Seat Ibiza Mk5 Seal Gasket Window Frame Guide Rail Rear Left N/S 6F0839431K

Seat Ibiza Mk5 Seal Gasket Window Frame Guide Rail Rear Left N/S is a precisely fitted component from the Window seals and trims group, designed for installation in the rear left section of the vehicle body. It is responsible for the tight seating of the window, noise reduction, and protecting the interior from moisture and contaminants, ensuring stable operation of the entire window assembly. This solution is dedicated to users who want to restore the factory sealing parameters in their vehicle.

Specifications and technical data

• SKU: 6F0839431K
• Mark: Seat
• Condition: Used
• OEM Part Number: 6F0839431K
• Substitutable numbers: 6F0839431K, 6F0 839 431 K
• Location on the vehicle: Rear, Left
• Rim width: 6
• Category: Window Seals, Gaskets & Trims

Purpose and function in the bodywork

The described seal is a component of the rear window frame on the left side, operating in the body area responsible for protecting the passenger cabin. Its task is to:

• maintain a stable position of the window in the frame,
• limit the ingress of water and dust into the interior,
• reduce wind noise while driving,
• support the proper operation of mechanisms associated with the rear window.

Thanks to its proper profile and fit to the specific body model, the seal allows for maintaining the structural integrity of the rear part of the vehicle and improves acoustic comfort in the cabin.

Construction and fitment

The rear window frame seal has been designed as a component that works with the factory frame and window, which translates into predictable behavior during installation and operation. The design of the element takes into account:

• a profile matched to the geometry of the rear left part of the body,
• a shape enabling uniform adhesion to the window and frame,
• compatibility with factory mounting points.

Such a solution promotes maintaining proper tightness and minimizes the risk of stress in the glass, which is important from the point of view of the durability of the entire window assembly.

Installation characteristics

The seal is intended for installation in the rear left part of the vehicle, in the window frame area. With a properly prepared mounting surface, it enables:

• recreating the factory adhesion line of the window to the body,
• obtaining uniform pressure around the entire circumference of the frame,
• reducing the risk of leaks at critical corner points.

A well-chosen rear window frame seal affects the stability of the window installation and the aesthetics of the connection between the glass and the body, which is significant both in terms of utility and appearance.

Application in service practice

The element will prove particularly useful in situations where the existing seal shows signs of wear, such as window fogging from the inside, streaks appearing around the frame, or increased noise at higher speeds. Replacing it with a properly fitted seal allows you to:

• restore the correct operating conditions of the rear window,
• increase acoustic comfort in the interior,
• reduce the risk of corrosion around the body edges.

For users who care about the technical condition of the bodywork, this is a practical way to maintain the proper level of protection against external factors.

Integration with other body components

The rear window frame seal works with the window, the body frame, and surrounding trim strips. A correctly chosen component helps maintain the consistency of the side and rear lines of the vehicle, and also supports the work of neighboring elements, such as decorative strips or covers. Thanks to this, it is possible to maintain a uniform finish standard throughout the rear part of the car.

If you are planning a comprehensive repair or upgrade of the rear glazing zone in your Seat and need other elements from the same group, such as additional frame seals, window trims, or finishing elements around the windows, check the available parts in the Seat window seals and trims category.

For those interested in a broader context of operation and selection of components in cars, including an analysis of the costs of aftermarket parts, an article comparing popular BMW power units may be helpful – you can find it here: BMW N47 vs M57 / M57N / M57N2 – a ranking of legendary diesels.