Mercedes W204 Rear Left Door N/S Window Sealing Frame A2047352125

Mercedes W204 Rear Left Door N/S Window Sealing Frame is an original body component designed for the rear left door area in Mercedes vehicles. The precisely shaped sealing profile ensures stable window guidance and limits the ingress of water, noise, and contaminants into the cabin. This is a practical solution for users looking to restore the proper operation of the window mechanism and maintain the vehicle's acoustic comfort.

Specifications and technical data

• SKU: A2047352125
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2047352125
• Substitutable numbers: A2047352125, A 204 735 21 25, BG
• Location on the vehicle: Rear, Left
• Category: Door Panels

Purpose and function of the seal

The presented seal is a component from the Door Upholstery group, dedicated for installation in the rear left door of Mercedes W204 class vehicles. Its task is to provide stable guidance for the window in the channel and to seal the contact point between the window and the door frame, which helps to reduce:

• air drafts at higher speeds,
• moisture penetration into the door interior and cabin,
• excessive noise from the outside,
• window vibrations and play while driving.

Thanks to its proper fit to the geometry of the rear left door, this element supports the correct operation of the window regulator and maintains the tightness of the entire area.

Construction and fit for Mercedes W204

The seal has been designed specifically for the construction of the rear left door in Mercedes W204 models, which translates into a precise fit with the frame and upholstery. Properly profiled edges work with the window and trim elements, minimizing the risk of jamming and leaks.

As a part sourced from dismantling, it retains the factory geometry and mounting method, which facilitates installation in place of a worn or damaged seal. Such a solution allows for restoring the original performance parameters without the need for door modifications.

Benefits of using an original seal

Using an original window seal in the rear left part of the body brings a number of practical operational benefits:

• Better cabin tightness – limiting the ingress of water and moisture into the door interior and upholstery.
• Stable window operation – proper guidance in the seal channel reduces the risk of play and rattling during opening and closing.
• Acoustic comfort – reduction of wind noise and external noise, especially from the rear left side.
• Aesthetic finish – maintaining a consistent contact line between the window and the door frame, without visible deformations or warping.

For users who care about the condition of the vehicle's body and interior, replacing a worn seal with an original part is a simple way to improve daily driving comfort.

Condition, installation, and service application

The item is offered in a used condition, which allows for an economical repair of the rear left door area while maintaining the manufacturer's original specifications. The seal is particularly useful in situations where the existing component shows cracks, loss of elasticity, leaks, or causes improper window operation.

In workshop practice, this type of seal is used both for standard replacement of worn components and for post-accident repairs, where it is necessary to restore proper window guidance and door tightness. Installation requires removing the relevant parts of the door upholstery, but thanks to the factory fit, it proceeds in an orderly and predictable manner.

Completing the door area in Mercedes

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other elements from the same group, such as door cards, trim panels, or window moldings, check the available parts in the Mercedes Door Upholstery category.

If you are considering a broader replacement of body elements with parts from dismantling and want to better understand the specifics of such solutions, it is worth reading the guide: Replacing body parts with used ones – can salvaged body parts look like new?.