Audi A4 B8 Rear Door Seal Aperture Gasket Rubber Left N/S Inner 8K0839479C

Audi A4 B8 Rear Door Seal Aperture Gasket Rubber Left N/S Inner is a precisely fitted component from the Door seals group, designed for installation in the rear left door of the vehicle. The original design ensures proper window guidance, noise reduction, and effective protection against water and contaminants, which translates into stable operation of the window lifting mechanism and acoustic comfort inside the vehicle.

Specifications and technical data

• SKU: 8K0839479C
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0839479C
• Substitutable numbers: 8K0839479C, 8K0 839 479 C
• Location on the vehicle: Rear, Left
• Category: Door Seals

Purpose and function of the window scraper seal

The window scraper seal in the rear left door is responsible for the controlled drainage of water from the glass surface and limiting the ingress of dirt into the door interior. Thanks to a properly profiled working edge, the element stabilizes the glass in the guides, reduces the risk of scratches, and supports the smooth operation of the window regulator.

In the case of the Audi A4 B8, a correctly selected window scraper seal is important not only for protecting the paint and glass but also for maintaining the correct door closing geometry and the tightness of the entire side body area.

Construction and fitment for Audi A4 B8

The presented seal has been designed specifically for installation in the rear left door, taking into account the characteristic body line of the Audi and the shape of the window frame. The appropriate stiffness of the profile and the flexibility of the working edge facilitate installation and ensure stable adhesion to the glass during the operation of the lifting mechanism.

The original origin from the Audi brand means maintaining factory dimensional tolerances, which translates into proper fitment with the door panel, moldings, and other seals. This minimizes the risk of unwanted air noise and localized leaks.

Characteristics of the used element

The offered seal comes from the secondary market, which allows for an economical replacement of the element while maintaining the manufacturer's original specifications. The used component is a good solution in situations where the existing seal shows signs of wear, such as loss of flexibility, local cracks, or leaks in the area of contact with the glass.

Using an original, used window scraper seal allows for maintaining material consistency with other door elements, which is important for service repairs and maintaining compliance with the vehicle's factory design.

Benefits of using an original window scraper seal

• Better protection of the window lifting mechanism against water and contaminants.
• Noise reduction in the cabin thanks to stable window guidance.
• Consistent fit to the door line and other factory seals.
• Ability to restore proper window operation after damage or wear of the old seal.

By maintaining the original geometry of the element, it is possible to effectively recreate the factory operating conditions of the window in the rear left door, which is important for both user comfort and the durability of the entire system.

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 additional seals, window moldings, or soundproofing elements, check the available parts in the Audi door seals category.

To better understand the importance of using original components in vehicles of this brand and the principles of selecting used elements by identification numbers, it is worth reading the article Audi five-cylinder engine – a legend from Quattro to RS3 and how to take care of it using original Audi parts, which discusses practical tips regarding the selection of OEM parts.