Mercedes Viano Vito W639 Rear Door Left N/S Window Glass Quarter AS2 A6396721413

Mercedes Viano Vito W639 Rear Door Left N/S Window Glass Quarter is an original component from the Car windows category, designed for installation in the rear part of the body on the driver's side. The used AS2-type glass ensures the appropriate level of light transmission and safety, while maintaining the factory look and stylistic consistency of the Mercedes vehicle.

Specifications and technical data

• SKU: A6396721413
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6396721413
• Substitutable numbers: A6396721413, A 639 672 14 13
• Location on the vehicle: Rear, Left
• Category: Car Glass

Purpose and body fitment

The presented glass is dedicated to the rear body zone on the left side in Mercedes Viano and Vito models of the W639 generation. The rear side quarter window design allows for precise fitment to the factory door frame, which facilitates installation and reduces the risk of leaks. The use of AS2-grade glass means compliance with homologation requirements regarding visibility and passive safety.

AS2 glass characteristics

Glass marked with the AS2 grade is commonly used in side and rear windows of vehicles because it combines good light transmission with protection against excessive interior heating. This type of glass:

• ensures proper visibility in the rear part of the vehicle,
• meets safety standards for side and rear windows,
• maintains the consistent, factory character of the glazing in the Mercedes Viano/Vito W639.

Benefits of using original used glass

Choosing used OEM glass for a Mercedes allows you to maintain factory fitment and body geometry, which is particularly important during post-collision repairs or when replacing damaged glazing elements. The original rear left glass:

• fits factory mounting points and seals,
• reduces the need for bodywork or upholstery modifications,
• facilitates maintaining body tightness against water and noise.

The used condition allows for a significant reduction in repair costs compared to new components, while maintaining functionality and compatibility with the vehicle's design.

Practical installation and maintenance tips

When replacing the rear left glass in a Mercedes Viano/Vito W639, it is worth paying attention to the proper preparation of the contact surface and checking the condition of seals and mounting strips. Careful installation:

• minimizes the risk of wind noise while driving,
• prevents moisture from entering the interior,
• maintains the stability of the glass in the door frame during operation.

Due to the nature of the component, installation in a specialized service center or using appropriate tools and sealing materials is recommended.

If you want to better understand how to wisely choose used body and glazing components and how to evaluate their cost-effectiveness compared to new parts, read the guide Used parts – Your guide to the best offers in the automotive store, which discusses the practical aspects of purchasing components from the secondary market.

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

In a situation where you want to further optimize service costs while maintaining OEM quality, it is also worth familiarizing yourself with the market analysis of used components in the article Rising repair costs and the boom in used parts – how to save on car service?, which shows how to consciously plan repairs using proven used parts.