Side Window Mercedes Vito W639 Front Right O/S Fixed Triangle Glass AS2

Visual condition of the part

The product shows signs of use visible in the photos.

Side Window Mercedes Vito W639 Front Right O/S Fixed Triangle Glass AS2 is a factory-original component from the Car windows group, designed for installation in the front right section of the vehicle body. A properly selected triangle glass stabilizes the door frame, improves side visibility, and contributes to acoustic comfort inside the vehicle.

Specifications and technical data

• SKU: A6396736805-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6396736805
• Substitutable numbers: A6396736805, A 639 673 68 05, A6396735005, A 639 673 50 05
• Location on the vehicle: Front, Right
• Category: Car Glass

Purpose and function of the triangle glass

The presented triangle glass has been designed specifically for the Mercedes Vito W639 model, taking into account the body geometry and the characteristics of the A-pillar. Its placement in the front-right zone ensures proper door sealing, door frame stabilization, and correct airflow around the cabin.

The AS2 marking indicates the appropriate light transmission and safety class, which translates into driving comfort and compliance with homologation requirements for side windows. As a result, the glass works perfectly with factory seals and moldings, reducing cabin noise and vibrations at higher speeds.

Benefits of using original Mercedes glass

Choosing an original triangle glass for the Mercedes Vito W639 primarily ensures a perfect fit to the body and maintains the factory styling line. The shape, thickness, and edge profile are tailored to the door construction, which facilitates installation and minimizes the risk of leaks.

• stable seating in the door frame thanks to precisely selected dimensions,
• proper compatibility with factory seals and mounts,
• maintaining a consistent look of the side body section,
• preservation of safety parameters specified by the manufacturer.

For commercial vehicles like the Vito, this is important both in daily operation and during future resale – maintaining original glass components is perceived as a technical advantage.

Technical installation characteristics

The front right triangle glass is a fixed element, mounted in the door or pillar area, without an opening function. This solution improves the rigidity of the side structure and limits bodywork stress during operational loads. Properly installed glass:

• maintains the correct geometry of the door frame in the mirror and pillar zone,
• reduces the risk of rattles and squeaks resulting from bodywork movement,
• supports the tightness of the door system against water and air.

The item comes from dismantling, which allows for maintaining factory parameters while optimizing repair costs. For many users, this is a reasonable compromise between quality and service budget.

Why choose original used glass components

Using original glass from dismantling is often more beneficial than installing random aftermarket replacements, especially in Mercedes-class vehicles. You receive a part designed for a specific model, maintaining the manufacturer's standards regarding safety, rigidity, and acoustics. This is a solution that allows you to maintain the technical consistency of the vehicle, which is also important for the car's future valuation.

If you want to better understand the impact of such service decisions on vehicle value, check out the article Original used parts vs. car resale price – how not to lose money?, which discusses the practical aspects of selecting components from the secondary market.

Expanding the scope of work regarding windows

If you are planning a comprehensive repair or upgrade of the side glazing area in your Mercedes and need other elements from the same group, such as side door windows, additional triangle glasses, or sliding glass elements, check the available parts in the Mercedes car windows category.