Mercedes W177 Panoramic Sunroof Sliding Roof Rear Window Glass Panel AS3

Visual condition of the part 

The product shows signs of use visible in the photos. 

Mercedes W177 Panoramic Sunroof Sliding Roof Rear Window Glass Panel AS3 is an original body component designed for the rear section of the roof in W177 series models. This used, factory-original panoramic module ensures structural consistency with the vehicle body, maintaining proper glass guidance and sealing in the rear roof zone. It is a solution for users who expect functional repair while maintaining the factory characteristics of the sunroof operation.

Specifications and technical data

• SKU: A1776570100
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1776570100
• Substitutable numbers: A1776570100, A 177 657 01 00
• Location on the vehicle: Rear
• Category: Other Exterior Parts & Accessories

Purpose and function of the rear panoramic sunroof section

The described component is responsible for the operation of the rear section of the panoramic sliding roof in the Mercedes W177, contributing to the system of guides, seals, and glass mounts. Its placement in the rear of the vehicle allows for proper closing and sliding of the glass panel, as well as maintaining the appropriate rigidity of the entire roof module.

Thanks to the preservation of the original geometry and mounting points, integration with the factory body structure proceeds according to the manufacturer's specifications, which is important for both user comfort and the reduction of noise and vibrations while driving.

Benefits of using an original rear sliding roof component

Using a factory-original component for the rear section of the panoramic sunroof in the Mercedes W177 allows for:

• maintaining proper operation of the sliding mechanism in the rear roof zone,
• preserving compatibility with existing guides and seals,
• reducing the risk of leaks and improper glass closing,
• visual and structural consistency with other body elements.

For workshops and users, this means more predictable installation and the ability to restore the correct operation of the panoramic roof without the need for vehicle structural modifications.

Installation characteristics and service application

The rear panoramic sliding roof element is designed for installation in the rear body zone, in place of the factory module. The design, based on the original Mercedes project, allows for the use of standard mounting points and cooperation with factory roof sub-assemblies.

In service practice, this type of part is used for:

• repairs after mechanical damage to the rear part of the sunroof,
• eliminating leaks resulting from structural deformation,
• restoring full sliding and tilting functionality in the rear roof section.

For vehicles used intensively or after bodywork repairs, this is a solution that allows for a technically correct reconstruction of the roof zone.

Using a used body component in repairs

Choosing a used, original component for the rear section of the panoramic sunroof is often advantageous compared to replacements with uncertain geometry. Factory-perfect fitment to the Mercedes W177 structure promotes the proper operation of the entire roof module and limits the need for additional adjustments.

If you are interested in a broader context regarding the use of used body parts in repairs, it is worth checking out the material discussing the differences between original parts and replacements – you can find it in the article on choosing used body parts for post-accident repairs.

Related categories and technical materials

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

For a comparison of technical solutions used in different brands and sports versions, you can also refer to the article Audi RS vs other models – what is hidden under the hood and chassis?, which discusses, among other things, structural differences in key vehicle systems.