Audi A6 C6 Avant Front Window Glass Weatherstrip Seal Right O/S 4F0839478A

Audi A6 C6 Avant Front Window Glass Weatherstrip Seal Right O/S is an original body component from the Window seals and trims group, designed for installation on the passenger side. It ensures a tight window guide, reduces wind noise, and protects the interior from moisture, supporting the proper operation of the window lifting mechanism. It is a practical solution for users who want to restore the factory functionality and aesthetics of the side window area in an Audi A6 C6 Avant.

Specifications and technical data

• SKU: 4F0839478A
• Mark: Audi
• Condition: Used
• OEM Part Number: 4F0839478A
• Substitutable numbers: 4F0839478A, 4F0 839 478 A
• Location on the vehicle: Front, Right
• Part type: Window Seal
• Category: Window Seals, Gaskets & Trims

Purpose and function in the bodywork

The presented seal is matched to the front side window on the right side of the Audi A6 C6 Avant. The component operates in the door frame area, stabilizing the window during opening and closing and reducing its vibrations. This improves the acoustic comfort of the cabin, as well as the tightness of the connection between the window and the bodywork.

The seal works with the factory window lifting mechanism, which allows for maintaining the correct path of its movement. Proper fit of the shape and profile translates into even pressure of the window against the door frame, which is important both for protection against water and for the durability of the entire system.

Benefits of using an original Audi seal

Using an original Audi component in the front side window area brings a number of practical benefits:

• maintaining factory geometry and fit within the door frame,
• reduction of wind noise at higher speeds,
• better protection against water and moisture ingress into the door interior and cabin,
• stable window guidance in the tracks, which reduces the risk of it becoming misaligned.

Thanks to this, replacing a worn or damaged seal with an original component allows you to restore the comfort of using the vehicle and improve the overall operation of the passenger-side door. This is especially important in cars used on a daily basis, where tightness and proper window guidance have a direct impact on driving comfort.

Installation characteristics and fitment

The seal has been designed specifically for the Avant body in the A6 C6 generation, taking into account the shape of the front door frame on the right side. The appropriate profile facilitates installation in the original mounting points, without the need for modifications or fitting a universal component.

When replacing, it is recommended to thoroughly clean the contact surface in the door frame and check the condition of the window guides. A properly seated seal works with existing body components, which allows for maintaining the structural and aesthetic consistency of the entire door area.

Application in service and restoration

This component is particularly useful for work related to:

• eliminating leaks in the front side window area,
• reducing cabin noise coming from the passenger door area,
• door restoration after body and paint repairs,
• restoring the factory appearance and functionality of the window area.

For workshops specializing in the Audi brand and users servicing the vehicle themselves, using an original seal means predictable fitment and compliance with the body structure. It is a practical solution for comprehensive door and window maintenance in the A6 C6 Avant model.

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

If you want to better understand how to select used components by OEM numbers and what to pay attention to when installing body and equipment elements, the Global Parts guide may be helpful – Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?, which discusses practical principles for selecting and verifying second-hand parts.