Fuel Line Mercedes W213 W447 OM654 Injection Return Pipe Hose A6540700601

Fuel Line Mercedes W213 W447 OM654 Injection Return Pipe Hose is an original diesel fuel system component designed for Mercedes diesel engines from the OM654 family. Thanks to its factory geometry and precise fitment to the specific architecture of the power unit, it ensures stable fuel delivery and proper cooperation with other components of the injection system. This is a solution for users who expect consistency with factory specifications and wish to maintain a fuel system design compliant with the manufacturer's original project.

Specifications and technical data

• SKU: A6540700601
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6540700601
• Substitutable numbers: A6540700601, A 654 070 06 01, 0445130210, 0 445 130 210
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and function in the fuel system

The described fuel line operates within the diesel engine supply system, responsible for the controlled transport of fuel between the components of the injection system. In OM654 units used in Mercedes W213 and W447 models, proper routing of the lines is essential for:

• maintaining the correct operating pressure in the fuel circuit,
• limiting vibrations and stresses acting on the connections,
• reducing the risk of leaks in the high-pressure zone,
• maintaining the correct operation of the injectors and the high-pressure pump.

Thanks to its fitment to the specific engine configuration, the line integrates into the existing installation routing, which promotes stable operation of the supply system and facilitates future diagnostics.

Benefits of using an original fuel line

Using a fuel line dedicated to OM654 engines in Mercedes W213 and W447 models allows for maintaining system operating parameters close to factory standards. Key advantages include:

• Reproduced geometry and flow diameters – compliant with the manufacturer's design, which promotes proper fuel flow.
• Compatibility with the diesel system – the line is adapted to work with diesel fuel and the operating pressures characteristic of this type of unit.
• Assembly consistency – the ability to use factory mounting points and installation routing.
• Easier diagnostics – using a component compliant with technical documentation facilitates work for service centers and workshops.

For users who want to keep the fuel system in a configuration close to the factory one, such a line represents a practical service solution during repairs or replacements of supply components.

Assembly and operational characteristics

The fuel line from this group of components has been designed to operate in the engine compartment, in the immediate vicinity of the diesel power unit. This means its construction takes into account:

• operation in elevated ambient temperatures,
• exposure to vibrations generated by the engine and accessories,
• contact with other components in a tight assembly space.

Proper positioning of the line during assembly is important for the durability of the entire system – correct routing limits point stresses and minimizes the risk of chafing. For this reason, this component is particularly useful during service work involving the disassembly of engine accessories, injector replacement, or fuel system upgrades.

Application in service practice

In Mercedes vehicles with the OM654 engine, the fuel line is one of the elements worth verifying during:

• work related to the injection system (e.g., replacement of injectors, pump),
• diagnostics of leaks in the fuel circuit,
• modernization or rebuilding of engine accessories,
• repairs after collisions in the engine compartment area.

Selecting a component consistent with the engine unit's design allows for reduced assembly time and decreases the risk of needing additional installation modifications. This solution is particularly beneficial for workshops specializing in the maintenance of modern Mercedes diesel engines.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as supply lines, return hoses, or fuel pipes, check the available parts in the Mercedes lines, hoses, and pipes category.

When working on diesel units, especially during major repairs, it is also worth paying attention to the condition of the entire drivetrain – a guide describing key verification stages, available in the article Buying a used engine: 5 things you must check before installation, may be helpful.