BMW F01 LCI Door Window Finisher Top Frame Seal Rear Left N/S 7177953

BMW F01 LCI Door Window Finisher Top Frame Seal Rear Left N/S is a precisely fitted body component responsible for the sealing and aesthetic finish of the upper window edge. The original BMW design ensures proper window guidance, reduces cabin noise, and provides protection against water and debris. As a result, this item from the Protective and decorative strips group supports driving comfort and maintains the factory look of the vehicle's side body.

Specifications and technical data

• SKU: 7177953-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7177953
• Substitutable numbers: 7177953, 51357177953
• Location on the vehicle: Rear, Left
• Category: Body Mouldings & Trims

Purpose and fitment

The presented upper window frame seal has been designed specifically for the BMW 7 Series F01 LCI facelift body version, intended for the rear left door. This means its geometry, profile, and mounting points are consistent with the manufacturer's factory specifications, which facilitates installation and allows for maintaining the original fitment of body components.

Its placement on the vehicle in the rear section on the driver's side makes this component important both for the sealing of the passenger cabin and for the visual continuity of the car's side line. Using an original window frame seal helps avoid issues with window closure, unwanted wind noise, or moisture ingress.

Function and benefits of use

The upper window frame seal performs several important technical functions that affect the daily use of the vehicle:

• stabilizes the window in the guide during opening and closing,
• limits the penetration of water, dust, and dirt into the door interior and cabin,
• reduces wind noise at higher speeds,
• provides an aesthetic finish where the window meets the bodywork.

By maintaining the factory seal profile, the window line remains consistent with other body elements, which is particularly important in premium BMW models. Replacing a worn or damaged seal with an original component from the same group allows for the restoration of proper sealing and acoustic comfort without the need to interfere with the door structure.

Characteristics of the used component

The offered window frame seal is a used component, sourced from dismantling. This type of part is a cost-effective solution for users who want to maintain the original vehicle specification while optimizing repair costs. The preserved factory shape and fitment translate into easier installation compared to aftermarket replacements with uncertain geometry.

Choosing an original, used seal is particularly important for body components responsible for sealing and fitment – even small dimensional deviations can cause leaks or improper window operation. Using a component sourced from BMW allows for maintaining the technical consistency of the entire door system.

Application in service and body restoration

The upper window frame seal in the rear left door is often replaced during body and paint work, after side collisions, or during long-term operation when leaks and noise appear. Replacing this component is recommended when:

• cracks or permanent deformations are visible on the seal surface,
• the window does not close evenly in the upper part,
• water is getting inside or there is a noticeable increase in cabin noise.

Professional body service, using an original seal, can restore factory sealing parameters and acoustic comfort, which is important for both daily operation and the vehicle's residual value.

Modernization expansion – related items

If you are planning a comprehensive repair or modernization of the side body area in your BMW and need other components from the same group, such as covers, trims, or additional strips, check the available parts in the BMW protective and decorative strips category.

While working on the body, it is also worth taking care of the efficiency of systems affecting durability and operational safety. In the context of high temperatures and long routes, our guide on the cooling system may be helpful – more information can be found in the article Summer heat vs. cooling system: used radiators and fans as a guarantee of savings.

Summary

BMW F01 LCI Door Window Finisher Top Frame Seal Rear Left N/S is an original component from the Protective and decorative strips group, designed to restore proper sealing, acoustic comfort, and the aesthetics of the side body. Using a component sourced from BMW facilitates installation, ensures proper window guidance, and allows for maintaining a consistent, factory look of the vehicle, which is particularly important in premium class cars.