Audi A6 C8 Rear Door Window Seal Gasket Strip Black Outer Left N/S 4K0839475

Visual condition of the part

The product shows signs of use visible in the photos.

Audi A6 C8 Rear Door Window Seal Gasket Strip Black Outer Left N/S is a precisely fitted body component responsible for effectively draining water from the window and ensuring stable guidance within the channel. Thanks to its factory profile and appropriate shape, the strip ensures smooth operation of the window lifting mechanism and limits the ingress of contaminants into the door interior. This is a practical solution for users who want to restore the proper sealing function in the rear left door area of their Audi A6 C8 while maintaining a consistent, aesthetic appearance of the side body line.

Specifications and technical data

• SKU: 4K0839475
• Mark: Audi
• Condition: Used
• OEM Part Number: 4K0839475
• Substitutable numbers: 4K0839475, 4K0 839 475
• Location on the vehicle: Rear, Left
• Part type: Window Seal
• Color: Black
• Category: Window Seals, Gaskets & Trims

Purpose and function of the window seal strip

The described strip is designed for installation on the rear left door of the Audi A6 C8 generation. Its task is to mechanically "wipe" water from the window surface during raising and lowering, as well as to limit the ingress of dust, mud, and small particles into the door interior. A properly selected seal strip:

• stabilizes the window in the guide during the operation of the lifting mechanism,
• reduces the risk of fogging and moisture in the door area,
• protects the paint and metal elements against accelerated corrosion resulting from standing water.

By maintaining the factory profile, the element works well with the window and other door seals, which translates into predictable behavior of the entire system.

Construction, color, and fitment

The strip has a design adapted to the outer edge of the window in the rear left door, which facilitates installation in the original mounting points. The black color allows for a consistent connection with factory body trim elements, regardless of the paint color, and does not introduce visual differences in the window line. The use of the correct sealing profile within the Window seals and strips category ensures even pressure against the glass and stable guidance of its edge.

Performance characteristics of the used component

The offered strip comes from the secondary market, which means it is a used part that retains the functionality required for further operation. This type of component is a good choice in a situation where the existing strip has suffered mechanical damage, deformation, or wear, and the user expects a reasonable compromise between cost and maintaining the original fitment. Choosing a dismantled part allows you to maintain compatibility with the factory geometry of the door and window, without the need to use replacements with an uncertain profile.

Benefits of using an original strip in the Audi A6 C8

Using a seal strip dedicated to the Audi A6 C8 brings a number of practical benefits:

• Reduction of cabin noise – proper adhesion to the window reduces air noise in the rear part of the body.
• Better protection of the door interior – less water and dirt entering the inside translates into a longer service life for the window lifting mechanisms.
• Consistent appearance of the car's side line – the black, outer strip maintains the factory character of the finish.
• Maintaining the correct operation of the window in the guides, which is important for daily vehicle use.

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

Additional information and selection of used parts

When choosing components from the secondary market, it is worth paying attention to the structural compatibility with the specific body version and the condition of the working surface of the strip that comes into contact with the window. Proper selection of the component allows you to avoid problems with leaks, excessive noise, or the window jamming during mechanism operation. If you want to better understand when choosing used components is justified and how to minimize risks when purchasing them, the following article may be helpful: The second life of electronics – when is it worth opting for used engine controllers, comfort modules, and parking sensors?.