Mercedes W251 Quarter Glass Door Rear Right O/S Window AS3 Triangle A2517300455

Mercedes W251 Quarter Glass Door Rear Right O/S Window AS3 Triangle is an original body component from the Car windows category, designed for installation in the rear right section of the vehicle. Thanks to its factory-fit design for the Mercedes structure, it ensures a consistent look for the side body line and proper compatibility with seals and the door frame. This is a practical solution for users who want to restore the full functionality and aesthetics of the side glazing area after the original glass has been damaged.

Specifications and technical data

• SKU: A2517300455
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2517300455
• Substitutable numbers: A2517300455, A 251 730 04 55
• Location on the vehicle: Rear, Right
• Category: Car Glass

Purpose and body fitment

The offered triangle glass is dedicated to the rear right section of the Mercedes W251 body, where it serves as a fixed window in the door area. The design has been engineered for the specific geometry of the door frame, which translates into:

• precise fitment to seals and body components,
• stable seating in the frame without stress,
• preservation of the vehicle's factory side line.

As a result, after installation, the glass forms a cohesive unit with the other glazing elements, without the need for additional modifications or adjustments.

Technical characteristics of the glass

The Mercedes W251 Quarter Glass Door Rear Right O/S Window AS3 Triangle is made of appropriately selected automotive glass, adapted for use in the side body area. This solution ensures:

• adequate resistance to operational loads in the door area,
• compatibility with factory seals and trim strips,
• proper transparency and clarity of side visibility.

As an OEM part, the glass is ready for installation in the factory location, which facilitates work for a body shop or a service center specializing in glass replacement.

Condition, origin, and use in repairs

The item comes from dismantling and is offered as a used part, which allows for cost-effective vehicle repair while maintaining the manufacturer's original specifications. This type of glass is particularly useful in situations where:

• the side glazing area has been damaged as a result of a collision or vandalism,
• it is necessary to replace only the triangle glass without interfering with other door components,
• maintaining the factory look and compatibility with other windows in the vehicle is a priority.

Choosing an original, used glass allows you to reduce repair costs while maintaining compliance with factory installation and fitment standards.

Benefits of using original Mercedes glass

Using the original Mercedes W251 Quarter Glass Door Rear Right O/S Window AS3 Triangle brings a number of practical benefits. The most important include:

• factory fitment to the door structure – no issues with geometry or closing,
• consistent look of the side body section with the other windows,
• easier installation for the service center thanks to the preservation of original specifications.

For users who prioritize compliance with the manufacturer's design, this is a solution that allows the vehicle to be restored to full visual and functional efficiency after body repairs.

More windows for Mercedes and knowledge about parts from dismantling

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 side door windows, additional triangle inserts, or other glazing formats, check the available parts in the Mercedes car windows category.

If you want to better understand how to effectively use used body elements and when it is worth reaching for parts from dismantling, read the article Replacing body parts with used ones – can body parts from dismantling look like new?, which discusses the practical aspects of selecting and installing such components in popular models, including Mercedes vehicles.