Mercedes CLS W218 Window Glass Rear Door Left N/S Quarter Green AS2 A2187302300

Mercedes CLS W218 Window Glass Rear Door Left N/S Quarter Green AS2 in green (Green AS2) is an original body component from the Car Windows category, designed for installation in the rear left door. This used window is a functional solution for post-accident repairs, replacing a damaged pane, or restoring full sealing and acoustic comfort in a Mercedes CLS W218.

Specifications and technical data

• SKU: A2187302300
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2187302300
• Substitutable numbers: A2187302300, A 218 730 23 00
• Location on the vehicle: Rear, Left
• Color: Green
• Category: Car Glass

Purpose and body fitment

The presented window is designed for installation in the rear left part of the body, in the passenger door area on the driver's side. This positioning ensures proper cooperation with the guides, window regulator, and factory seals, which translates into stable movement of the pane during opening and closing.

Its original Mercedes origin promotes precise fitment with the door frame, reduces the risk of unwanted stress in the glass, and facilitates installation without the need for additional bodywork modifications or adjustment of mounts.

Glass characteristics and user comfort

The window is made of AS2-grade tempered glass in green, which means a pleasant, slightly tinted shade that improves the visual comfort of passengers. This type of glass helps limit interior heating and reduces glare, which is particularly noticeable when driving on sunny days.

The appropriately selected thickness and structure of the pane support the acoustic insulation of the cabin, reducing the penetration of wind noise and ambient noise. As a result, the rear part of the interior remains quieter, which improves travel comfort on longer journeys.

Benefits of using an original used window

Using an original, used window in a Mercedes CLS W218 allows you to combine cost-effectiveness with the preservation of factory fitment parameters. This type of component:

• maintains the body styling line consistent with the manufacturer's design,
• ensures compatibility with factory seals and the lifting mechanism,
• reduces the risk of leaks and improper window operation after installation.

For users who want to consciously choose original components, a guide on the importance of OEM parts will be useful – you can find it in the article Quality assurance and OEM safety – why are used original car parts the best choice for your car?.

Installation and maintenance tips

When replacing the rear left window in a Mercedes CLS W218, it is worth paying attention to the condition of the guides, seals, and the lifting mechanism. Correct positioning of the window in the door frame minimizes the risk of rattling, jamming, and leaks during rain or vehicle washing.

Due to the nature of tempered glass, installation in a workshop environment or by an experienced mechanic is recommended, which helps avoid point stress and accidental damage to the pane. A properly performed replacement restores full functionality of the window opening and closing, as well as the aesthetic appearance of the side body section.

Repair zone expansion and additional information

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 side door windows, quarter glass, or additional panes in the rear part of the body, check the available parts in the Mercedes Car Windows category.

In the summer, when the temperature inside the vehicle rises significantly, the condition of the windows and the efficiency of the engine cooling system have a major impact on driving comfort. It is worth reading the guide on operation in high temperatures: Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, to better take care of the entire vehicle, not just the glazing elements.