Mercedes W177 Window Glass Rear Left N/S Door Glazing Tinted AS3 A1777353100

Mercedes W177 Window Glass Rear Left N/S Door Glazing Tinted AS3 is a factory body component designed for the rear left door of W177 series models. This original window glass ensures precise fitment to the door frame, proper operation with the window regulator mechanism, and maintenance of the factory body rigidity. It is an ideal solution for users looking to restore the full functionality and aesthetics of the side glazing area following a collision, damage, or service procedure.

Specifications and technical data

• SKU: A1777353100
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1777353100
• Substitutable numbers: A1777353100, A 177 735 31 00, BG
• Location on the vehicle: Rear, Left
• Category: Car Glass

Purpose and fitment

The presented window glass is dedicated for installation in the rear left door of vehicles from the Mercedes W177 family. Its placement in the rear part of the body means the component works seamlessly with factory guides, seals, and door fittings, which allows for maintaining cabin tightness, proper water drainage, and stable window movement during opening and closing.

Thanks to the preservation of the original edge geometry and properly shaped surface, the glass ensures correct adhesion to the seals and reduces the risk of wind noise at higher speeds. This is particularly important for post-accident repairs, where restoring factory acoustic and performance parameters is essential.

Technical and functional characteristics

The AS3 side window belongs to the Automotive glass category, meeting high standards for safety and comfort. The production technology used ensures appropriate mechanical strength, resistance to operational stress, and compliance with the homologation standards provided for this model.

The component has been designed to work with the standard rear door window regulator mechanism on the driver's side. The appropriate placement of mounting points and the correct edge profile facilitate installation and reduce the need for additional adjustments. In practice, this translates into:

• stable window movement within the guides,
• proper operation of the lifting and lowering mechanism,
• maintenance of tightness at the contact point with door seals.

Component condition and service application

The offered window glass is a used part, making it an attractive solution for post-accident repairs, replacement after glass breakage, or vehicle restoration, where the priority is to maintain original specifications at a reasonable cost. Using a dismantled part allows for visual consistency with the other windows in the vehicle and reduces the risk of fitment issues typical of low-quality aftermarket replacements.

Before installation, it is recommended to perform a standard inspection of the edges, working surface, and mounting points, as well as to verify compatibility with the service documentation of the specific body version. In case of doubts regarding part selection, OEM markings and interchangeable numbers assigned to this window model can be helpful.

Part selection by OEM numbers and compatibility

When choosing a side window for a Mercedes, it is crucial to match it based on the body generation, installation side, and the type of factory-fitted glazing. Correctly reading the part number and reference numbers helps avoid situations where the glass differs in shape, bending radius, or mounting method.

To minimize the risk of errors when purchasing used components, it is worth using practical tips on verifying OEM and reference numbers – you can find them in the article on professional selection of used car parts and avoiding bad purchases. This is especially useful when completing body components, where even minor structural differences can hinder installation.

Operation and care for the side window

Proper maintenance of the rear door window affects not only aesthetics but also the durability of the seals and the lifting mechanism. It is worth using dedicated automotive glass cleaning agents and avoiding aggressive preparations that may accelerate the wear of rubber components and guides.

If you want to take better care of dismantled components in your car, the guide on how to effectively extend the life of used car parts, which describes practical methods for maintaining body and equipment components, will be helpful.

Summary

Mercedes W177 Window Glass Rear Left N/S Door Glazing Tinted AS3 is an original component designed for the rear left part of the body, ensuring proper fitment, compatibility with factory glazing, and the maintenance of performance parameters intended by the manufacturer. It is a reasonable choice for repairs and replacements when you want to combine technical compliance with the favorable price characteristic of used parts.