Mercedes W221 Front Door Side Window Glass Left N/S AS2 A2217201518

Mercedes W221 Front Door Side Window Glass Left N/S is an original component from the Car windows category, designed for installation on the driver's side in the front door. This used OEM component ensures a proper fit to the bodywork, correct operation of the lifting mechanism, and appropriate transparency, which translates into safe and comfortable vehicle operation.

Specifications and technical data

• SKU: A2217201518
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2217201518
• Substitutable numbers: A2217201518, A 221 720 15 18
• Location on the vehicle: Front, Left
• Category: Car Glass

Purpose and fitment

The offered window is designed specifically for the front left door of the Mercedes S-Class W221 generation. Thanks to its factory geometry and correct edge profile, it maintains a proper seal against door gaskets and works correctly with the guides and window regulator. Such a fit reduces the risk of wind noise, leaks, and improper mechanism operation.

Technical characteristics of the window

This is an AS2 type side window, which means it meets the appropriate level of tinting and light filtration required for side windows in passenger vehicles. The construction ensures:

• adequate impact resistance during daily use,
• dimensional stability, facilitating installation in factory guides,
• optical comfort thanks to the preservation of transparency and the correct glass color.

By maintaining the manufacturer's standards, the window works with factory gaskets, moldings, and the lifting mechanism, which facilitates installation and subsequent adjustment.

Application in the side body zone

The front left side window has a significant impact on acoustic comfort, protection against weather conditions, and the ergonomics of using the driver's door. A correctly selected component:

• ensures proper closing and guiding of the window throughout its entire range of motion,
• limits the penetration of water and contaminants into the door interior,
• supports the maintenance of appropriate rigidity of the side body zone.

Choosing an original window for the Mercedes W221 allows you to maintain visual consistency with the vehicle's other windows and uphold the performance parameters intended by the manufacturer.

Condition, origin, and benefits of choosing a used component

The offered window is a used component, which represents a favorable compromise between quality and repair cost. Compared to non-factory replacements, the original window from dismantling:

• retains factory curves and dimensions,
• is compatible with original door equipment,
• allows for reducing the cost of restoring full functionality to the driver's door.

For workshops and individual users, this means faster installation, fewer adjustment corrections, and predictable behavior of the component after installation.

Support with selection and additional information

When selecting a side window for a Mercedes W221, it is worth paying attention to the installation side, body type, and compatibility with door equipment. In case of doubt, it is helpful to compare the shape and mounts with the removed window or consult a mechanic specializing in the Mercedes brand.

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 rear side windows, passenger door windows, or additional glazing, check the available parts in the Mercedes car windows category.

For drivers interested in a broader perspective on the operation and selection of used components, it is worth reading the guide on our blog: Used car parts for Mini Cooper – a way for style and savings, which discusses practical aspects of choosing parts from the secondary market and can also be helpful when making decisions regarding body components for other brands.