Fuel Filter Pipe Mercedes W204 W212 OM642 Connecting Line Rail A6420700332

The Mercedes W204 W212 OM642 Fuel Line Hose is an original part of the fuel supply system, designed for OM642 diesel engines in Mercedes W204 and W212 models. Thanks to its factory geometry and precise fit for the specific engine unit, it ensures stable fuel delivery and proper cooperation with other system components. This is a practical solution for users who expect consistency with the factory design and want to maintain the engine's performance parameters in line with the manufacturer's specifications.

Specifications and technical data

• SKU: A6420700332-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420700332
• Substitutable numbers: A6420700332, A 642 070 03 32
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and Function in the Fuel System

The fuel hose described belongs to the Lines, Hoses, and Tubes category and is responsible for the precise delivery of diesel fuel in the engine's fuel supply system for diesel engines. In OM642 units, the correct routing and sealing of fuel lines are crucial for:

• maintaining adequate pressure in the fuel supply system,
• stable operation of injectors and the high-pressure pump,
• reducing the risk of leaks and air ingress into the system,
• maintaining engine smoothness and proper cold starts.

Being dedicated to diesel engines, the hose is adapted to the operating characteristics of a diesel unit, including the pressure loads and thermal conditions typical for these types of powertrains.

Compatibility with Mercedes W204 and W212 with OM642 Engine

The fuel hose has been specifically designed for the engine bay architecture of Mercedes W204 and W212 models equipped with the OM642 unit. This means that:

• the hose's geometry is adapted to the factory routing in the engine bay,
• mounting points and connections match the factory solutions,
• no modifications to other fuel system components are required during installation.

This allows the part to be used for standard replacement of worn hoses, as well as for repairs related to leaks or fuel system upgrades during servicing.

Technical Characteristics and Benefits of Use

As an original Mercedes part, the fuel hose maintains parameters consistent with the vehicle manufacturer's factory requirements. In practice, this translates to:

• adequate resistance to operating pressure in the diesel system,
• compatibility with sealing materials used in factory connectors,
• proper fuel delivery without undesirable kinks or stresses.

Choosing an original hose from this component group helps reduce the risk of operational problems such as leaks, pressure drops, or unstable engine operation under load. This is particularly important in modern diesel engines where the fuel system operates under demanding conditions.

Component Condition and Service Application

The offered fuel hose is a used part, making it an attractive cost-effective alternative to new components while maintaining compliance with the factory design. This type of solution is often chosen for:

• routine fuel system repairs,
• workshops specializing in OM642 units,
• projects aimed at restoring full functionality to vehicles with operational mileage.

When selecting a part, it is advisable to pay attention to compatibility with the specific engine version and fuel system configuration of the particular vehicle to ensure full functionality and sealing of the installation.

System Expansion – Other Hoses and Tubes for Mercedes

If you are planning a comprehensive repair or engine bay upgrade for your Mercedes and need other parts from the same category, such as additional supply lines, return pipes, or flexible connecting sections, check the available parts in the Mercedes Lines, Hoses, and Tubes category.

Expert Support in Selecting Used Components

When working with powertrain and fuel systems, many users also consider using used components such as engines or transmissions. To better understand the principles of safely selecting parts by OEM numbers and the real cost benefits, it is worth consulting an expert guide: Why Buying Used Transmissions and Engines is Worthwhile – Facts Instead of Myths. This will allow you to plan repairs consciously and optimize your service budget without compromising on quality.