Ford Focus Mk3 Exterior Door Window Seal Molding Rear Left N/S BM51-A254A43-AF

Ford Focus Mk3 Exterior Door Window Seal Left Rear is a precisely fitted body element responsible for the sealing and stable guidance of the rear window on the driver's side. The original design from the Window Seals and Trim group ensures proper adhesion to the window and door, reducing noise, vibrations, and moisture ingress into the interior. This is a practical solution for users who want to restore the factory operating parameters of the window mechanism in their Ford.

Specifications and technical data

• SKU: BM51-A254A43-AA
• Mark: Ford
• Condition: Used
• OEM Part Number: BM51-A254A43-AA
• Substitutable numbers: BM51-A254A43-AA, BM51A254A43AA
• Location on the vehicle: Rear, Left
• Part type: Window Trim
• Category: Window Seals, Gaskets & Trims

Purpose and Vehicle Placement

The presented seal is intended for installation in the rear, left side of the body, in the area of the rear passenger door. The vehicle placement designated as Rear – Left Side means that the element works with the side window in this part of the body, stabilizing its position in the guides and sealing the contact between the window and the door frame.

Such a fit is particularly important for vehicles used daily, where frequent opening and closing of windows can lead to wear of the factory seals. Replacing with an original element from the same construction group allows for maintaining the correct geometry of window operation and reducing the risk of scratches on its edges.

Technical and Functional Characteristics

The exterior seal for the rear left door window in the Ford Focus Mk3 is designed as an element that works with the factory window lifting mechanism and door construction. Its profile is adapted to the shape of the frame, enabling:

• maintaining stable window guidance during raising and lowering,
• reducing air drafts at higher speeds,
• minimizing water and dirt ingress into the door interior,
• reducing noise generated by airflow around the window.

Thanks to the use of original mounting geometry, the seal works with the factory mounting points in the door, which facilitates installation and maintains consistency with other body elements. This is particularly important for vehicles where maintaining the original structural rigidity and sealing is crucial.

Condition of the Part and Benefits of Choosing a Used Part

The offered seal is a used part, sourced from dismantling. This type of solution is often chosen by users who want to combine reasonable repair costs with maintaining the original manufacturer's specifications. For window seals and trim, this is important because these elements are designed for a specific body model and its assembly tolerances.

Choosing an original, used seal allows for:

• maintaining the factory fit to the shape of the door and window,
• avoiding installation problems typical of aftermarket parts with universal profiles,
• maintaining a consistent appearance with other body trim elements.

If you are considering whether a used or refurbished part would be a better solution, the article describing the differences between these approaches may be helpful – you can find more information in the material Refurbished or Used Original – Which Part to Choose for Repair?.

Application in Service Practice

The Ford Focus Mk3 Exterior Door Window Seal Left Rear is suitable for both typical repairs due to wear and tear, as well as for bodywork and painting after a collision, when it is necessary to replace door elements along with accessories. A correctly selected seal reduces the risk of window fogging from the inside and the occurrence of unwanted noises during driving, which directly affects driving comfort.

This element is particularly useful in situations where:

• there are signs of abrasion on the window edge from a worn seal,
• distinct wind noise is audible around the rear left window while driving,
• excessive moisture accumulates in the lower part of the door after rain.

Complementary Ford Window Seals and Trim

If you are planning a comprehensive repair or upgrade of the side glazing area in your Ford and need other elements from the same group, such as guide seals, trim strips, or exterior window trim, check the available parts in the Ford Window Seals and Trim category.