Volkswagen Passat CC B6 Rear Door Window Seal Inner Gasket Left N/S 3C8839471C

The Volkswagen Passat CC B6 Left Rear Door Window Seal is a precisely fitted body component responsible for the sealing and stable guidance of the window. Its original design, dedicated to the rear left side of the body, ensures proper adhesion to the door frame, reducing noise, vibrations, and moisture ingress into the vehicle's interior. This is a practical solution for users who want to restore the factory operating parameters of the side window in a technically correct manner.

Specifications and technical data

• SKU: 3C8839471C
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 3C8839471C
• Substitutable numbers: 3C8839471C, 3C8 839 471 C
• Location on the vehicle: Rear, Left
• Part type: Window Seal
• Category: Window Seals, Gaskets & Trims

Purpose and Fitment

The presented seal has been specifically designed for the rear left side of the body, ensuring proper interaction with the door structure and window regulator in the Volkswagen Passat CC B6. Its dedicated placement on the vehicle minimizes the risk of leaks, squeaks, or improper window closing, which often occur when using universal parts.

The appropriately profiled shape of the seal supports stable vertical window guidance, which is important for both acoustic comfort and the durability of the lifting mechanism. Therefore, replacing the component allows for the controlled and predictable restoration of operating conditions intended by the vehicle manufacturer.

Protective Function and Operation

The inner window seal plays a crucial role in protecting the door interior and cabin from water, dust, and contaminants. A correctly selected component limits moisture ingress into the panel, reducing the risk of corrosion, window fogging, and accelerated wear of the lifting mechanisms. Proper sealing also contributes to more stable operating conditions for the electrical system located within the door.

Replacing a worn seal with an original part from the same construction group is particularly important for vehicles operated in variable weather conditions. This helps maintain the cohesion of the body system and reduces subsequent costs associated with repairing the consequences of leaks, such as corrosion or upholstery damage.

Characteristics of a Used Part

The offered seal is a used part, meaning it comes from disassembly and has been previously operated in a vehicle. Such components are often chosen by users looking for solutions with a favorable price-to-quality ratio, while maintaining the original construction and fit for a specific model. In practice, this allows for a technically correct repair without the need to resort to aftermarket replacements of uncertain profile.

Before installation, a standard inspection of the working surfaces and proper seating in the door frame is recommended to fully utilize the sealing potential and ensure even pressure on the window along its entire length. This approach supports stable and predictable operation over a longer period of use.

Assistance with Selection and Extended Repair Scope

If you are planning a comprehensive repair or upgrade of the side glazing area in your Volkswagen and need other parts from the same group, such as additional seals, trim strips, or window guides, check the available parts in the Volkswagen Window Seals and Trim category.

If you have doubts about whether using a used part is appropriate for your scope of work, it may be helpful to compare new and used solutions in terms of cost, durability, and availability. This topic is discussed in more detail in the article Car Parts – New or Used? Comparing Costs, Quality, and Durability, which can provide practical support when planning a vehicle repair or upgrade.