Mercedes Vito W447 Diesel Fuel Line Hose Fuel Tank Return Pipe A4474705401

Mercedes W212 OM642 Diesel Fuel Line Hose is a component from the Hoses, Pipes, and Tubes category, designed for the diesel engine fuel system. It ensures a stable flow of diesel fuel in the OM642 unit, guaranteeing the correct operation of the fuel system in Mercedes E-Class W212 generation vehicles.

Specifications and technical data

• SKU: A4474705401
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4474705401
• Substitutable numbers: A4474705401, A 447 470 54 01, KD
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and Function in the Fuel System

The fuel hose for the OM642 engine is responsible for safely routing diesel fuel between fuel system components such as the pump, rail, and injectors. Its design, adapted to the W212 diesel engine architecture, minimizes the risk of leaks and improper hose routing within the engine bay.

This component is designed to operate under conditions typical for modern diesel engines, where variable pressures and elevated temperatures are present. The correct shape and diameter of the hose support proper engine fueling, which translates to stable running performance and predictable response to load.

Benefits of Using an Original Fuel Hose

Using a fuel hose specifically designed for the Mercedes W212 with an OM642 engine offers a range of practical benefits:

• Precise Geometric Fit – the hose follows the factory routing, facilitating installation and minimizing stress.
• Diesel System Compatibility – the material and cross-section of the hose are adapted for use with diesel fuel and the characteristics of a diesel engine.
• Stable Fuel System Operation – a correctly selected hose reduces the risk of pressure drops and engine fueling issues.
• Safe Operation – proper hose routing minimizes the risk of abrasion, micro-cracks, and fuel leaks.

Technical Characteristics and Installation

This hose belongs to the group of wear parts that are particularly exposed to thermal and chemical stress in diesel engines. For the OM642 unit, the correct selection of the fuel hose is crucial for:

• maintaining adequate pressure in the fuel system,
• minimizing air ingress into the system,
• maintaining seal integrity under temperature and load changes.

During installation, it is recommended to:

• check the condition of connectors and clamps,
• route the hose according to the factory path, maintaining clearance from hot components,
• check the system for any leaks after the initial startup.

Why Choose a Mercedes Diesel Fuel Hose

Choosing a fuel hose dedicated to the Mercedes W212 diesel engine is a solution that maintains consistency with the vehicle's original design. The diesel fuel system is particularly sensitive to leaks and incorrect pressure, therefore, using the correct hose directly impacts the reliability of the powertrain and the comfort of using the car.

If you need other components from the Hoses, Pipes, and Tubes category for this brand, check the available Mercedes hoses, pipes, and tubes to select components that are structurally compatible with your system.

How to Select the Correct Fuel Hose by OEM Number

To ensure that the selected fuel hose is suitable for a specific version of the Mercedes W212 with an OM642 engine, it is advisable to verify compatibility using the OEM number and vehicle data. A detailed guide on selecting parts by catalog numbers and vehicle data can be helpful – practical tips can be found in the article Guide: How to Select the Right Car Part by VIN and OEM Number, which explains the compatibility verification process step by step.