Audi RS3 8V Rear Door Seal Window Seal Sealing Rubber Gasket Left N/S 8V4839439B

Audi RS3 8V Rear Door Seal Window Seal Sealing Rubber Gasket Left N/S is a precisely fitted, original component from the Window seals and trims group, designed for the rear left section of the vehicle body. The rubber construction ensures a tight fit against the window and door frame, reducing noise, vibrations, and water ingress into the vehicle interior. This solution helps restore proper cabin protection and maintain the acoustic comfort characteristic of Audi RS models.

Specifications and technical data

• SKU: 8V4839439B
• Mark: Audi
• Condition: Used
• OEM Part Number: 8V4839439B
• Substitutable numbers: 8V4839439B, 8V4 839 439 B, 8V4839439D, 8V4 839 439 D
• Location on the vehicle: Rear, Left
• Part type: Window Seal
• Category: Window Seals, Gaskets & Trims

Purpose and body fitment

The presented seal has been designed specifically for installation in the rear left part of the body, within the door window area. The properly profiled rubber cross-section allows for stable seating in factory mounting points, without the need for modifications or forced fitting. As a result, the component works with the window and door structure in the manner intended by the manufacturer, which reduces the risk of leaks and unwanted noises while driving.

Material and functional characteristics

The rubber seal works flexibly across a wide temperature range, compensating for minor deformations of the door and window resulting from vehicle use. The appropriate hardness of the compound helps to:

• maintain stable pressure of the window against the door frame,
• reduce wind noise at higher speeds,
• limit the ingress of moisture and contaminants into the interior,
• maintain a consistent appearance of the window and door edges.

Such properties are particularly important in cars with a sporty character, where the precision of body panel fitment affects the perceived driving comfort.

Condition of the component and installation aspects

The seal is offered as a used part, which allows for an economical replacement while maintaining the original manufacturer's specifications. The component, sourced from factory equipment disassembly, retains geometry consistent with the Audi door and window lines, which facilitates installation in workshop or service conditions. In practice, this means the ability to restore proper sealing without the need to use replacements with uncertain profiles.

Benefits of using an original seal

Using an original rubber window seal in the rear left door allows you to maintain the structural integrity of the body and the performance parameters intended for the Audi RS3. Replacing a worn component with a properly fitted seal:

• improves acoustic comfort inside the vehicle,
• reduces the risk of window fogging resulting from moisture ingress,
• supports the proper operation of the window lifting mechanism,
• helps maintain the aesthetics of the door edge and the side line of the vehicle.

Expanding the scope of service work

If you are planning a comprehensive repair or upgrade of the window and door area in your Audi and need other elements from the same group, such as additional seals, trim strips, or guide profiles, check the available parts in the Audi window seals and trims category.

When planning broader work on the body and lighting, it is also worth expanding your knowledge on selecting lighting elements – you will find practical tips in the article See more and better – a complete guide to selecting and replacing used LED and Xenon headlights, which discusses the selection of original components in premium class vehicles.