Mercedes-Benz CLC-Class CL203 Front Left N/S Door Weatherstrip Seal A2037270935

Mercedes-Benz CLC-Class CL203 Front Left N/S Door Weatherstrip Seal is an original body component designed for installation on the front left door, ensuring tightness and stable door operation. Thanks to its factory fit for the CLC-Class CL203 body, this door weatherstrip seal allows you to restore proper protection against water, noise, and wind gusts. The part comes from vehicle dismantling, making it a practical choice for repairs and servicing of Mercedes cars.

Specifications and technical data

• SKU: A2037270935
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2037270935
• Substitutable numbers: A2037270935, A 203 727 09 35, AZ
• Location on the vehicle: Front, Left
• Category: Door Seals

Purpose and body fitment

The presented seal is designed specifically for Mercedes-Benz CLC-Class CL203 generation models and is mounted on the front left door. The profile shape and corner geometry are adapted to the factory body line, which enables precise positioning on the door edge and proper adhesion to the body frame.

The placement on the vehicle in the front left body area allows for direct replacement of a worn or leaking seal without the need for modifying mounts or interfering with the door structure. As a result, this component is suitable for both post-accident repairs and standard sealing system restoration.

Technical function and benefits of installation

The door seal plays a key role in protecting the vehicle interior from external factors. A properly selected and installed component:

• limits the ingress of water and moisture into the door interior and cabin,
• reduces wind noise and external noise, improving acoustic comfort,
• stabilizes the position of the door leaf when closing,
• supports maintaining proper door pressure against the body.

For the user, this means a more comfortable ride, a lower risk of window fogging, and better protection for the upholstery and electrical wiring in the door. In the case of the Mercedes CLC CL203, using an original seal allows you to maintain factory sealing and acoustic parameters.

Characteristics of the used component

The offered seal comes from a dismantled Mercedes vehicle, which in practice means maintaining the original geometry and compatibility with factory mounts. This type of component is particularly useful when servicing older vehicles, where compliance with the original design and the ability to install without additional modifications is important.

Choosing a used door seal for a Mercedes allows you to optimize repair costs while maintaining the original manufacturing standard. This is a solution recommended for workshops, body shops, and individual users who expect a proven component with a factory fit.

Installation and service application

The seal is intended for installation in the front-left area, on the door perimeter. In a typical service process, the old seal is removed, and the contact surface is cleaned of dirt and material residue. Then, the new component is laid out according to the factory path, ensuring proper seating in the corners and even pressure along the entire length.

Such a replacement allows for restoring door tightness, which is particularly important after bodywork repairs, hinge adjustments, or in the case of noticeable leaks and increased noise while driving. For CLC-Class CL203 models, using a dedicated seal minimizes the risk of mismatching, which is typical for universal replacements.

Related Mercedes door seals

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other components from the same group, such as additional perimeter seals, window frame seals, or pillar seals, check the available parts in the Mercedes door seals category.

Practical service tips

When replacing door seals, it is worth paying attention to the general condition of the door edges, any signs of corrosion, and the correctness of hinge adjustments. Leaks may result not only from rubber wear but also from improper door closing or body deformations. In the case of broader restoration work, guide materials may be helpful, such as the article How to buy a used car engine and not get scammed – a step-by-step guide, which shows what to look for when choosing used components and how to minimize the risk of a bad purchase.