Audi A4 RS4 B8 Rear Left N/S Door Window Glass Inner Chrome Strip Seal 8K9839439G

Audi A4 RS4 B8 Rear Left N/S Door Window Glass Inner Chrome Strip Seal is a precision component from the Doors and door panels category, designed specifically for the rear left section of the vehicle body. As an original Audi component, it ensures proper window guidance and stable sealing of the door edge, which translates into acoustic comfort and the correct operation of the window lifting mechanism.

Specifications and technical data

• SKU: 8K9839439G
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K9839439G
• Substitutable numbers: 8K9839439G, 8K9 839 439 G
• Location on the vehicle: Rear, Left
• Color: Chrome
• Category: Doors & Door Skins

Purpose and function of the component

The presented window guide with seal is dedicated for installation in the rear left part of the body, within the passenger door area. It is responsible for stable vertical guidance of the glass pane, reducing operational play, and maintaining proper pressure of the window against the door frame. This reduces the risk of rattling, vibrations, and leaks while driving.

The component works in direct contact with the glass, which is why its proper shape and fit are crucial for the smooth operation of the lifting and lowering mechanism. In case of wear or deformation of the guide, typical symptoms appear, such as heavier window operation, improper closing, or increased noise in the cabin – replacing it with an original component restores correct performance parameters.

Construction, color, and fitment

The door seal integrated with the window guide has been designed for the specific dimensions of the door frame in Audi A4 / RS4 B8 generation models. The construction ensures proper adhesion to the edge of the door panel and the glass surface, which limits the ingress of water and contaminants into the door interior.

The Chrome finish allows for aesthetic integration of the element into the side line of the body, especially in versions equipped with chrome details. Visual consistency with other strips and window surrounds is important both from a styling perspective and for maintaining the factory character of the vehicle.

Installation characteristics

The door seal with window guide has been prepared as an element intended for installation in the factory location, without the need for modifying the door structure. Properly shaped mounting profiles allow for correct seating in the frame, which shortens work time and facilitates maintaining the proper geometry of the window guidance.

Due to the specific placement in the vehicle, the component is intended exclusively for the rear left side of the body. Using the correct installation side is crucial for maintaining tightness and proper pressure of the window against the seal along the entire perimeter.

Condition and benefits of choosing a used part

The offered window guide with seal comes from the used parts segment, which allows for economical repair while maintaining the manufacturer's original specifications. Choosing such a solution is particularly beneficial for vehicles used on a daily basis, where a reasonable balance between cost and functionality is important.

If you want to better understand how to consciously choose components from the secondary market and what to pay attention to when purchasing, check out the guide Used parts – Your guide to the best offers in the automotive store, which discusses practical aspects of selecting and using such elements.

Expanding the door zone and related elements

If you are planning a comprehensive repair or modernization of the door zone in your Audi and need other elements from the same group, such as panels, reinforcements, or additional strips, check the available parts in the Audi Doors and door panels category.

Selecting components from one construction group allows for maintaining technical and visual consistency, and also facilitates subsequent adjustment of door fitment, window operation, and seals. Thanks to this, the entire side area of the body can operate in a predictable manner consistent with the manufacturer's assumptions.