural requirements of the chassis and mounting points in the Mercedes W212. The appropriate mass and geometry influence load distribution and mounting stability, which is especially important when driving with a full tank and under dynamic operating conditions.

The product comes from the used original parts segment, which in practice means maintaining factory geometry and compatibility while offering cost-effectiveness compared to new components. This is a good solution for post-accident repairs, mechanical damage to the tank, or the need to replace the element due to corrosion or leaks.

Selection by numbers and system integration

The fuel tank has a dedicated OEM part number and associated interchangeable numbers, which facilitates precise identification and selection for a specific body and engine version. In practice, this helps avoid problems with mismatched mounts, different housing shapes, or differences in fuel line connections.

Before installation, it is worth verifying compatibility using the VIN and comparing the layout of ports, mounts, and line routing with the currently installed element. This makes the installation process smoother and reduces the risk of needing to disassemble it again.

Technical support and additional materials

To better understand the role of the tank in the entire fuel system and to properly plan diagnostics and potential equipment regeneration, it is worth consulting a specialized guide on the fuel system, injectors, and pumps – it is discussed in detail in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which contains practical tables and answers to frequently asked questions.

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 out the available parts in the Mercedes fuel tanks and filler pipes category.