Mercedes W212 Fuel Tank Diesel OM651 OM642 Fuel Tank Filler Pipe A2124708901

Mercedes W212 Fuel Tank Diesel OM651 OM642 Fuel Tank Filler Pipe is an original fuel system component designed for diesel engine models, ensuring stable fuel storage and safe delivery to the engine unit. This component from the Fuel tanks and filler pipes category has been designed for demanding users who expect factory-fit and predictable fuel system performance. Thanks to its design tailored to OM651 and OM642 diesel engines, it provides a solid foundation for professional repair or modernization of the fuel supply system.

Specifications and technical data

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

Purpose and function in the fuel system

The fuel tank with filler pipe for the Mercedes W212 is responsible for safely storing diesel fuel and providing stable delivery to the diesel engine supply system. The design is adapted to the characteristics of the OM651 and OM642 units, where maintaining the correct fuel level, limiting aeration, and ensuring proper operating conditions for pumps and injectors is crucial.

This element works in conjunction with other fuel system components, such as lines, pumps, and filters, to create a cohesive supply system. A properly selected tank minimizes the risk of leaks, venting issues, and engine performance disruptions at low fuel levels.

Construction, fitment, and performance parameters

The fuel tank in question has been designed specifically for the W212 platform, which translates into precise fitment to the Mercedes body and compatibility with factory mounts and the filler system. The integrated fuel filler facilitates installation and subsequent maintenance, while also reducing the number of connections that could be a potential source of leaks.

Being adapted for diesel fuel means that the design solutions used take into account the properties of diesel oil, including its density, operating temperature, and fuel purity requirements. The tank has a specific weight, which is important both during selection and when planning the installation and vehicle maintenance.

Benefits of using an original fuel tank

Using an original fuel tank in a Mercedes W212 with a diesel engine offers a number of practical benefits:

• factory fitment to the body and mounting system,
• compatibility with the filler system and fuel lines,
• maintenance of proper diesel supply system operation,
• reduced risk of leaks and venting problems,
• easier diagnostics and service due to compliance with manufacturer documentation.

A used part of this class allows for economical fuel system repair while maintaining parameters close to factory specifications, which is particularly important in the case of modern diesel units with high-precision fuel dosing.

Condition, verification, and service application

The product is offered as a used part, which in practice means the possibility of significantly reducing repair costs while maintaining the original manufacturer's specification. Before installation, a standard visual inspection for any mechanical damage, the condition of connectors, mounts, and connection ports is recommended. In the case of diesel systems, it is also worth paying attention to the cleanliness of the tank interior and the condition of cooperating elements, such as lines and filters.

The selection of a fuel tank for a specific version of the Mercedes W212 should always be verified based on manufacturer markings, catalog data, and engine configuration. Such an approach minimizes the risk of installation problems and ensures proper cooperation with the vehicle's fuel system.

Technical support and additional materials

To better understand the role of the fuel tank in the entire supply system and to properly plan the repair, it is worth using expert materials. A detailed discussion of the fuel system operation, including injectors, pumps, and the tank, can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, where selecting parts by OEM numbers and practical diagnostic procedures are also described.

If you are planning a comprehensive repair or modernization of the fuel supply area in your Mercedes and need other elements from the same group, such as filler hoses, vent pipes, or additional mounting elements, check the available parts in the Mercedes fuel tanks and filler pipes category.