Seat Leon Mk3 Window Moulding Door Front Right O/S Seal Gasket 5-Door 5F4837472

Seat Leon Mk3 Window Moulding Door Front Right O/S Seal Gasket is an original body component designed for precise sealing of the passenger-side window. Thanks to its factory-fit for the specific model, it ensures stable window guidance, reduces wind noise, and helps maintain proper cabin sealing. It is a practical solution for post-collision repairs, door replacements, or bodywork restoration.

Specifications and technical data

• SKU: 5F4837472
• Mark: Seat
• Condition: Used
• OEM Part Number: 5F4837472
• Substitutable numbers: 5F4837472, 5F4 837 472
• Location on the vehicle: Front, Right
• Part type: Window Seal
• Category: Window Seals, Gaskets & Trims

Purpose and function in the vehicle

The presented seal belongs to the Window seals and mouldings category and is designed for installation in the front right door of a five-door third-generation Seat Leon. The component is responsible for:

• sealing the contact point between the window and the door frame on the passenger side,
• limiting the ingress of water and contaminants into the door interior,
• reducing wind noise at higher speeds,
• stable window guidance in the track during raising and lowering.

Due to its correct profile, the seal works in harmony with the window regulator mechanism, which translates into smoother operation and reduced stress on moving parts.

Original origin and fitment

The seal was developed by the vehicle manufacturer, which means it is an original Seat brand component. Its factory origin ensures:

• shape compatibility with the door line and window frame of the Leon Mk3,
• proper adhesion to the metal and glass without the need for modifications,
• compatibility with factory mounts and door clips.

The item is offered as a used part, which in many cases provides a cost-effective solution while maintaining the proper standard of fitment and functionality.

Service application and benefits of replacement

Replacing the window frame seal in the front right door is recommended when symptoms such as increased cabin noise, water ingress into the door, or noticeable window play in the track occur. Using an original seal allows you to:

• restore the factory level of sealing for the side body section,
• reduce the risk of corrosion inside the door caused by moisture,
• improve acoustic comfort inside the vehicle,
• stabilize window operation and reduce the risk of misalignment.

This is particularly important after body and paint repairs, or door/window replacement, when it is necessary to restore the correct geometry and sealing of the entire door assembly.

Condition of the item and installation aspects

The offered seal is in used condition, meaning it has been removed from a vehicle and may show signs of wear typical for this type of part, while retaining the functionality required for further use. Installation requires removing the door trim and carefully extracting the old seal so as not to damage the paint or the metal edges.

Due to the specific shape of the front right door frame in the Leon Mk3, it is recommended to align the seal according to the factory path along the door perimeter, checking the fitment along its entire length. A correctly installed component ensures even pressure on the glass and stable guidance throughout its entire range of motion.

Expanding the scope of repair and additional materials

If you are planning a comprehensive repair or upgrade of the side window and door area in your Seat and need other elements from the same group, such as additional frame seals, trim strips, or window guides, check the available parts in the Seat window seals and mouldings category.

When planning broader service work on the vehicle, it is also worth checking out practical tips regarding the selection and replacement of electrical components – the article When is it worth replacing an alternator with a used one: a practical guide for drivers may be helpful, as it shows how to make informed decisions about using parts from the secondary market.