Mercedes W205 Front Window Frame Door Left N/S Moulding Gasket A2057254500

Visual condition of the part 

The product shows signs of use visible in the photos. 

Mercedes W205 Front Window Frame Door Left N/S Moulding Gasket is a precisely fitted body component designed for the front left door of this model. It is responsible for the tight guidance of the window and its stable seating in the frame, which translates into better protection against noise, water, and contaminants. Choosing an original window frame moulding gasket allows you to maintain the factory door geometry and acoustic comfort inside your Mercedes.

Specifications and technical data

• SKU: A2057254500
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2057254500
• Substitutable numbers: A2057254500, A 205 725 45 00
• Location on the vehicle: Front, Left
• Category: Window Seals, Gaskets & Trims

Function and application in the Mercedes W205

The presented gasket along with the window frame moulding operates in the front left door area, guiding the window along the correct trajectory and stabilizing it during raising and lowering. The properly shaped profile ensures:

• reduction of air drafts at higher speeds,
• reduction of road noise and wind noise,
• protection of the door interior against excessive moisture ingress,
• maintenance of proper window pressure against the frame.

As a result, the window and door system in the Mercedes W205 maintains stable operation, and the cabin remains better insulated from external conditions.

Benefits of using the original gasket and moulding

The original element from the Window seals and mouldings group is designed for the specific body geometry of the Mercedes, which translates into high assembly repeatability. In practice, this means:

• factory fit to the shape of the door frame and window,
• stable adhesion along the entire length of the guide,
• reduced risk of rattling, play, and unwanted vibrations,
• more predictable window behavior in the guides.

Compared to aftermarket replacements, the original window frame moulding gasket ensures consistency with other body components, which is especially important in premium class cars such as Mercedes.

Characteristics of the used component

The offered component comes from disassembly and is marked as a used part, which allows for economical repair while maintaining the original manufacturer's specifications. This type of solution is particularly beneficial when you want to:

• maintain original build quality,
• preserve a consistent appearance of the window edge and door frame,
• reduce service costs during body repairs.

The used window frame moulding gasket will work well both when replacing a damaged element after a collision and for repairs related to leaks or problems with window guidance.

Selection and installation in the front door zone

The element is intended for installation in the front, left part of the body, which facilitates unambiguous selection when repairing a specific side of the vehicle. During replacement, it is worth paying attention to:

• proper seating of the gasket in the door frame slot,
• even pressing of the moulding along its entire length,
• checking the window operation after installation – smooth movement and no jamming.

A properly installed window frame moulding gasket contributes to the stable operation of the window lifting mechanism and reduces the risk of the door becoming unsealed again.

Expanding the scope of repairs and knowledge about used parts

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

To better understand the advantages of using original components from disassembly in cars of this brand, it is worth reading the article Mercedes – comfort, prestige, and durability. Why is it worth choosing original used parts?, which discusses the practical aspects of operating and servicing Mercedes vehicles using used parts.