Mercedes ML W164 OM642 Diesel Fuel Tank Line Pipe A6420700532

Mercedes W164 W251 OM642 Diesel Fuel Line Hose is an original fuel system component designed for installation in the front of diesel-powered vehicles. With its factory geometry and precise fit for the OM642 engine, it ensures stable fuel delivery and proper integration with other system components. This used part from the Fuel Tanks category allows for a technically correct repair without altering the fuel system's structure.

Specifications and technical data

• SKU: A6420700532
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420700532
• Substitutable numbers: A6420700532, A 642 070 05 32
• Location on the vehicle: Front
• Fuel type: Diesel
• Category: Fuel Tanks

Purpose and Function of the Fuel Line

In a diesel system, the fuel line is responsible for safely and securely delivering fuel between fuel system components such as the tank, pump, and injector rail. For OM642 engines, using the correct hose is crucial for:

• maintaining the correct operating pressure in the fuel circuit,
• reducing vibrations and stresses resulting from engine operation,
• minimizing the risk of leaks and air ingress into the system,
• ensuring compliance with the factory routing of lines in the engine bay.

Selecting a line specifically designed for a particular engine and fuel type helps maintain stable injector system operation and reduces the risk of failures caused by using aftermarket parts with incorrect specifications.

Compatibility with Diesel Systems and the OM642 Engine

This fuel hose has been engineered to work with diesel engines, meaning it is adapted to the pressures, temperatures, and fuel properties characteristic of diesel. The hose's construction accounts for:

• resistance to oily fractions and additives used in diesel fuel,
• operation at elevated temperatures within the engine bay,
• appropriate flexibility while maintaining dimensional stability.

As a result, the hose can be used to restore proper sealing and flow in the fuel system without requiring modifications to the factory installation routing. This is particularly important when servicing OM642 engines, where precise component fitment impacts the overall system's performance and longevity.

Vehicle Placement and Installation Aspects

The line is intended for installation in the front of the vehicle, within the engine compartment. This placement requires careful routing to avoid contact with high-temperature components and moving auxiliary parts. During installation, pay attention to:

• correct positioning in factory brackets and guides,
• checking the condition of connectors and quick-connect fittings before tightening or snapping them into place,
• verifying for leaks after the initial engine start,
• ensuring no torsional stress or kinks along the working sections of the hose.

Using an original fuel hose facilitates a plug-in installation into the existing system, reducing service time and minimizing the risk of installation errors. This is especially important in vehicles where the fuel system is precisely calibrated with the engine control electronics.

Benefits of Using an Original Fuel Line

Choosing a fuel line specifically designed for Mercedes vehicles with the OM642 engine offers several practical operational benefits:

• maintaining factory fuel flow characteristics across the entire load range,
• reducing the risk of leaks and pressure drops in the system,
• improved compatibility with existing fuel system components,
• enabling a technically correct repair without altering the installation's structure.

For users who wish to maintain their vehicle in a configuration close to its original state, using such a hose is a solution consistent with the manufacturer's intentions. A used part also allows for optimizing service costs while preserving the original structural specifications.

Technical Support and Fuel System Component Selection

When working with diesel fuel systems, it is advisable to consult reliable sources of information regarding diagnostics and component selection. If you want to better understand the relationships between fuel lines, pumps, injectors, and the fuel tank, the article: Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair will be helpful. You will find practical tips on the operation and repair of fuel system components there.

If you are looking for other Mercedes Fuel Tanks or related components in this category for your car, check out the Mercedes Fuel Tanks available in our store to select components that are compatible with your vehicle's fuel system.