Mercedes W212 Door Window Frame Rear Left N/S Trim Cover Panelling A2127350371

The Mercedes W212 Rear Left Door Window Frame is a precise body component from the Doors and Door Panels group, designed for installation in the rear left part of the vehicle. The black frame ensures proper window guidance and support, contributing to the sealing, stability, and aesthetics of the vehicle's side body area. A used OEM component is a sensible choice for professional repair or replacement of a damaged frame in a Mercedes E-Class W212 generation.

Specifications and technical data

• SKU: A2127350371
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2127350371
• Substitutable numbers: A2127350371, A 212 735 03 71, EM
• Location on the vehicle: Rear, Left
• Color: Black
• Category: Doors & Door Skins

Purpose and Function of the Window Frame

The rear left window frame is responsible for the stable seating of the glass pane in the door, the correct operation of the lifting mechanism, and maintaining the proper geometry of the seals. In a premium vehicle like a Mercedes, the correct fit of this component is crucial for:

• reducing wind noise at higher speeds,
• maintaining a seal at the junction of the window, seals, and door panel,
• proper window guidance in the tracks during opening and closing.

The component is installed in the rear section, on the left side, allowing for direct replacement of a damaged frame without affecting other doors.

Construction, Color, and Fitment

The black color of the frame integrates well with the factory door finish, both in versions with dark and lighter trim strips. This preserves the visual consistency of the vehicle's side profile, and replacing the component does not cause aesthetic disruptions. The original geometry ensures proper adhesion to the door structure and compatibility with standard seals and glass.

As a part of the Doors and Door Panels group, the frame works in conjunction with the internal door structure, the window lifting mechanism, and the outer panel, creating a stable and functional system.

Service Application and Benefits of Installation

Replacing the window frame is recommended in cases of deformation after a collision, corrosion in the guide area, or problems with smooth window operation. Using a used OEM part allows for:

• restoring proper window operation in the rear left door,
• reducing unwanted vibrations and rattles in the door area,
• maintaining the factory fit and body line characteristic of the Mercedes W212.

Proper fitment for the specific model minimizes the risk of installation problems and reduces service time, which is important for both workshops and individual users.

Integration with Other Mercedes Door Components

The frame interacts with the glass, seals, lifting mechanism, and door panel, so when repairing the side body of the vehicle, it should be considered an essential part of the entire system. If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other parts from the same group, such as panels, reinforcements, or additional profiles, check the available parts in the Mercedes Doors and Door Panels category.

Summary

The Mercedes W212 Rear Left Door Window Frame is a practical solution for users and service centers aiming to restore proper window operation and the aesthetic appearance of the side body after mechanical damage. A used OEM part with a black finish helps maintain the distinctive look of the Mercedes E-Class while providing solid window support and compatibility with factory door components.