Audi A3 8V Sportback 5dr Window Guide Channel Rear Right O/S Seal 8V4839440B

Audi A3 8V Sportback 5dr Window Guide Channel Rear Right O/S Seal is an original component from the Door seals group, designed for the rear right side of the body in the Audi A3 8V Sportback model. The precisely shaped sealing profile helps reduce noise, improves cabin acoustic comfort, and supports the protection of the interior against moisture and contaminants.

Specifications and technical data

• SKU: 8V4839440B
• Mark: Audi
• Condition: Used
• OEM Part Number: 8V4839440B
• Substitutable numbers: 8V4839440B, 8V4 839 440 B
• Location on the vehicle: Rear, Right
• Part type: Door Seal
• Category: Door Seals

Purpose and function of the window guide channel seal

The presented seal works within the window guide of the rear right door, stabilizing the window during raising and lowering and reducing its vibrations. Thanks to the properly selected geometry and material flexibility, the component ensures:

• better adhesion of the window to the door frame,
• reduction of wind noise at higher speeds,
• increased protection against water and dust entering the door interior,
• smoother operation of the window lifting mechanism.

Using an original seal in this location is important for maintaining factory driving comfort and the proper operation of the entire window system in the rear right door.

Why it is worth choosing an original Audi component

The window guide channel seal dedicated to the Audi A3 8V Sportback has been designed for the specific geometry of the door and window frame. This means that:

• the seal profile is matched to the shape of the body,
• the contact pressure against the window and frame is optimized for tightness,
• installation is predictable, without the need for modifications.

As a result, the acoustic and performance parameters intended by the vehicle manufacturer are maintained. Original Audi Door seals reduce the risk of leaks, rattles, or window jamming, which often occur with non-original parts.

Condition of the component and benefits of using a used part

The offered seal is a used component, which allows for a reasonable repair cost while maintaining the manufacturer's original specifications. In the case of door seals, it is particularly important to maintain the proper shape and material flexibility – using an original component from disassembly often ensures a better fit than new replacements with a universal profile.

Replacing a worn or damaged window guide channel seal with a functional element of this type can:

• reduce window fogging by limiting moisture ingress,
• reduce unwanted noises from the door area,
• improve comfort for rear-seat passengers, especially during highway driving.

Compatibility and vehicle placement

The seal is intended for installation in the rear right part of the body, in the passenger door on the side opposite to the driver. Such a clear definition of vehicle placement facilitates the selection of the correct component for accident repairs, replacement of corroded doors, or when eliminating leaks in a specific corner of the body.

Before purchasing, it is worth verifying the body compatibility (Sportback, 5-door) and the A3 model generation to ensure a full fit of the seal to the door frame and window guide.

Support with selection and expanding the scope of repairs

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 perimeter seals, threshold seals, or additional guide profiles, check the available parts in the Audi Door seals category.

For extensive body and equipment service work, it is also worth taking care of proper vehicle lighting – practical tips on selecting used headlights and accessories can be found in the article See more and better – a complete guide to selecting and replacing used LED and Xenon headlights.