Mercedes W203 Touring Window Strip Door Trim Moulding Rear Left N/S A2036903980

The Mercedes W203 Estate Rear Left Door Window Seal is an original body part from the Doors and Door Panels group, designed for installation on the rear left side of the vehicle. The black seal provides an aesthetic finish to the window edge and stable guidance for the weatherstrip, contributing to driving comfort and reducing wind noise.

Specifications and technical data

• SKU: A2036903980
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2036903980
• Substitutable numbers: A2036903980, A 203 690 39 80, KD
• Location on the vehicle: Rear, Left
• Color: Black
• Category: Doors & Door Skins

Intended Use and Function of the Part

The rear left door window seal for the W203 Estate model is responsible for precise guidance of the window edge and proper sealing of the area between the window and the door panel. A correctly fitted seal:

• stabilizes the window in its track during opening and closing,
• prevents water and dirt from entering the door interior,
• reduces wind noise at higher speeds,
• enhances the visual line of the vehicle's side.

Its placement on the rear left side of the vehicle allows for direct replacement of a damaged or worn seal without interfering with other structural door components.

Construction, Color, and Fitment

This seal has been specifically designed for the W203 Estate body, ensuring a precise fit to the door frame and factory weatherstrips. The black color is consistent with the typical finish of side body elements on this model, allowing the part to harmoniously blend with other trims and seals.

Being an original part from Mercedes means it adheres to factory dimensional tolerances, facilitating installation and minimizing the risk of leaks. The seal is compatible with factory door mountings, requiring no modifications or adjustments.

Condition, Origin, and Benefits of Use

This part is a used item, sourced from dismantling, offering a balance between reasonable repair costs and maintaining original manufacturing quality. Compared to aftermarket alternatives, the original door seal better replicates the vehicle's body lines and integrates seamlessly with factory windows and weatherstrips.

Using this seal on the rear left side of the vehicle:

• restores proper window guidance after replacing a damaged part,
• reduces the risk of window fogging caused by leaks,
• improves the overall aesthetics of the vehicle's side after a collision or corrosion of the previous seal.

Installation Compatibility and Identification

The product is assigned a SKU and an OEM part number, which simplifies unambiguous identification in service catalogs and when comparing with the existing part on the vehicle. Available interchangeable numbers also allow for verification of compatibility with specific W203 Estate body versions.

The precise placement on the vehicle and assigned color allow for selecting the seal specifically for the side and part of the body requiring repair, eliminating the risk of confusion between the right and left sides or different body types.

Assistance with Selection and Additional Information

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

When deciding to use dismantled parts for body and related system repairs, it's beneficial to be aware of best practices for selecting used parts. Practical tips can be found in the article Brake Calipers Under the Microscope: How to Effectively Reduce Brake System Repair Costs by Choosing Proven Recycled Parts, which demonstrates how to safely optimize service costs using original recycled components.