Mercedes W164 W203 W204 W212 OM642 Diesel Fuel Tank Line Pipes A6420702732

Mercedes W164 W203 W204 W212 OM642 Fuel Line A6420702732 is an original diesel fuel supply system component, designed for installation in the front section of Mercedes vehicles with the OM642 engine. Thanks to its factory fit and adherence to manufacturer specifications, it ensures stable fuel delivery and proper cooperation with other system components. This is a solution for users who expect reliable compatibility with Mercedes construction without the need for modifications.

Specifications and technical data

• SKU: A6420702732-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420702732
• Substitutable numbers: A6420702732, A 642 070 27 32
• Location on the vehicle: Front
• Fuel type: Diesel
• Category: Fuel Tanks

Purpose and Role in the Fuel System

The fuel line in the OM642 diesel engine is responsible for the controlled transport of diesel fuel between the fuel supply system components in the front of the vehicle. A correctly selected component:

• maintains the fuel line's seal under typical operating conditions of a diesel engine,
• supports stable injection and pump operation,
• reduces the risk of pressure drops and leaks in the critical engine compartment area.

Thanks to its construction compliant with Mercedes requirements, the line works with the fuel system designed for the OM642 engine, which contributes to maintaining the original operating parameters of the diesel engine.

Compatibility with Mercedes Models

The offered fuel line is intended for use in Mercedes W164, W203, W204, and W212 class vehicles equipped with the OM642 diesel engine. Using an original solution in these models allows for:

• maintaining the fuel system's consistency with the manufacturer's design,
• minimizing the risk of installation problems,
• ensuring correct routing of the line in the front section of the engine compartment.

Selecting the component according to manufacturer markings facilitates service and diagnostics, and also allows for maintaining consistency with Mercedes technical documentation.

Technical Characteristics and Installation

The fuel line is designed to work with Diesel fuel, meaning it is adapted to the pressures, temperatures, and properties of diesel fuel in the OM642 engine. Its placement in the front of the vehicle requires maintaining proper routing and geometry to:

• avoid excessive stress during engine operation,
• ensure collision-free routing relative to other components,
• maintain proper support and mounting at factory points.

By using an original fuel line, the service technician receives a component prepared for installation in existing brackets and guides, which reduces work time and the need for adjustments.

Why Choose a Used OEM Fuel Line

For diesel fuel supply systems, many users opt for used OEM parts to maintain the original system design. A used Mercedes fuel line:

• retains the original geometry and mounting points intended by the manufacturer,
• is adapted to the specific operating characteristics of the OM642 engine,
• allows for economical repair while maintaining compliance with the factory design.

If you want to better understand how to select fuel system components by manufacturer markings and how they affect durability and operation, the article Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair will be helpful, offering practical tips on diagnostics and parts selection.

Additionally, when deciding between a used part and an aftermarket replacement, it's worth reading the material 5 Reasons Why a Used OEM Part is a Better Choice Than an Aftermarket Replacement, which describes the specific benefits of choosing original components.

Expanding the Fuel System in a Mercedes

If you are planning a comprehensive repair or upgrade of the fuel system area in your Mercedes and need other parts from the same group, such as supply lines, return lines, or connection elements, check the available parts in the Mercedes Fuel Tanks category.