Mercedes Vito Viano W639 Front Windscreen Wiper Linkage System A6398200040

Mercedes Vito Viano W639 Front Windscreen Wiper Linkage System is a factory-original component of the windscreen cleaning system, designed for installation in the front area of the vehicle. The original design ensures the correct operating geometry of the wiper arms, stable pressure of the blades against the glass, and predictable performance in all weather conditions. It is a practical solution for users who want to restore proper wiper operation without experimenting with random aftermarket replacements.

Specifications and technical data

• SKU: A6398200040
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6398200040
• Substitutable numbers: A6398200040, A 639 820 00 40, A6398200140, A 639 820 01 40
• Location on the vehicle: Front
• Category: Wiper Arms

Purpose and function of the wiper linkage system

The presented mechanism is the component responsible for transferring drive from the wiper motor to the arms operating on the windscreen. Properly selected pivot points and structural rigidity translate into smooth arm movement and effective removal of water, mud, and debris from the driver's field of vision. As a result, the wiper system maintains correct kinematics, and the windscreen remains clear even during heavy rainfall.

Construction and fitment for Mercedes Vito / Viano W639

The Mercedes Vito Viano W639 Front Windscreen Wiper Linkage System has been designed specifically for the geometry of the front body section of this model. This means correct axis positioning, alignment with factory mounting points, and compatibility with standard wiper arms. Using the original design allows for maintaining the manufacturer-intended range of motion, sweep angle, and resting position of the arms.

The component is installed in the cowl area, in the front zone of the vehicle, which facilitates service and inspection of the system's condition. Utilizing a factory solution reduces the risk of play, incorrect arm alignment, or premature blade wear.

Benefits of using the original mechanism

Using the original wiper linkage system in a Mercedes Vito / Viano W639 provides a number of practical benefits in daily operation:

• maintenance of the correct wiper operating area on the windscreen,
• stable cooperation with factory arms and blades,
• reduction of vibration and noise during system operation,
• easier diagnostics and service due to compliance with the factory design.

For fleet users and workshops, installation repeatability is also important – the original mechanism allows for quick restoration of system efficiency without the need for body or mount modifications.

Characteristics of the used product

The offered wiper linkage system is a used component, which represents a reasonable compromise between repair costs and maintaining factory build quality. This type of solution is particularly attractive for maintenance repairs when the priority is to efficiently restore system functionality while maintaining compliance with the manufacturer's original design. Choosing a used OEM component allows you to reduce the risks typical of cheap aftermarket replacements of uncertain origin.

Technical support and additional information

In case of doubts regarding the selection of the mechanism for a specific body version or model year, it is worth paying attention to the manufacturer's markings and the placement of the component in the vehicle. Proper identification facilitates installation and minimizes the risk of incompatibility with the existing wiper system.

If you are planning a comprehensive repair or upgrade of the windscreen visibility zone in your Mercedes and need other components from the same group, such as arms, mounts, or drive transmission elements, check the available parts in the Mercedes Wiper Arms category.

For a broader perspective on the cost-effectiveness of using original used components in key vehicle systems, you can read the article Humming differential? Find out why a used OEM drive axle is a better investment than an uncertain replacement, which discusses the practical aspects of choosing OEM parts in the context of durability and operating costs.