Mercedes W205 Door Window Strip Rear Left N/S Moulding Sealing A2056900380

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W205 Door Window Strip Rear Left N/S Moulding Sealing is a precision body component from the Doors and door panels group, designed specifically for models of this series. It is responsible for the tight guidance of the window and protection of the interior against water, noise, and contaminants, ensuring stable operation of the window lifting mechanism in the rear left area of the vehicle. This solution is dedicated to drivers who want to restore the factory functionality and aesthetics of the side body section.

Specifications and technical data

• SKU: A2056900380-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2056900380
• Substitutable numbers: A2056900380, A 205 690 03 80
• Location on the vehicle: Rear, Left
• Category: Doors & Door Skins

Purpose and function of the sealing strip

The described sealing strip is a component mounted in the rear left part of the body, within the passenger door area. Its tasks include:

• guiding the window in the correct track during opening and closing,
• limiting the ingress of water and moisture into the door interior,
• reducing wind noise at higher speeds,
• protecting the window edge against excessive mechanical wear.

Thanks to its proper profile and fit to the door structure, the Mercedes W205 Door Window Strip Rear Left N/S Moulding Sealing helps maintain acoustic comfort and the stability of the entire window mechanism.

Compatibility with the Mercedes W205 body

The element has been developed with the W205 series body structure in mind, which means it fits the door geometry, window line, and factory mounting points. In practice, this translates into:

• proper adhesion to the door frame and window,
• no need for bodywork or adaptive modifications,
• preservation of the original body line and visual consistency.

Such a fit is particularly important for components from the Doors and door panels group, where even minor deviations can result in leaks or improper window operation.

Characteristics of the used component

The strip comes from dismantling, which means it is a used part that retains its original geometry and purpose. Such components are often chosen for:

• post-accident repairs of the side body section,
• eliminating leaks in the rear door area,
• restoring the correct operation of the window lifting mechanism.

Choosing an original, used component allows for maintaining the structural integrity of the door and reducing the risk of fitment issues typical of universal profile replacements.

Professional installation and application

Due to its location in the rear left part of the vehicle, the strip works directly with the window, door frame, and perimeter seals. During installation, it is worth paying attention to:

• thorough cleaning of the contact surface with the door frame,
• proper seating in the factory guides and clips,
• checking the window operation after installation – smoothness of movement, absence of jams and unwanted noises.

A carefully installed strip helps maintain the proper pressure of the window against the seals, which is important for both driving comfort and protecting the interior from external factors.

Expanding the scope of repair and part selection

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

In case of doubts regarding the selection of the correct sealing strip relative to the body version or equipment, the OEM number and replacement numbers assigned to this reference may be helpful. To streamline the verification process and compare parameters with vehicle data, it is worth using the practical tips contained in the article Guide: how to choose the right car part by VIN and OEM number.

Summary

Mercedes W205 Door Window Strip Rear Left N/S Moulding Sealing is a dedicated body component that supports tightness, acoustic comfort, and proper window operation in the rear part of the vehicle. Using an original design from the Doors and door panels group allows for a technically correct repair of the door zone, while maintaining the factory fit and functionality of the entire system.