Mercedes W221 Window Glass Rear Door Left N/S Quarter Green AS2 A2217300120

The Mercedes W221 Rear Left Door Window AS2 is an original window from the automotive glass category, designed for installation in the rear left door of a luxury sedan. This component ensures proper clarity, body fit, and visual consistency with the vehicle's other windows.

Specifications and technical data

• SKU: A2217300120
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2217300120
• Substitutable numbers: A2217300120, A 221 730 01 20, KD
• Location on the vehicle: Rear, Left
• Color: Green
• Category: Car Glass

Intended Use and Body Fitment

The presented window has been specifically designed as a component for the rear left door panel of the Mercedes S-Class W221 generation. This ensures correct curvature, body line, and compatibility with factory guides, seals, and the window lifting mechanism.

The placement on the vehicle, identified as rear – left side, allows for unambiguous identification of the installation position and reduces the risk of error when selecting the part during accident repair or routine replacement.

Glass Characteristics and Color

This window belongs to the automotive glass category, meaning it meets the requirements for mechanical resistance and clarity necessary for road use. The AS2 designation indicates the type of glass used in vehicle side windows, providing an appropriate level of light transmission and user safety.

The glass color, described as green, matches the standard tint used in many Mercedes W221 models. This maintains visual consistency with the other windows and provides the vehicle's interior with pleasant, slightly tinted lighting conditions, enhancing driving comfort on sunny days.

Item Condition and Benefits of Choosing Used Parts

The window is offered as a used item, allowing for economical vehicle repair while maintaining the original origin of the component. In practice, this means:

• factory fit to the door frame and seals,
• retention of the original glass geometry,
• consistent shade compared to other windows in the vehicle (when selected from the same specification).

For many users, choosing a used window is a sensible compromise between repair cost and maintaining high-quality materials and compliance with original manufacturer standards.

Selection by OEM Number and Compatibility Verification

This door window has an assigned OEM part number and interchangeable numbers, which facilitates precise identification in manufacturer catalogs and service systems. When selecting a part for a specific vehicle, it is advisable to use the VIN and part number to confirm full compatibility with the body version, year, and equipment.

If you want to check step-by-step how to correctly select a part by OEM number and VIN, the following guide will be helpful: Guide: How to Select the Right Car Part by VIN and OEM Number. You will find practical tips, a list of questions for the seller, and a parameter verification diagram.

Practical Application and Installation

The rear left window for the Mercedes W221 is designed for installation in factory mounting points, using original or aftermarket guides and seals. Due to the maintained correct geometry, installation proceeds predictably for an experienced body shop or a specialized glass replacement workshop.

In practice, replacing a damaged window with an original used part allows for:

• restoring the full functionality of the window lifting mechanism,
• maintaining body seal and proper acoustic insulation,
• preserving the aesthetic of the vehicle's side profile at a level consistent with the manufacturer's design.

Other Mercedes Automotive Glass and Knowledge about Used Parts

If you are also looking for other Mercedes automotive glass for your car, check out our dedicated category: Mercedes Automotive Glass. There you will find a wide selection of parts tailored to various models of this brand.

If you have any doubts regarding the selection of parts from the secondary market, it is worth reading the article explaining the most common concerns and beliefs: Used Car Parts: Myths and Facts You Need to Know. This will allow you to consciously assess the advantages of using original used components in the vehicle repair process.