Seat Altea XL Door Window Seal Gasket Weatherstrip Rear Left N/S 5P8839431

The Left Rear Door Window Seal for Seat Altea XL is a precisely fitted body component responsible for the sealing and protection of the window edge in the rear left door. As an original Seat component, it ensures proper adhesion to the car body and stable window guidance within its track. This is a practical solution for users looking to restore the correct operation of the window mechanism and reduce noise and moisture ingress into the vehicle's interior.

Specifications and technical data

• SKU: 5P8839431
• Mark: Seat
• Condition: Used
• OEM Part Number: 5P8839431
• Substitutable numbers: 5P8839431, 5P8 839 431
• Location on the vehicle: Rear, Left
• Rim width: 6
• Category: Window Seals, Gaskets & Trims

Intended Use and Function in the Vehicle

The presented seal is designed for installation in the rear left door of the Seat Altea XL model. It is responsible for:

• Sealing the contact between the window and the door frame,
• Protecting the door interior from water and dirt,
• Stabilizing the window during raising and lowering,
• Reducing wind noise while driving.

Thanks to its proper profile, the seal works with the factory window lifting mechanism, contributing to smoother window operation and reduced load on components.

Construction and Fitment

This element belongs to the Window Seals and Trim group, meaning it is designed for a tight fit against the window edge and door frame. The shape and geometry of the seal are adapted to the specific body model, which facilitates installation and maintains the factory fit of the components.

The appropriate stiffness of the profile and the flexibility of the material promote even pressure along the entire length of the window. In practice, this translates to:

• More predictable window behavior in the track,
• Reduced risk of creaks and play within the door frame,
• Maintaining the aesthetic body line in the window area.

Condition and Benefits of Using a Used Part

The seal is offered as a used part, allowing for economical repair while maintaining the original manufacturer's specifications. For elements of this type, maintaining the correct shape and flexibility is crucial, enabling continued effective window sealing.

Using an original seal from a dismantled vehicle is a good solution when:

• The factory seal is hardened or cracked,
• There are leaks and moisture appears around the door,
• Distinct wind noise is audible in the rear part of the vehicle while driving.

Compatibility and Installation Area

The element is intended for installation in the rear left part of the body, within the passenger door. Proper seating of the seal in the door frame restores the factory window adhesion line, which is important for both acoustic comfort and protection of the interior from external factors.

Correct fitment to the specific body model reduces the need for modifications and allows for installation in accordance with the manufacturer's original technology, which is particularly important for vehicles used daily.

Expansion of Modernization for Seat Windows and Seals

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

For drivers interested in a broader perspective on the operation of used market components and the impact of component condition on the durability of the drivetrain, a guide on used differentials and drive components may be helpful, available in the article Second-hand Differentials – What You Should Know About Used Differentials.