Mercedes W204 Seal Window Rear Left Door Sealing Frame A2047300155

Mercedes W204 Seal Window Rear Left Door Sealing Frame is a precisely fitted body component designed for the rear left window in W204 series models. It is responsible for ensuring a tight window seal, reducing noise, and protecting the interior from water and debris, while also ensuring stable operation of the window regulator mechanism. This solution is dedicated to drivers who want to restore the factory functionality and aesthetics of the side body area.

Specifications and technical data

• SKU: A2047300155-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2047300155
• Substitutable numbers: A2047300155, A 204 730 01 55
• Location on the vehicle: Rear, Left
• Category: Door Seals

Purpose and function of the seal

The offered seal has been designed specifically for the rear left window of the Mercedes W204 class, which guarantees a proper fit to the shape of the door and the window guide. This component is responsible for:

• maintaining proper sealing between the glass and the door frame,
• limiting the ingress of water, dust, and road salt into the door interior,
• reducing wind noise while driving,
• stable guidance of the window during raising and lowering.

Thanks to this, acoustic comfort in the cabin remains at a high level, and the window regulator mechanism operates under predictable operating conditions.

Compatibility and body fitment

The seal is intended for installation in the rear left part of the body, which eliminates the need for any modifications or fitting of universal replacements. The design corresponds to the manufacturer's factory specifications, thanks to which:

• the contact line with the glass is uniform along the entire length,
• the door maintains proper closing geometry,
• the risk of rattles, squeaks, and looseness in the window area is minimized.

Such fitment is particularly important in premium class vehicles, where visual and functional consistency of body components has a direct impact on the perception of the entire car's quality.

Characteristics of the used component

The seal comes from the secondary market, which allows for maintaining the original design specifications characteristic of the Mercedes brand. A used component is a good choice when:

• the existing seal is perished, cracked, or deformed,
• there are leaks and audible wind noise at higher speeds,
• water stains appear in the area of the door upholstery or sills.

Using an original seal from the secondary market allows you to restore proper window operating conditions and increase protection of the door interior against moisture, without the need to invest in expensive new components.

Benefits of replacing the window seal

Regular inspection and replacement of door seals is important not only for aesthetic reasons but primarily for operational ones. Installing a functional rear left window seal in a Mercedes W204 translates into:

• reducing the risk of corrosion inside the door and on the lower edges of the panel,
• better cooperation with the window regulator mechanism,
• limiting interior window fogging,
• maintaining a stable noise level in the cabin.

This is a simple yet technically significant upgrade of the door zone, especially in vehicles operated in variable weather conditions.

Mercedes door seals – expansion and modernization

If you are planning a comprehensive repair or modernization of the door zone in your Mercedes and need other elements from the same group, such as additional edge seals, door frame seals, or window guide seals, check the available parts in the Mercedes door seals category.

Additional technical support

When planning larger repairs or vehicle modernizations, it is worth expanding your knowledge on how to assess the condition of secondary market components. Practical tips on verifying used components can be found in the article How to buy a used car engine and not get scammed – a step-by-step guide, which helps develop an informed approach to purchasing used parts.