Volkswagen Polo 6R Rear Door Window Seal Inner Gasket Left N/S 6R6839431C

Volkswagen Polo 6R Rear Door Window Seal Inner Gasket Left N/S is an original body component from the Protective and decorative moldings group, designed for the rear left area of the vehicle. It ensures a tight window guide, reduces wind noise, and protects the door edge from adverse external conditions, improving acoustic comfort and the aesthetics of the side body section.

Specifications and technical data

• SKU: 6R6839431C
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 6R6839431C
• Substitutable numbers: 6R6839431C, 6R6 839 431 C
• Location on the vehicle: Rear, Left
• Category: Body Mouldings & Trims

Function and application in the Volkswagen Polo 6R

The presented seal is a component intended for installation in the rear left part of the body, in the door and window guide area. It is responsible for:

• stable window guidance in the channel during raising and lowering,
• preventing water and contaminants from entering the door interior,
• reducing wind noise and vibrations while driving,
• protecting the sheet metal edge and door trim from abrasion.

Thanks to its fitment to a specific body zone, the seal works in conjunction with the factory window lifting mechanism and other door trim elements, which translates into stable window operation and predictable behavior of body components.

Construction and fitment of the component

The seal was designed as an original part for the Volkswagen brand, which means maintaining the correct profile, flexibility, and geometry in the contact area with the window and door frame. The shape and length are adapted to the specific Polo 6R body model, ensuring that:

• the sealing line matches the factory door contour,
• there is no need for trimming or adjustments on the vehicle,
• visual consistency with other trim elements is maintained.

The appropriately selected material hardness allows for a balance between sealing performance and ease of window operation, which is essential for the durability of the lifting mechanism and user comfort.

Characteristics of the used component

The offered seal is a used component, which in practice means it has been removed from a vehicle and was previously in service. This type of part is a good choice when you want to maintain the original manufacturer's specifications while optimizing the costs of door repair or restoration. A used component allows for:

• maintaining factory fitment to the door frame and window,
• reducing the risk of installation issues typical of aftermarket replacements with different profiles,
• more economical repair compared to a new OEM part.

For many users, this is a reasonable compromise between quality and budget, especially during comprehensive work on the rear part of the body.

Benefits of using an original seal

Using an original door window seal in the Volkswagen Polo 6R translates into a number of practical benefits in daily use:

• Better cabin sealing – reduction of air drafts and noise at higher speeds.
• Protection of the door interior – lower risk of moisture and dirt accumulation in the window mechanism area.
• Stable window operation – proper guidance in the seal channel reduces the load on the lifting mechanism.
• Consistent body appearance – maintaining the factory contact line between the window and the door frame.

As a result, replacing a worn or damaged seal with an original component helps restore vehicle comfort and reduce the risk of further faults within the door area.

Expanding work in the side body area

If you are planning a comprehensive repair or upgrade of the side body area of your Volkswagen and need other components from the same group, such as covers, overlays, or additional moldings, check out the available parts in the Volkswagen protective and decorative moldings category.

For users interested in a broader approach to vehicle modification, including improving exhaust sound and performance, a guide article describing the selection and installation of a second-hand sports exhaust system may be helpful – you can find it here: Used Mini John Cooper Works Pro sports exhaust – a legal way to get a sporty sound and +7 HP.