Mercedes C203 Window Rail Seal Rear Right O/S Sealing Strip Trim A2036902080

The Right Rear Window Seal for Mercedes C-Class C203 is a precise body component from the Doors and Door Panels group, responsible for the watertight guiding of the window and stable sealing of the window edge. The black profile, fitted to the right rear side of the body, ensures proper window adhesion, reduces wind noise, and helps maintain adequate protection against moisture.

Specifications and technical data

• SKU: A2036902080
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2036902080
• Substitutable numbers: A2036902080, A 203 690 20 80
• Location on the vehicle: Rear, Right
• Color: Black
• Category: Doors & Door Skins

Purpose and Function in the Body

The right rear window seal is a component mounted in the door frame area, where it guides the window along the correct trajectory and provides flexible sealing. Thanks to its specific fit to the vehicle's side, the rear window moves smoothly within the guide, without excessive play or unwanted vibrations.

The black color of the profile allows for a cohesive integration with the factory finish of the door frame, which is important for both aesthetic and functional reasons. The appropriately designed geometry of the seal supports maintaining the correct window position in both the upper and lower settings, contributing to acoustic comfort inside the cabin and reducing drafts.

Benefits of Using an Original Seal

Using a dedicated window seal for the Mercedes C-Class C203 allows for the preservation of the original fit of the door components. The appropriate shape and material hardness contribute to:

• stable vertical window guidance,
• reduction of cabin noise at higher speeds,
• limited risk of water ingress into the door interior,
• reduced load on the window lifting mechanism.

For the user, this means more predictable operation of the window mechanism and a lower risk of accelerated wear of other components within the door.

Visual Characteristics and Fit

The black, discreet surface of the seal blends well with factory trim and window frames, without altering the appearance of the vehicle's side. The element, designed for the right rear side of the body, is profiled to the specific door geometry, which facilitates installation and ensures even pressure on the window along the entire length of the guide.

Such a precise fit is important not only for aesthetics but also for durability – a correctly positioned seal reduces point stresses on the glass edges and minimizes the risk of leaks in critical areas.

Condition and Service Application

This component comes from the group of used body parts, making it an attractive solution for door servicing and replacement of worn window seals. It can be used for repairs after collisions as well as for typical renovation of the vehicle's side area when symptoms such as increased cabin noise, loose window operation, or localized leaks appear.

Mercedes Doors and Door Panels – Expansion and Modernization

If you are planning a comprehensive repair or modernization of the door area in your Mercedes and need other components from the same group, such as panels, reinforcements, or additional trim, check the available parts in the Mercedes Doors and Door Panels category.

For drivers considering broader use of used components for body and interior servicing, practical tips on selecting used parts and optimizing costs can be found in the article Used Car Parts for Mini Cooper – A Way to Style and Save.