Mercedes CLC-Class CL203 Front Right Door O/S Window Seal Gasket A1687250825

Mercedes CL203 Front Right Door Window Seal is an original body part from the Door Upholstery group, designed for installation on the front right door of Mercedes vehicles. The precisely shaped sealing profile helps reduce noise, improves acoustic comfort inside, and supports protection against water and dirt ingress.

Specifications and technical data

• SKU: A2037250425
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2037250425
• Substitutable numbers: A2037250425, A 203 725 04 25, AS
• Location on the vehicle: Front, Right
• Category: Door Panels

Purpose and Function of the Seal

The front right door window seal in Mercedes CL203 coupé models is responsible for the airtight guidance of the window in the door frame and stabilizing its position while driving. This component works in direct contact with the window, making its correct shape and flexibility crucial for:

• reducing wind noise at higher speeds,
• reducing window vibrations in the guide,
• protecting the door interior from moisture,
• maintaining the correct door closing geometry.

Thanks to its adaptation to the specific body type, the seal works with the factory door frame construction, which facilitates installation and allows for a consistent appearance of the window edge.

Compatibility and Vehicle Fitment

The presented seal is intended for installation on the front right door, in the window guide area. The appropriate profiling of the working cross-section and mounting points allows for correct seating in the original Mercedes door slots, without the need for body modifications.

As a component from the Door Upholstery category, the seal works with other trim components, such as door panels, trim strips, or window guides, which helps maintain the factory standard of fit and aesthetics.

Performance Characteristics

The front right door window seal for the Mercedes CL203 has been designed for long-term operation in varying weather conditions. The flexible structure of the working material allows for:

• maintaining a seal with repeated opening and closing of the door,
• compensating for minor door frame deformations during body flex,
• stable window guidance throughout its entire range of motion.

The appropriately selected hardness of the sealing compound helps reduce creaking and unwanted noises during window operation, which translates into more comfortable vehicle use.

Item Condition and Service Application

The offered seal is a used item, making it an attractive service solution for users looking for original components at a reasonable price. This type of part is particularly suitable for:

• repairs after collisions in the front right door area,
• eliminating leaks and water ingress around the window,
• reducing cabin noise resulting from worn factory seals.

Using an original seal from the same model group allows for dimensional compatibility with the factory door frame and avoids problems typical of universal aftermarket replacements.

Related Items and Additional Information

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

For drivers interested in a broader perspective on vehicle steering components and their interaction with the steering column, an article describing the construction and common faults of the steering system may be useful – you can find it here: Steering System and Power Steering – How It Works and What Fails?.