Mercedes W639 W906 OM646 Diesel Fuel Injector Pressure Rail Line A6460700695

Mercedes W639 W906 OM646 Diesel Fuel Rail A6460700695 is a fuel supply system component designed for diesel engines used in popular Mercedes van models. A used fuel rail allows for an economical yet technically correct repair of the common rail system in vehicles with the OM646 unit.

Specifications and technical data

• SKU: A6460700695
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6460700695
• Substitutable numbers: A6460700695, A 646 070 06 95, 0445214109, 0 445 214 109
• Fuel type: Diesel
• Category: Fuel Injectors

Purpose and Role in the Injection System

The fuel rail in a Diesel engine plays a crucial role in the common rail system – it stabilizes fuel pressure and distributes it to individual injectors. In the case of OM646 units used in Mercedes W639 and W906 series, a properly functioning fuel rail is essential for maintaining smooth engine operation, correct fuel delivery, and reducing smoke and power loss.

The offered fuel rail is a used part, which allows for maintaining compatibility with the original fuel supply system configuration. For many commercial vehicle users, this is a sensible service solution, enabling the restoration of the injection system's functionality at a controlled cost.

Benefits of Using a Mercedes OM646 Fuel Rail

Using an original fuel rail in an OM646 engine brings a number of practical operational benefits:

• Fuel pressure stabilization across the entire engine load range, contributing to smooth engine operation.
• Proper injector supply, reducing the risk of uneven idling and jerking during acceleration.
• Improved Diesel engine refinement by maintaining manufacturer-specified parameters.
• Economical repair option for the injection system in vehicles used intensively in transport and services.

For workshops specializing in servicing Mercedes vans, using such a fuel rail means predictable installation and compatibility with the existing fuel system.

Condition and Service Application

The fuel rail is offered as a used part, which in workshop practice often represents a sensible compromise between cost and functionality. Such components are frequently used for:

• Common rail system repairs after injector or high-pressure pump failure,
• Comparative diagnostics when there is suspicion of leaks or problems with maintaining fuel pressure,
• Restoring the original configuration in vehicles after incorrect previous repairs.

Due to the specific nature of diesel engine operation, a correctly selected fuel rail directly impacts the durability of other fuel supply system components.

Technical Support and Diesel System Knowledge

When working with fuel rails and injectors, it is beneficial to know the typical symptoms of wear in common rail system components. If you want to better understand failure symptoms and their consequences, check out the guide Diesel Injector Failures – How to Recognize Them and What Neglecting Them Entails, which discusses symptoms, effects, and basic diagnostics.

Other Mercedes Injector Nozzles

If you are looking for other Mercedes injector nozzles for similar service applications, check out the Mercedes injector nozzles available in our store, which will help you select compatible components for a specific model and engine version.