Ford Mondeo Mk4 Rear Door Window Seal Gasket Surround Left N/S BS71-N25825-AJ

Ford Mondeo Mk4 Rear Door Window Seal Gasket Surround Left N/S is an original component from the Window seals and trims group, designed for installation in the rear left door of the vehicle. The precisely fitted sealing profile helps maintain proper window tightness, reduce wind noise, and improve acoustic comfort inside your Ford.

Specifications and technical data

• SKU: 1777857
• Mark: Ford
• Condition: Used
• OEM Part Number: 1777857
• Substitutable numbers: 1777857, BS71-N25825-AJ, BS71N25825AJ
• Location on the vehicle: Rear, Left
• Part type: Window Seal
• Category: Window Seals, Gaskets & Trims

Purpose and function of the seal

The presented seal is dedicated to the rear left door window in the Ford Mondeo Mk4 model. Its task is to provide stable window guidance within the door frame and limit the penetration of water, dust, and air drafts into the cabin interior. Thanks to its properly shaped cross-section and fit to the door structure, this component supports the correct operation of the window lifting mechanism and reduces the risk of unwanted play.

Benefits of using an original Ford seal

Choosing an original window seal for the Ford Mondeo Mk4 translates into a number of practical advantages:

• maintaining the factory geometry of adhesion to the glass and door frame,
• better protection against leaks and air turbulence in the rear part of the body,
• reduction of rattles and squeaks resulting from door movement while driving,
• consistent visual appearance with other body sealing elements.

As a result, replacing a worn or damaged seal with an original component allows you to restore vehicle comfort and improve the subjective feeling of finish quality in the rear part of the cabin.

Installation characteristics

The seal is designed for installation in the rear zone, on the left side, which facilitates clear identification of the correct installation location. The design of the element is adapted to the factory mounting points in the Ford Mondeo Mk4 door, which promotes efficient installation without the need for modifications. When properly seated in the door frame, the seal works with the window throughout its full range of motion, ensuring even pressure along the entire length of the edge.

Condition and service application

The item comes from disassembly and is offered as a used part, which is a cost-effective service solution in situations where it is necessary to replace a single section of the rear door seal. This type of component will work well both for post-accident repairs and for the gradual restoration of the sealing system in older Ford Mondeo Mk4 units, where operation and weather conditions may have affected the original material properties.

Complementary Ford window seals and trims

If you are planning a comprehensive repair or upgrade of the door zone in your Ford and need other elements from the same group, such as additional guide seals, window trims, or finishing elements near the windows, check the available parts in the Ford window seals and trims category.

For drivers interested in a broader look at the development of construction and solutions used in premium class cars, an article describing changes in body structure, equipment, and service components in successive generations of luxury models may be helpful – you can find it here: Evolution of the Mercedes S-Class: from W140 to W222 – innovations, model differences, and Mercedes auto parts over the years.