Seat Leon Mk3 5F Rear Door Inner Window Seal Strip Left N/S 5F4839471

Seat Leon Mk3 5F Door Inner Window Seal Strip Rear Left N/S is a precisely fitted body component, designed specifically for the rear left side of the vehicle. Thanks to its factory geometry, it ensures a tight window guide, reduces cabin noise, and helps maintain the stable operation of the window lifting mechanism. This is a practical solution for users who want to technically restore the proper sealing of the door.

Specifications and technical data

• SKU: 5F4839471
• Mark: Seat
• Condition: Used
• OEM Part Number: 5F4839471
• Substitutable numbers: 5F4839471, 5F4 839 471
• Location on the vehicle: Rear, Left
• Part type: Door Seal
• Category: Door Seals

Purpose and fitment

The presented Seat Leon Mk3 5F Door Inner Window Seal Strip Rear Left N/S is designed for the third-generation Seat Leon (5F) model and is mounted on the rear left side of the body. The component's design is adapted to the shape of the door frame and the window guide, allowing for secure seating in the original mounting points without the need for modifications. Such fitment promotes the maintenance of factory assembly clearances and proper pressure against the glass surface.

Function in the door and window system

The seal performs several important operational functions:

• stabilizes the edge of the window during raising and lowering, reducing its vibrations,
• creates a barrier for water and contaminants entering the interior of the door,
• reduces air noise and rattling coming from the window area,
• supports the smooth operation of the window regulator mechanism.

As a result, replacing a worn or damaged seal with a functional component allows for improved acoustic comfort, as well as reducing the risk of accelerated corrosion of internal door components.

Characteristics of the original Seat component

The offered seal belongs to the Door seals group and comes from the Seat parts line. This means maintaining factory geometry, appropriately selected rubber compound hardness, and a working profile matched to the glass and door frame. In practice, this translates into:

• a consistent look of the window edge relative to the other doors,
• proper pressure against the glass along its entire length,
• compatibility with factory clips and guides.

Original origin also facilitates easier diagnostics of potential leaks – after installation, one can rely on factory service procedures without the need to adjust aftermarket replacements.

Condition and service application

The item is offered in a used condition, which allows for an economical repair of the door zone while maintaining the original specification. This type of seal is particularly useful in situations where the existing component is:

• cracked or deformed due to wear and tear,
• damaged after a collision or bodywork intervention,
• worn out and causing increased noise or water ingress.

Replacing it with a functional seal allows for restoring proper window guidance and reducing unwanted noises while driving, which is important both in daily use and when preparing the car for sale.

Support with selection and repair expansion

If you are planning a comprehensive repair or upgrade of the door zone in your Seat and need other elements from the same group, such as sealing strips, inner frame seals, or additional soundproofing profiles, check the available parts in the Seat door seals category.

For drivers considering wider use of dismantled parts in premium segment cars, information contained in the article about the advantages of original used components may be useful – you can find more on this topic in the material about used parts for Mercedes from dismantling.