Audi A3 8V Rear Window Strip Trim Door Moulding Sealing Left N/S 8V5839643C

Visual condition of the part

The product shows signs of use visible in the photos.

Audi A3 8V Rear Window Strip Trim Door Moulding Sealing Left N/S is an original body component from the Doors and door panels group, designed for installation in the rear left section of the vehicle. The precisely matched geometry of the seal helps maintain the tightness of the window-to-door connection, limiting the ingress of water, dirt, and noise into the cabin. This is a practical solution for users who want to restore factory door performance and maintain a consistent appearance of the side bodywork.

Specifications and technical data

• SKU: 8V5839643C
• Mark: Audi
• Condition: Used
• OEM Part Number: 8V5839643C
• Substitutable numbers: 8V5839643C, 8V5 839 643 C
• Location on the vehicle: Rear, Left
• Category: Doors & Door Skins

Purpose and function of the component

The rear window strip trim on the left side is responsible for sealing the window edge against the door structure. In practice, this means:

• reducing air drafts at higher speeds,
• limiting rainwater ingress into the door interior,
• stable window guidance in its extreme position,
• maintaining an aesthetic side body line.

Thanks to its proper fit for the specific Audi A3 8V model, the strip works in harmony with the factory window lifting mechanism and other door trim elements, which helps maintain structural consistency.

Construction and body fitment

The component is designed as a part dedicated to the rear left side of the vehicle, allowing for installation in place of the factory seal without the need for modifications. The strip's construction is profiled to:

• adhere tightly to the window edge and door frame,
• ensure even pressure along the entire contact length,
• maintain correct window operation in the guides.

This solution helps maintain proper sealing and reduces the risk of unwanted play or rattling when opening and closing the doors.

Performance characteristics and installation

As a component from the Doors and door panels group, the rear window strip trim works with the door skin, frame, and window mechanism, affecting the comfort of daily vehicle use. A properly selected seal can:

• reduce noise levels in the cabin originating from the rear body area,
• limit moisture inside the door, which helps protect metal components and upholstery,
• improve the feeling of solidity when closing the doors.

The component is intended for installation in place of the factory strip, which facilitates service work and allows for maintaining the original sealing line path.

Condition and service application

The product is used, making it an attractive solution for users looking for original parts at a reasonable price while maintaining compatibility with the factory door construction. This type of component is particularly useful in situations where:

• the existing strip has suffered from operational or mechanical wear,
• replacement is necessary after body and paint repairs to the rear part of the body,
• maintaining a consistent look of the side window line is important.

A well-chosen rear window door seal helps restore proper window operating conditions and acoustic comfort in the rear part of the passenger cabin.

Expanding door area upgrades

If you are planning a comprehensive repair or upgrade of the door area in your Audi and need other elements from the same group, such as skins, reinforcements, or additional strips, check the available parts in the Audi Doors and door panels category.

When planning broader service work, it is also worth paying attention to the general principles of selecting body components and their impact on safety and driving comfort – helpful tips on assessing the condition of used components can be found in the article Second-hand braking system: how to safely choose discs, calipers, and ABS?, which discusses practical criteria for evaluating parts from the secondary market, also useful when analyzing other vehicle subassemblies.