Mercedes-Benz C-Class W204 Rear Left N/S Door Sealing Strip Bottom Trim Rail

Mercedes-Benz C-Class W204 Rear Left N/S Door Sealing Strip Bottom Trim Rail is a precisely fitted body component that helps maintain the seal and acoustic comfort within the cabin. Thanks to its design, which complies with the manufacturer's standards, it ensures stable window operation and protection against moisture and contaminants. This is a practical solution for users who want to restore the proper operation of the rear left door.

Specifications and technical data

• SKU: A2046903962
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2046903962
• Substitutable numbers: A2046903962, A 204 690 39 62, EM
• Location on the vehicle: Rear, Left
• Category: Door Seals

Purpose and fitment

The presented rear left door sealing strip has been designed specifically for the Mercedes C-Class W204 generation body. The component is mounted in the lower part of the rear left door, where it is responsible for properly sealing the contact point between the door and the sill, as well as protecting the edge of the sheet metal from the effects of external factors.

Thanks to the factory profile and the appropriate shape of the trim, the installation process is straightforward, and once installed, the seal maintains proper adhesion along its entire length. This is particularly important in vehicles used daily, where leaks can lead to interior dampness and accelerated corrosion.

Function and benefits of installation

The lower door sealing trim performs several important operational functions:

• limits the ingress of water, mud, and road salt into the door interior and cabin,
• supports the maintenance of a stable position of the door panel relative to the sill,
• reduces noise and wind gusts in the rear part of the body,
• protects the edges of the sheet metal from mechanical damage and corrosion.

Replacing a worn or damaged seal with an original component from the same group allows for the restoration of factory-level sealing and improves the overall comfort of using the vehicle. This is especially important in the case of premium-class cars, where proper acoustic insulation and solid door closing are expected.

Characteristics of the used component

The offered seal belongs to the group of used body components, which allows for an economical repair while maintaining compatibility with the original construction. Such components are frequently chosen for door servicing after minor collisions, panel replacement, or when addressing the effects of long-term wear.

Using a part sourced from the dismantling of a vehicle of the same make and model facilitates installation and reduces the risk of fitment issues typical of universal-profile replacements. This is a practical solution for workshops and users servicing their own cars.

Installation zone and service application

The seal is intended for installation in the rear left zone of the body, in the lower part of the door. It works well both for local repairs after mechanical damage and for comprehensive renovation of the side of the vehicle when it is necessary to replace several door elements simultaneously.

Such a service approach helps to limit subsequent problems with leaks, squeaking, or improper door closing, which often result from leaving worn seals in place after body and paint repairs.

If you are planning a comprehensive repair or upgrade of the door zone in your Mercedes and need other elements from the same group, such as additional sealing strips, lower bumpers, or side door profiles, check the available parts in the Mercedes door seals category.

More about using used parts

For those who want to better understand how to consciously select components from the secondary market for modifications and repairs, a guide dedicated to tuning and the use of used components may be helpful. Practical tips regarding the selection of components, assessing their condition, and planning upgrades can be found in the article The best used parts for tuning your car.