BMW F20 Rear Left Door N/S Outside Channel Sealing Seal Trim Black 7240845

BMW F20 Rear Left Door N/S Outside Channel Sealing Seal Trim is a precision-fitted body component designed for the rear left door window of BMW F20 series models. It is responsible for the tight guidance of the window, reducing wind noise, and protecting the interior from water and debris, while providing an aesthetic finish to the door edge. Thanks to its factory geometry and appropriate profile, it serves as a functional solution for door and side window repairs.

Specifications and technical data

• SKU: 7240845
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7240845
• Substitutable numbers: 51347240845, 7240845
• Location on the vehicle: Rear, Left
• Color: Black
• Category: Door Seals

Purpose and function of the sealing trim

The presented sealing trim is a component in the Door seals category, mounted in the rear left area of the BMW F20 body. Its task is to provide stable window guidance in the channel and seal the window-to-door contact point, which limits the ingress of water, dust, and air noise into the cabin. A properly selected seal helps maintain acoustic comfort and reduces the risk of window fogging and unwanted vibrations while driving.

Construction, color, and fitment

The trim has been designed specifically for installation in the rear left part of the body, taking into account the characteristic geometry of the BMW F20 door. The black color harmoniously integrates with the factory window frame finish and other sealing elements, ensuring a consistent look of the vehicle's side profile after installation. The design, intended for a specific location on the vehicle, facilitates installation and allows for proper adhesion to the window and door edge.

Benefits of using the original sealing trim

Using a dedicated BMW F20 series door window sealing trim allows for the restoration of the proper operation of the window lifting mechanism and the seal integrity in the rear left part of the body. The properly selected seal profile limits rattling and squeaking while driving and helps maintain a stable position of the window in the channel. This solution is particularly recommended when replacing damaged, perished, or leaking elements, where maintaining factory performance and aesthetic parameters is a priority.

Condition of the item and service application

The BMW F20 rear left door window sealing trim is a used part, making it an attractive option for economical repair of the door and side window area. It works well both for local post-collision repairs and for gradual body restoration when it is necessary to replace individual sealing elements. Thanks to the preservation of the original geometry, it can be used as a replacement for a worn-out trim without the need for structural door modifications.

If you are planning a comprehensive repair or upgrade of the door area in your BMW and need other components from the same group, such as perimeter seals, guide rails, or additional sealing profiles, check out the available parts in the BMW door seals category.

Additional technical support

For larger service projects, including those involving the drivetrain or vehicle modernization, guide materials regarding the selection and operation of components may be helpful. In the context of planning repairs related to the drivetrain, it is worth reading an article discussing the differences between manual, automatic, and DSG transmissions, typical faults, and the principles of purchasing used components – you can find it here: guide to purchasing and operating manual, automatic, and DSG transmissions.