Mercedes W221 Long Door Window Glass Rear Right O/S Side AS2 A2217300418

The Right Rear Door Window for Mercedes W221 Long is an original body part designed for the long-wheelbase S-Class luxury sedan. It ensures proper glazing geometry, correct fitment with seals, and stable door closure, contributing to acoustic comfort and passenger safety. A used component allows for an economical yet technically sound repair of the vehicle's side area.

Specifications and technical data

• SKU: A2217300418
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2217300418
• Substitutable numbers: A2217300418, A 221 730 04 18
• Location on the vehicle: Rear, Right
• Part type: Rear Side Window
• Category: Car Glass

Purpose and Fitment

The offered right rear door window has been specifically designed for the Mercedes S-Class W221 generation in its Long version. This part is intended for installation in the rear passenger side of the vehicle, maintaining the factory body line and proper adhesion to seals and guides.

Thanks to its construction conforming to factory standards, the window works seamlessly with the original power window mechanism, door frame, and sealing system, minimizing the risk of leaks, rattles, and improper operation of the window regulator.

Performance Parameters and Role in the Vehicle

As a component within the Automotive Glass category, the right rear door window is responsible for several key operational functions:

• maintaining the appropriate rigidity of the side door area,
• ensuring visibility for rear seat passengers,
• reducing external noise and vibrations transmitted into the interior,
• cooperating with the power window mechanism for raising and lowering the window in the rear door.

A properly selected window helps maintain the visual consistency of the bodywork and also influences the correct functioning of seals and guide strips, which is important for operation in varying weather conditions.

Characteristics of a Used Component

The presented window is a used component, which significantly reduces repair costs compared to a new part, while maintaining the original manufacturer's specifications. In practice, this means:

• factory fitment to the door structure of the Mercedes W221 Long,
• retention of the original curvature and dimensions of the glazing,
• possibility of installation in place of a damaged window without modifying the door structure.

A used part is a good choice for post-accident repairs, replacement due to cracks or scratches, as well as for restoring the vehicle to its original factory specifications.

Benefits of Using an Original Right Rear Window

Using an original right rear door window for the Mercedes W221 Long offers a range of practical benefits:

• High dimensional accuracy – no need for adjustments or modifications during installation.
• Stable cooperation with the existing power window mechanism and seals.
• Reduced risk of leaks, wind noise, and vibrations while driving.
• Consistent appearance of the vehicle's side body, important for body and paint repairs.

For workshops and private users, this translates to shorter installation times and a lower risk of complaints related to improper part fitment.

Selecting a Used Part and Technical Support

When choosing a used window for a Mercedes S-Class, it is important to pay attention to the compatibility of the body, version, and placement on the vehicle. Comparing markings on the window and matching by part numbers and vehicle data can be helpful. If you want to better understand the differences between original, aftermarket, and used parts and assess the cost-effectiveness of your purchase, check out the article: Original, Aftermarket, or Used – Which Car Parts Are Most Cost-Effective?

If you are planning a comprehensive repair or upgrade of the side glazing area in your Mercedes and need other parts from the same group, such as front glass, side glass, or rear glass, check the available parts in the Mercedes Automotive Glass category.