Mercedes W205 Rear Left N/S Window Frame Outside Guide Rail Sealing A2057355300

Mercedes W205 Rear Left N/S Window Frame Outside Guide Rail Sealing is an original body component from the Window seals and trims group, designed for installation in the rear left section of the vehicle body. It ensures a tight fit for the door window, reduces water and noise ingress into the interior, and helps maintain the stable operation of the window lifting mechanism in your Mercedes.

Specifications and technical data

• SKU: A2057355300
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2057355300
• Substitutable numbers: A2057355300, A 205 735 53 00
• Location on the vehicle: Rear, Left
• Category: Window Seals, Gaskets & Trims

Purpose and function of the seal

The presented seal is designed for installation in the rear left door area, where it is responsible for precisely sealing the window against the door frame. A properly selected rubber profile minimizes window vibration, reduces wind noise at higher speeds, and supports the protection of the interior against moisture and dirt.

Thanks to its fit for the specific W205 body generation, the component maintains the correct contact geometry with the window and door panel, which translates into stable operation of the entire door assembly and the maintenance of acoustic comfort in the cabin.

Benefits of using an original Mercedes seal

Choosing an original rubber window seal for the Mercedes W205 allows you to maintain factory sealing and fitment parameters. As a component from the same design group as other body parts, it provides:

• a compatible shape adapted to the rear left side of the vehicle,
• stable window guidance in the rail,
• reduction of wind "whistling" when the doors are closed,
• better protection of the interior against rainwater and road salt.

A used, original component of this class is a technically sound choice for post-accident repairs, replacement due to corrosion, or wear and tear, when you want to maintain consistency with the factory body construction.

Selection and installation in the rear left body area

The seal is intended for a specific location on the vehicle – rear, left side. Thanks to this, the installation is predictable, without the need for modifications or adjusting the rubber profile. In practice, this means:

• easier seating of the seal in the factory door slots,
• proper adhesion to the window edge and frame,
• maintenance of body lines consistent with the manufacturer's design.

When replacing, it is worth paying attention to the condition of the contact surface in the door and the correct positioning of the seal around the entire perimeter of the window, which directly affects the tightness and durability of the repair.

Application in service and body repairs

This type of seal is used both in body and paint repairs after collisions, as well as for typical wear and tear of rubber in older W205 models. Replacing a worn seal with an original component allows you to reduce the risk of window fogging, streaks on door upholstery, and accelerated corrosion of internal metal edges.

If you are planning a comprehensive repair or upgrade of the door glazing area in your Mercedes and need other elements from the same group, such as additional frame seals, trim strips, or guide profiles, check the available parts in the Mercedes window seals and trims category.

Practical maintenance tips

To extend the life of the door window seal, it is worth periodically cleaning its surface from sand and dirt and using dedicated rubber maintenance products. This reduces micro-cracks, improves material flexibility, and helps maintain stable window pressure against the seal throughout the entire range of the lifting mechanism's operation.

Additional tips on economical operation and planning component replacements in your car can be found in the article TOP 10 most frequently replaced parts in your car, which contains practical advice for drivers who care about the technical condition of their vehicle.