Fuel Pipe Mercedes W447 OM654 Diesel Feed Tank Line Hose A4474701901

Fuel Pipe Mercedes W447 OM654 Diesel Feed Tank Line Hose is an original fuel system component designed for diesel engines. It ensures a stable supply of diesel fuel from the tank to the subsequent parts of the system, which translates into reliable engine operation and proper interaction with the factory pump and injectors. Thanks to a design compliant with the manufacturer's standards, this is a solution technically matched to the specifics of the W447 model.

Specifications and technical data

• SKU: A4474701901
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4474701901
• Substitutable numbers: A4474701901, A 447 470 19 01, BG
• Fuel type: Diesel
• Category: Fuel Tanks & Filler Necks

Purpose and function in the fuel system

The offered pipe belongs to the Fuel tanks and filler pipes group and is responsible for transporting diesel fuel from the tank area to the rest of the system. A correctly selected component in this area minimizes the risk of pressure drops, aeration, and leaks, which can cause starting problems, rough engine operation, or ECU errors.

In the case of modern OM654 diesel units, a stable fuel supply is crucial for maintaining proper rail pressure, correct injector operation, and compliance with exhaust emission parameters. Using a pipe that meets the factory specification allows for maintaining the integrity of the entire fuel system.

Compatibility with the OM654 Diesel engine

The pipe has been designed to work with the OM654 diesel engine, which means it is matched to the unit's operating characteristics, the routing of the installation in the engine bay, and the placement of the connectors at the tank and accessories. As a result, installation is straightforward, without the need for modifications or the use of additional adapters.

The supply system in diesel engines is particularly sensitive to leaks and contamination, which is why using the correct feed pipe helps maintain stable common rail system operating parameters and reduces the risk of premature wear of the high-pressure pump and injectors.

Characteristics of the used component

The offered fuel pipe is a used component, which in practice means a favorable compromise between cost and functionality. For many service applications, especially in vehicles used intensively, such a choice allows for an economical repair while maintaining the original geometry and routing of the pipe.

When choosing a used component from this group, it is worth paying attention to the absence of visible mechanical damage, cracks, or signs of tampering, as well as the condition of the connectors and fittings. A properly selected feed pipe allows for restoring the correct operation of the fuel system without the need for costly replacement of larger subassemblies.

Benefits of using an original fuel pipe

Using a fuel feed pipe dedicated to a specific vehicle configuration brings a number of practical benefits:

• maintaining the factory routing of the fuel system along the body and chassis,
• proper matching of diameters and pipe shape to the tank connectors and engine accessories,
• reducing the risk of leaks and pressure drops in the system,
• maintaining correct diesel engine operating parameters under various load conditions.

For workshops and individual users, this means simpler installation, fewer potential points of failure, and easier diagnostics of any future faults.

Related fuel system components and technical knowledge

During service work on feed pipes, it is worth paying attention to the condition of other fuel system components – especially the injectors, the pump, and the tank itself. It is also good practice to verify the tightness of the entire installation after installing the pipe and to check engine operating parameters using computer diagnostics.

If you want to better understand the relationships between the feed pipe, pump, and injectors, as well as learn the principles of selecting parts by OEM and VIN numbers, the following article will be helpful: 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 feed pipes, return lines, or connection elements at the tank, check the available parts in the Mercedes fuel tanks and filler pipes category.