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 precisely fitted body component designed for the rear left door window in Mercedes W205 series models. It is responsible for guiding the window securely, reducing noise, and protecting the interior from moisture and contaminants, ensuring the stable operation of the window lifting mechanism.

Specifications and technical data

• SKU: A2056900380
• 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 window strip seal

The described window strip seal is a component from the Doors and door panels group, mounted on the rear left part of the body. Its function is to:

• provide stable window guidance within the door channel,
• limit the ingress of water and dust into the door interior,
• reduce wind noise while driving,
• protect the window edge from excessive wear.

Thanks to its proper profile, the seal works in harmony with the W205 door structure, supporting the correct operation of the window regulator and maintaining acoustic comfort in the cabin.

Compatibility with Mercedes W205

The moulding has been designed specifically for the W205 platform, which means its geometry, mounting points, and edge shape are matched to the factory door construction. The placement on the vehicle, defined as rear – left side, allows for clear identification of the correct mounting position and helps avoid errors when selecting the part.

Such a fit translates into:

• proper adhesion to the door frame and window,
• no need for modifications or forced fitting,
• maintenance of the factory body lines and gaps between the window and the door.

Characteristics of the used component

The offered seal comes from dismantling, which means it is a used part that retains the functionality intended by the manufacturer. Such components are frequently chosen for bodywork maintenance when the goal is to preserve the original specification and construction while optimizing repair costs.

In the case of door seals and mouldings, it is important to maintain appropriate material flexibility and correct profile geometry – a used original part usually fits the factory construction better than universal-shape replacements.

Installation and service application

The rear left window strip seal is intended for installation in the factory mounting points of the W205 door. In practice, this means:

• the possibility of replacement during standard body and paint work or door service,
• easier restoration of sealing after a collision or window replacement,
• reduced risk of rattles, vibrations, and leaks in the window area.

A well-chosen seal helps maintain vehicle comfort, especially regarding interior acoustics and protection against water and corrosion within the door area.

Expanding Mercedes W205 door service

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

If you want to deepen your knowledge about selecting consumables and used components in vehicle systems, the guide article Clutch and dual-mass flywheel – diagnostics and part selection for the drivetrain may be helpful, as it demonstrates a practical approach to assessing the condition of parts and their proper selection.