Mercedes W906 OM642 Diesel Fuel Line Pipe Hose Tube A6420705332

Mercedes W906 OM642 Diesel Fuel Line Pipe Hose Tube is an original fuel system component for diesel engines, designed for OM642 units used in W906 series models. Thanks to its precise fit to the factory installation, it ensures stable fuel delivery, supporting smooth diesel engine operation and proper interaction with engine bay accessories.

Specifications and technical data

• SKU: A6420705332
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420705332
• Substitutable numbers: A6420705332, A 642 070 53 32
• Fuel type: Diesel
• Category: Other Engine Parts

Purpose and function in the fuel system

The fuel line in the OM642 engine is responsible for the controlled transport of diesel fuel between fuel system components, which directly impacts engine performance, pressure stability, and correct fuel metering. In diesel engines, a properly selected fuel line reduces the risk of power loss, starting issues, or uneven idling.

This component is structurally matched to the engine bay architecture of the Mercedes W906, which facilitates routing the line through original mounting points and minimizes stress during engine operation.

Compatibility with the OM642 diesel engine

The OM642 engine is an advanced diesel unit where the fuel system operates under significant load. Using a fuel line dedicated to this type of construction supports:

• maintaining proper fuel flow parameters,
• stable interaction with injection equipment,
• reducing the risk of leaks at critical points of the installation.

As a result, the fuel line designed for the OM642 helps maintain predictable engine behavior, which is particularly important in commercial vehicles based on the W906 platform.

Characteristics of the used component

The offered fuel line is a secondary market component, which allows for economical repair of the fuel system while maintaining the original geometry and routing. A used component of this type is a good choice in situations where the existing line has suffered mechanical damage, external corrosion, or deformation resulting from operation.

Using an original dismantled fuel line eliminates the need for installation modifications, and assembly can be carried out based on factory mounting points and standard service procedures.

Benefits of using an original fuel line

Choosing a fuel line dedicated to the Mercedes W906 with an OM642 engine provides a number of practical benefits:

• Factory fit – compatibility with the original routing in the engine bay.
• Stable fuel system operation – reduced risk of airlocks and fuel pressure drops.
• Easier diagnostics – the mechanic works with a solution consistent with the manufacturer's service documentation.
• Ability to maintain consistency with other diesel fuel system components.

Technical support and additional information

Before purchasing, it is worth verifying the compatibility of the fuel line with the specific vehicle configuration, taking into account the engine type and the fuel system used. In case of doubt, comparing the shape and connections with the element currently installed in the vehicle will help in selecting the correct spare part.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as fuel lines, connectors, or small mounting components, check the available parts in the Other Mercedes category.

For a comparison of solutions used in high-performance engines and a better understanding of the differences in engine and accessory construction, it is worth reading the article describing the designs of high-performance models – you can find it here: Audi RS vs other models – what's under the hood and chassis?.