Mercedes-Benz Vito Viano W639 Rear Left N/S Quarter Side Window Glass AS2

Mercedes-Benz Vito Viano W639 Rear Left N/S Quarter Side Window Glass AS2 is an original component from the Car windows category, designed for installation in the rear left section of the vehicle body. The glass meets the AS2 standard, which ensures appropriate light transmission and safety parameters, and its dedicated design for Vito and Viano W639 models guarantees a perfect fit to the bodywork.

Specifications and technical data

• SKU: A6396720813
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6396720813
• Substitutable numbers: A6396720813, A 639 672 08 13, BG
• Location on the vehicle: Rear, Left
• Category: Car Glass

Purpose and fitment for Mercedes Vito / Viano W639

The presented window glass is designed as a component for the rear left body section of the Mercedes Vito and Viano W639 generation. Positioning in the side cargo or passenger area requires maintaining precise glass geometry, which is why using an original component allows you to maintain tightness, the correct body line, and stable seating in the frame.

Thanks to its factory-intended design for a specific body series, installation is predictable, without the need for bodywork or seal modifications. This solution is particularly beneficial for accident repairs, fleet renovations, and restoring the vehicle to a condition consistent with the manufacturer's documentation.

Technical characteristics of AS2 glass

The glass marked with the AS2 standard belongs to the group of tempered side windows with specific light transmission, adapted to homologation requirements for windows other than the windshield. This type of glass provides:

• an appropriate level of transparency, essential for visibility in mirrors and during maneuvering,
• a controlled breakage pattern, reducing the risk of large, sharp fragments,
• dimensional stability, important for installation in factory guides and seals.

Selecting glass with parameters compliant with the AS2 standard helps maintain the technical consistency of the vehicle with the solutions provided by the manufacturer, which is important for both safety and subsequent technical inspections.

Condition of the item and use in repairs

The offered glass is a used component, which in practice means the possibility of an economical vehicle repair while maintaining the original manufacturer's specification. In many cases, using original glass from disassembly allows for a better match of the shade and surface character to the other windows in the car than in the case of new aftermarket replacements.

This solution is particularly beneficial for:

• repairs after point damage or side window cracks,
• restoring the car to factory condition after unprofessional modifications,
• servicing commercial vehicles, where the cost-to-functionality ratio is important.

Benefits of using an original used window

Using original glass in a Mercedes Vito or Viano W639 helps maintain the visual and technical consistency of the entire glazing. Proper fitment to factory mounting points reduces the risk of leaks, rattles, or body stresses that may occur with components of imprecise dimensions.

If you care about maintaining the vehicle's value in the long term, it is worth considering the impact of original components on the perceived quality of the car. As the secondary market practice shows, properly selected parts from disassembly can be a favorable compromise between repair cost and maintaining the vehicle's factory character – you can find more on this topic in the article Original used parts vs. resale price – how not to lose money?.

Expanding repairs within Mercedes car windows

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