Mercedes S212 Panoramic Sunroof Sliding Roof Rear Window Glass Panel AS3 Estate

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes S212 Panoramic Sunroof Sliding Roof Rear Window Glass Panel AS3 Estate is an original body component designed for installation in the rear section of the roof with a sunroof function. This used component ensures a factory fit, maintaining proper geometry, sealing, and compatibility with the roof mechanism. It is a practical solution for replacing a damaged rear glass panel of the panoramic roof in an estate body style.

Specifications and technical data

• SKU: A2127801021
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2127801021
• Substitutable numbers: A2127801021, A 212 780 10 21, BG
• Location on the vehicle: Rear
• Category: Other Exterior Parts & Accessories

Purpose and function of the component

The rear glass panel of the panoramic roof in the Mercedes E-Class S212 estate is responsible for illuminating the rear part of the cabin and properly closing the roof space within the sunroof system. The component is mounted in the rear zone of the body, working in conjunction with guides, seals, and the sliding roof cassette.

Replacing this component is recommended in the event of glass breakage, mechanical damage, or leaks that affect acoustic comfort and protection of the interior against weather conditions.

Benefits of using the original glass panel

Using the original rear panoramic roof panel in the Mercedes S212 allows you to maintain:

• factory fitment with the roof frame and seals,
• proper cooperation with the sliding and tilting mechanism,
• appropriate structural rigidity in the rear part of the roof,
• consistent appearance with other glazed body elements.

Thanks to this, after the repair, the roof retains its functionality, and the vehicle's interior remains properly illuminated and protected.

Installation characteristics

The Mercedes S212 Panoramic Sunroof Sliding Roof Rear Window Glass Panel AS3 Estate is adapted for installation at factory mounting points, which facilitates service work and limits the need for additional modifications. The element is dedicated to the S212 estate body, which ensures dimensional compatibility with the roof frame and guide mechanism.

Before installation, it is recommended to verify the completeness of the roof equipment (seals, guides, cassette) and check the correct setting of the mechanism to ensure smooth operation of the entire system after the glass replacement.

Application in service practice

Replacing the rear panoramic roof glass panel is a typical operation in the case of:

• mechanical damage caused by impact,
• cracks resulting from stress or incorrect closing,
• leakage problems in the rear part of the roof.

A used, original component allows for an economical repair while maintaining factory build quality and compatibility with other panoramic roof components.

If you are planning a comprehensive repair or upgrade of the roof area in your Mercedes and need other elements from the same group, such as additional windows, seals, or mounting elements, check the available parts in the Other Mercedes category.

Technical support and knowledge about parts

When selecting body elements and components of increased complexity, such as panoramic roofs, it is worth using reliable sources of knowledge about vehicle construction and differences between equipment versions. A good reference point for understanding manufacturers' approaches to designing drive systems, braking systems, and chassis can be the article Audi RS vs other models – what is hidden under the hood and chassis?, which shows how important structural details are in cars with different specifications.