Seat Altea XL Rear Door Window Seal Right O/S Gasket Weatherstrip 5P8839478B

The Right Rear Door Window Seal for Seat Altea XL is a precisely profiled body component responsible for the sealing and stable guidance of the window in the rear right door. Thanks to its adaptation to the specific Seat model and factory geometry, this original window seal provides proper protection against water, noise, and air turbulence during driving.

Specifications and technical data

• SKU: 5P8839478B
• Mark: Seat
• Condition: Used
• OEM Part Number: 5P8839478B
• Substitutable numbers: 5P8839478B, 5P8 839 478 B
• Location on the vehicle: Rear, Right
• Rim width: 6
• Category: Window Seals, Gaskets & Trims

Purpose and Function in the Body

The presented seal is intended for installation in the rear right area of the body, within the passenger door. It is responsible for guiding and sealing the window, stabilizing it in the runner and limiting the penetration of water, dust, and noise into the cabin. A correctly selected seal minimizes the risk of window fogging, leaks, and unwanted window vibrations during driving.

Construction and Fit for Seat Altea XL

This element belongs to the group of Window and Trim Seals, meaning it has been designed for direct contact with the window and door frame. The seal's profile is adapted to the body shape of the Seat Altea XL, ensuring predictable installation without the need for body modifications. The appropriate rigidity and flexibility of the material allow for a secure fit in the door recess and maintain a stable window position throughout its range of operation.

Technical Characteristics and Installation

The seal works with the window in the rear right part of the vehicle, ensuring its proper vertical guidance and limiting lateral play. The element's construction is prepared for operation under typical passenger car conditions – temperature changes, humidity, and dynamic loads resulting from driving and door closing. The product is from a dismantled vehicle, which allows for factory-level fit to the door and window, while also offering a cost-effective solution compared to new parts.

Practical Application and Benefits of Replacement

Replacing a worn or damaged rear right door window seal is recommended in case of leaks, increased noise, problems with smooth window movement, or visible cracks and deformations in the rubber. Using an original element from the same Seat model group restores proper body sealing, improves acoustic comfort, and reduces the risk of corrosion around the door edges. This is particularly important for daily car use, where regular door opening and closing intensely stresses the entire window-seal assembly.

Compatibility with Other Seat Body Components

The seal works in conjunction with other door components – the window, the lifting mechanism, and the interior and exterior trim strips. As such, it forms an integral part of the system protecting the interior from external factors. In the case of extensive door repairs or comprehensive window area renovation, it is worth paying attention to the consistency of all elements from this group to avoid stress and leaks resulting from mixing parts of different origins.

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

For drivers interested in more advanced body modifications or improving window functionality, practical tips on selecting and installing used components may also be useful – you can find them in the article Best Used Parts for Your Car Tuning.