Volkswagen Passat B7 Estate Door Window Seal Gasket Rear Left N/S 3C9839431H

Visual condition of the part

The product shows signs of use visible in the photos.

Volkswagen Passat B7 Estate Door Window Seal Gasket Rear Left N/S is an original body component from the Window seals and trims group, designed for installation in the rear left section of the vehicle. It ensures a tight window guide, reduces wind noise, and supports the proper operation of the lifting mechanism, which translates into acoustic comfort and the aesthetics of the side body area.

Specifications and technical data

• SKU: 3C9839431H-1
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 3C9839431H
• Substitutable numbers: 3C9839431H, 3C9 839 431 H
• Location on the vehicle: Rear, Left
• Part type: Window Run Channel
• Category: Window Seals, Gaskets & Trims

Purpose and fitment

The presented seal has been designed specifically for the rear left window of the Passat B7 estate version, ensuring a proper fit to the shape of the door frame and factory mounting points. Its placement in the rear driver-side door area allows for maintaining a consistent body line and correct window pressure along the entire guide length.

The original origin from the Volkswagen brand means compliance with factory dimensional and material tolerances, which minimizes the risk of leaks, rattles, or unwanted vibrations while driving.

Function and benefits of installation

The window seal performs several key functions in the rear part of the body:

• creates a barrier against water and moisture in the contact zone between the window and the door frame,
• reduces wind noise and external noise at higher speeds,
• supports stable window guidance in the tracks,
• improves the visual consistency of the side body line.

By using a dedicated rear left window seal, you can restore proper sealing after window replacement, door repair, or side body renovation, without the need for compromise universal solutions.

Characteristics of the used part

The item comes from dismantling and has the status of used, which in practice means it retains its original geometry and compatibility while being more cost-effective compared to a new component. In the case of window seals, it is particularly important that the rubber profile and the shape of the trim are consistent with the factory design – using an original aftermarket part allows this to be achieved without interfering with the door structure.

For many Passat B7 estate users, choosing a used seal is a reasonable compromise between quality and budget, especially during comprehensive bodywork and paint repairs or restoration projects.

Installation zone and service application

The placement on the vehicle defined as rear – left clearly indicates that the component is intended for installation in the rear left door of the estate version. Such designation facilitates the selection of the correct seal during post-accident repairs, replacement of corroded or worn parts, and during the reconstruction of the side body after bodywork interventions.

The product will prove useful both in professional body repair shops and in workshops specializing in the restoration of VAG group cars, where maintaining the factory standard of fit and sealing is crucial.

Offer expansion and knowledge about used parts

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

If you want to consciously approach the selection of aftermarket components and better understand which body and equipment parts are worth buying as used, the following article will be helpful: Renovation and repair of German cars – which used parts are worth buying and which are better to avoid?.