Mercedes S203 Side Glass Window Rear Right O/S A2036703812

Mercedes S203 Rear Right Side Window O/S A2036703812 is an original body part from the Car Glass group, designed for installation in the rear right section of the vehicle. A used side window ensures a factory fit to the Mercedes body, maintaining proper geometry, sealing, and side line aesthetics. This is a practical solution for drivers seeking a proven OEM component at a reasonable price.

Specifications and technical data

• SKU: A2036703812
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2036703812
• Substitutable numbers: A2036703812, A 203 670 38 12
• Location on the vehicle: Rear, Right
• Category: Car Glass

Purpose and Placement of the Window

The presented side window is dedicated for installation in the rear right part of the body, corresponding to the passenger position on the outer side. This placement is important for both safety and driving comfort – a correctly chosen window stabilizes the side structure, contributes to body rigidity, and reduces noise from airflow.

Thanks to its precise profile and appropriate shape, the window works with seals and guides of the door or side panel, which facilitates installation and ensures system sealing. This is particularly important in Mercedes-class vehicles, where a high level of refinement and reduction of vibrations and noise is expected.

Benefits of Using an Original Mercedes Window

Using an original side window in a Mercedes S203 allows for maintaining the structural and visual consistency of the vehicle. A part from the same production line as the factory equipment ensures:

• correct fit to the door frame or body,
• maintenance of factory assembly tolerances,
• stable cooperation with lifting mechanisms (if present),
• appropriate rigidity and resistance to operational stresses.

For the user, this means a lower risk of leaks, creaks, or unwanted vibrations. A used OEM part is also a favorable compromise between quality and repair cost, especially in cases of mechanical damage or after a collision.

Performance Characteristics and Installation

The rear right side window for Mercedes has been designed for direct installation in the appropriate body model, without the need for vehicle structure modification. In practice, this means:

• retention of original mounting points,
• compatibility with factory seals and trims,
• possibility of installation within standard service procedures.

When replacing the window, it is worth paying attention to the proper preparation of the bonding surface and checking the condition of the seals to fully utilize the potential of this component and maintain proper cabin sealing.

Application in Accident Repairs and Restoration

Car glass is a key element in accident repairs, especially in the side area of the vehicle. Replacing a damaged side window with an original component allows for restoring the original appearance of the body and ensuring proper operating conditions – from protection against weather to acoustic comfort inside the cabin.

In the case of restoration or partial body reconstruction of a Mercedes S203, using a used OEM window is a sensible solution that preserves the vehicle's character while limiting costs compared to new parts.

Repair Extension – Other Mercedes Windows

If you are planning a comprehensive repair or upgrade of the side glazing area in your Mercedes and need other elements from the same group, such as front side windows, rear side windows, or additional glazing elements, check the available parts in the Mercedes Car Glass category.

Technical Support and Knowledge about Used Parts

When selecting used body parts, including windows, it is advisable to be aware of the general principles for assessing component condition and the impact of operating conditions on their durability. In the context of other vehicle components, such as the cooling system, our guide describing the advantages of using used OEM parts may be helpful – find more information in the article Summer Heat vs. Cooling System: Used Radiators and Fans Guarantee Savings.