Mercedes W177 Diesel Injection Fuel Filler Rail Pipe Line Hose NeckA2474701804

Fuel supply line to the diesel injection rail for Mercedes W177 is an original component of the injection system, designed for diesel engines. It ensures a stable supply of diesel fuel to the injection rail, which is crucial for the even operation of injectors and correct combustion characteristics.

Specifications and technical data

• SKU: A2474701804
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2474701804
• Substitutable numbers: A2474701804, A 247 470 18 04
• Fuel type: Diesel
• Category: Fuel Injectors

Purpose and function in the injection system

The offered injection rail fuel line for Mercedes W177 belongs to the injector nozzles category and works with the diesel engine fuel supply system. Its task is to safely and leak-free deliver fuel to the rail, from which individual injectors are supplied.

In a correctly configured injection system, this type of line contributes to:

• maintaining stable fuel pressure in the injection rail, which translates to precise diesel fuel dosing,
• even operation of injectors across the entire engine load range,
• reducing the risk of leaks and drops in fuel system performance.

Construction and technical characteristics

The line has been designed specifically for use in the W177 body, taking into account the engine compartment geometry and fuel line routing. The appropriately selected diameter and shape ensure proper diesel fuel flow and fit with factory mounting points.

Key design features include:

• dedicated connection ends matched to the injection rail and other system components,
• resistance to the operating pressure of diesel systems, typical for modern diesel units,
• compatibility with the factory line routing system in the Mercedes W177 engine compartment.

Benefits of using an original Mercedes line

Using an original fuel line in a diesel injection system brings tangible operational benefits. A component designed by the vehicle manufacturer is matched to the engine's operating parameters, which facilitates diagnostics and servicing.

• Factory fit – the line is ready for installation in the specific injection system without the need for modifications or adjustments.
• Consistency with other system components – maintaining the original configuration helps to sustain stable diesel engine operating parameters.
• Support for correct injector nozzle operation – proper fuel rail supply promotes even fuel atomization and reduces the risk of injector malfunction.

Application in diesel system diagnostics and repairs

In case of injection system problems – such as uneven engine operation, power loss, or starting difficulties – replacing the injection rail supply line can be part of a comprehensive repair. This is particularly important when leaks or mechanical damage to the line are detected.

For users who want to better understand the relationship between the injection rail supply line and injector operation, the article describing the symptoms and consequences of diesel injector failures will be helpful: diesel injector failures – symptoms, consequences, and diagnostics. It allows for a holistic view of the injection system and better planning of service work.

Other Mercedes injector nozzles

If you plan to replace more components during fuel system servicing, it is worth considering selecting other Mercedes injector nozzles from the same product group. The full offer can be found in the category: Mercedes injector nozzles, which will make it easier to assemble compatible components in one place.