Mercedes W221 Rear Door Window Interior Upper Trim Moulding Left N/S A2217303922

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W221 Rear Door Window Interior Upper Trim Moulding Left N/S is an original interior component that allows you to restore the factory look of the rear passenger area. Thanks to its precise fit to the body structure, it ensures a seamless finish for the upholstery and stable guidance for the window edge. This is a practical solution for users who want to professionally restore the interior aesthetics and maintain a high-quality finish in their Mercedes.

Specifications and technical data

• SKU: A2217303922
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2217303922
• Substitutable numbers: A2217303922, A 221 730 39 22
• Location on the vehicle: Rear, Left
• Part type: Trim Strip
• Category: Trim

Purpose and fitment

The described moulding is designed for installation in the rear part of the vehicle, on the left side, in the Mercedes S-Class W221 generation model. The positioning on the vehicle has been factory-engineered so that the component fits precisely against the door frame, creating a cohesive connection with the remaining upholstery components. This ensures the correct geometry of the window guide and an aesthetic line for the upper window edge.

As a part from the Linings, decorative trims and decorations group, this element is responsible for the visual finish of the interior and covering critical structural areas of the door. Proper fitment to the specific body model reduces the risk of unwanted gaps, squeaks, or vibrations during vehicle operation.

Function in the door structure

The rear window interior upper trim moulding performs several important functions in the door structure:

• stabilizes the edge of the upholstery along the upper part of the window frame,
• creates an aesthetic transition between the glass and the interior trim,
• helps prevent debris from entering the space between the glass and the door panel,
• supports the maintenance of proper alignment for seals and window guide components.

By using an original component, the structural integrity of the entire door panel is maintained, which translates into stable operation of the window mechanism and predictable behavior of the trim elements over a long period of use.

Characteristics and benefits of use

The original rear window interior trim was designed for the specific door profile of the Mercedes W221, which ensures repeatable and predictable fitment. The use of the factory shape and mounting points facilitates installation and minimizes the need for additional adjustments. This is particularly important during work related to replacing upholstery, repairing the window lifting mechanism, or restoring the interior to a factory-like condition.

Choosing an original element from the Linings, decorative trims and decorations category allows you to maintain a uniform stylistic line of the interior, without differences in texture or geometry compared to other components. This solution is recommended both for accident repairs and for comprehensive passenger cabin restoration, where visual consistency and correct technical fitment are essential.

Condition and service application

The item is a removed part intended for reinstallation in a vehicle where it is necessary to replace a damaged or missing rear window interior upper trim moulding on the left side. This type of part is suitable for both professional body and paint shops and workshops specializing in the restoration of premium car interiors. Using an original component helps maintain a high standard of repair and reduces the time required to fit the element to the door structure.

Related interior trim elements

If you are planning a comprehensive repair or upgrade of the rear door area in your Mercedes and need other elements from the same group, such as covers, overlays, or additional trims, check the available parts in the Linings, decorative trims and decorations Mercedes category.

If you are interested in a broader approach to vehicle modification and want to combine interior work with performance improvements, you will find practical tips in the article How to increase engine power: a practical guide to engine tuning with used parts, which discusses the safe use of components from the secondary market.