Mercedes W164 OM642 Fuel Injection Line Pressure Pipe Rail Line A6420700033

Mercedes W164 OM642 Fuel Line A6420700033 is an original part from the Hoses, Tubes, and Lines category, designed for the fuel supply system in Mercedes vehicles with the OM642 engine. A used OEM fuel line ensures proper medium flow, stable pressure, and safe operation of the injection system in daily use.

Specifications and technical data

• SKU: A6420700033-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420700033
• Substitutable numbers: A6420700033, A 642 070 00 33
• Category: Hoses, Lines & Pipes

Application and Function of the Fuel Line

The Fuel line for Mercedes W164 with OM642 engine is responsible for precisely delivering fuel between components of the supply system, minimizing pressure drops and the risk of leaks. A properly selected, original line supports:

• stable operation of the injection system across the full load range,
• correct fuel metering during startup and while driving,
• maintaining the fuel system's integrity within the engine bay.

Thanks to its construction conforming to manufacturer standards, the line is tailored to the geometry of the OM642 engine and the W164 body installation, which reduces stress and vibrations during engine operation.

Original Origin and Compatibility

This part comes from the Mercedes line, meaning it retains factory parameters for flow, diameters, and mounting methods. Original manufacturing translates to:

• secure fit with factory brackets and connectors,
• compliance with the OM642 fuel system's pressure requirements,
• easier installation without the need for system modifications.

This type of fuel line is particularly recommended for repairs where maintaining the engine's factory performance characteristics and minimizing the risk of leaks in high-temperature areas are crucial.

Condition, Safety, and Operational Aspects

The product is used, allowing for economical repair while maintaining the original manufacturer's specifications. The fuel line, as a component operating in a demanding thermal and pressure environment, should be free from cracks, deformations, and visible connector damage – a standard visual and leak check in a workshop is recommended before installation.

Replacing the fuel line with an original component is important for:

• fire safety within the engine bay,
• maintaining correct fuel pressure,
• reducing fuel odors and potential leaks.

Benefits of Using an Original Fuel Line

Using an OEM fuel line in a Mercedes W164 with an OM642 engine allows for the preservation of the engine's factory operating parameters. Key benefits include:

• factory fit for the Mercedes fuel supply system,
• appropriate resistance to temperature and vibrations in the engine bay,
• maintenance of the correct line routing geometry, which reduces the risk of abrasion.

For vehicles used intensively or with higher mileage, replacing the fuel line with an original part is a sensible investment in engine stability and driving comfort.

If you are looking for other Hoses, Tubes, and Lines dedicated to this brand, check out the available Mercedes Hoses, Tubes, and Lines in our store to select installation components for a specific model and engine version.

For drivers interested in informed vehicle operation and cost optimization for repairs, we also recommend the guide article When is it Worth Replacing an Alternator with a Used One: A Practical Guide for Drivers, which helps assess when the use of used components is technically justified.