Mercedes C-Class W203 Rear Right Door O/S Window Guide Seal Gasket A2037350225

The Mercedes C W203 Rear Right Door Window Seal is a precisely profiled body component designed for the rear right door window in the W203 generation C-Class models. It ensures a tight seal for the window, reduces wind noise, and protects the interior from water and dirt. By maintaining factory geometry, it serves as a functional service solution for door repairs and replacement of worn seals.

Specifications and technical data

• SKU: A2037350225
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2037350225
• Substitutable numbers: A2037350225, A 203 735 02 25, AS
• Location on the vehicle: Rear, Right
• Category: Door Panels

Purpose and Function in the Body

The seal is specifically designed for installation in the rear right door, where it interacts with the window lifting mechanism and the door frame structure. Its profile provides:

• stable vertical window guidance,
• reduction of vibrations and rattles during driving,
• sealing of the window-to-door frame contact,
• reduction of cabin noise at higher speeds.

The dedicated fit for the specific body model helps maintain the door's cohesive lines and ensures the proper operation of the entire window assembly.

Construction and Fit for Mercedes C W203

The seal's geometry has been developed for the door construction of the Mercedes C-Class W203, resulting in precise adhesion to the window and frame edges. Appropriately shaped corner sections facilitate proper water drainage and minimize the risk of leaks at critical points.

This component belongs to the Door Upholstery group, meaning it works in conjunction with other interior and exterior trim components, such as upholstery panels, decorative strips, and window guides.

Benefits of Using an Original Seal

Using a dedicated seal for the rear right door window restores the vehicle's factory acoustic and functional parameters. Key benefits include:

• Reduced air drafts at higher speeds, improving acoustic comfort in the cabin.
• Better protection against moisture ingress around the door upholstery, reducing the risk of corrosion and interior dampness.
• Stable operation of the window mechanism due to proper guidance within the seal channel.
• Consistent appearance of the window and door edges, without deformations or unnatural gaps.

This is a practical solution for replacing worn or deformed seals, especially in vehicles operated in varying weather conditions.

Component Condition and Service Application

The offered seal is a used part from a dismantled vehicle, making it an attractive cost-effective alternative to new components while maintaining original mounting specifications. It is suitable for both localized repairs of individual doors and broader body renovation work, including the replacement of multiple seals on the vehicle.

Expanding Door-Related Work Scope

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

When planning broader modernization work on your vehicle, including the powertrain and matching gear ratios to your driving style, a technical guide might be helpful – find more information in the article Used Drive Axles and Differentials – How to Choose Gear Ratios for Your Driving Style.