Audi A3 8P Sportback Window Seal Door Rear Right O/S Gasket Frame 8P4839440B

Audi A3 8P Sportback Window Seal Door Rear Right O/S Gasket Frame is a precision-fitted body component designed for the rear right door of the Audi A3 8P Sportback model. It is responsible for ensuring a tight fit of the window within the door frame, improving acoustic comfort, protection against water, and the stability of the window regulator mechanism. Thanks to its factory geometry and profile, the seal ensures a consistent window edge finish and an aesthetic appearance of the side of the vehicle body.

Specifications and technical data

• SKU: 8P4839440B
• Mark: Audi
• Condition: Used
• OEM Part Number: 8P4839440B
• Substitutable numbers: 8P4839440B, 8P4 839 440 B
• Location on the vehicle: Rear, Right
• Category: Window Seals, Gaskets & Trims

Purpose and function in the Audi A3 8P Sportback body

The rear right window frame seal in the Audi A3 8P Sportback operates in the critical contact area between the window and the door. Its tasks include:

• limiting the ingress of water and moisture into the door interior and cabin,
• reducing wind noise at higher speeds,
• stabilizing the window in the guide rail during opening and closing,
• protecting the glass edge from micro-damage resulting from the mechanism's operation.

Thanks to the proper profile and material flexibility, the seal works with the door frame and the window, maintaining even pressure around the entire perimeter. This translates into better cabin sealing and a reduction in unwanted vibrations and rattles in the rear part of the vehicle.

Vehicle placement and fitment

The component is designed for the rear, right side of the body, which eliminates the risk of errors during installation and part selection. The seal's construction is profiled for the specific geometry of the Audi A3 8P Sportback door, ensuring that:

• the contact line with the door frame matches the factory sheet metal contours,
• the window travels in the track intended by the manufacturer,
• there is no need for additional adjustment or trimming of the element.

Such a solution facilitates installation and allows for maintaining the visual consistency of the side window line with the other doors on the vehicle.

Performance characteristics and benefits of replacement

Replacing a worn or leaking window frame seal in the rear right door of an Audi A3 8P Sportback provides measurable operational benefits:

• reduced window fogging due to better moisture insulation,
• decreased wind noise in the rear of the cabin,
• protection of the door interior against corrosion caused by standing water,
• more stable operation of the window regulator mechanism.

Maintaining the proper condition of seals in the window area is important not only for driving comfort but also for the durability of the sheet metal and mechanical components within the door.

Component condition and service application

The offered seal comes from the Window seals and moldings group and is intended for service applications in the Audi A3 8P Sportback. It can be used both for standard repairs after wear and tear, as well as for body and paint work following damage to the side of the vehicle body. Proper selection of the seal for the specific model and body version helps avoid issues with door closing and improper window fitment.

Support in part selection and additional information

When selecting components such as window frame seals, it is worth paying attention to compatibility with manufacturer markings, vehicle placement, and body type. If you want to better understand the differences between original, aftermarket, and used parts, as well as their cost-effectiveness in specific repairs, check out the article Original, aftermarket, or used – which car parts are the most cost-effective?.

If you are planning a comprehensive repair or upgrade of the window and side seal zone in your Audi and need other elements from the same group, such as additional frame seals, trim moldings, or guide rail seals, check out the available parts in the Audi window seals and moldings category.