Volkswagen Golf Mk5 1K Door Window Guide Seal Rear Left N/S 1K6839431G

Volkswagen Golf Mk5 1K Window Regulator Seal Rear Left Door is a precisely fitted component from the Door Seals category, designed for the rear left side of the body. It is responsible for stable window guidance and reducing noise and moisture, which translates into a more comfortable and quieter ride. Thanks to its construction compliant with manufacturer standards, this seal allows for a technically correct repair of the factory window guiding system.

Specifications and technical data

• SKU: 1K6839431G
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 1K6839431G
• Substitutable numbers: 1K6839431G, 1K6 839 431 G
• Location on the vehicle: Rear, Left
• Category: Door Seals

Purpose and Function in the Rear Left Door

The window regulator seal in the rear left door is responsible for the correct vertical guidance and stabilization of the window during raising and lowering. This component works with the window regulator mechanism, ensuring:

• keeping the window within the guide axis, without unwanted play,
• reducing vibrations and rattles when driving over uneven surfaces,
• sealing the space between the window and the door structure.

Thanks to its proper profile and fit for the specific body model, the seal helps maintain the factory window operation characteristics and improves overall acoustic comfort inside the vehicle.

Benefits of Using an Original Regulator Seal

Using a component that matches the vehicle manufacturer's solution allows for maintaining the structural integrity of the door. In practice, this means:

• correct fit with the door frame and other window guiding elements,
• maintaining the window operation geometry as intended by the manufacturer,
• reduced risk of jamming, misalignment, and excessive load on the window regulator mechanism.

The window regulator seal, specifically designed for the rear left side, is structurally prepared for operation in this particular body location, which facilitates installation and reduces the need for additional adjustments.

Component Condition and Installation Aspects

The offered seal is a used part, which allows for maintaining the original geometry and operating characteristics intended for this door model. This type of component is particularly useful for repairs after mechanical damage to the regulator, problems with window closing, or the appearance of excessive noise around the rear left window.

During installation, it is recommended to:

• thoroughly clean the guide channel in the door,
• check the condition of the window regulator mechanism,
• verify the smooth movement of the window after installing the seal.

This approach allows for restoring the correct operation of the entire window lifting system and reducing the need for further service interventions.

Application in Service and Body Repairs

The rear left window regulator seal is often replaced during:

• repairs after collisions involving the rear left door,
• restoration of the window lifting system,
• elimination of leaks and excessive air noise in the rear part of the cabin.

For workshops specializing in the Volkswagen brand and for DIY vehicle owners, using a dedicated window regulator seal allows for a technically correct restoration of the door's factory condition and maintenance of proper driving comfort.

If you are modernizing or repairing the window system in your Volkswagen and need other components related to sealing and guiding windows in doors of this brand, check the available parts in the Volkswagen Door Seals category.

For car owners interested in improving sound characteristics and performance through exhaust system modifications, useful information can be found in the article Used Mini John Cooper Works Pro Sport Exhaust – A Legal Way to Get a Race-Car Sound and +7 HP, which discusses practical aspects of selecting and installing used tuning components.