Ford Mondeo Mk4 Front Window Lifter Regulator Motor Left N/S 6M21-14A389-B

Ford Mondeo Mk4 Front Window Lifter Regulator Motor Left N/S is a factory component from the Window regulators and motors group, designed for precise operation of the driver's side window. The integrated electric drive mechanism ensures stable window guidance and consistent performance in daily use, which translates into comfort and safety.

Specifications and technical data

• SKU: 6M21-14A389-B
• Mark: Ford
• Condition: Used
• OEM Part Number: 6M21-14A389-B
• Substitutable numbers: 6M21-14A389-B, 6M2114A389B, 1376856, 6M21-14A389-BA, 6M2114A389BA
• Location on the vehicle: Front, Left
• Category: Window Motors & Regulators

Purpose and fitment for Ford Mondeo Mk4

The presented window regulator is designed specifically for the front left door of the fourth-generation Ford Mondeo. The vehicle placement, defined as front – left side, allows for clear identification of the installation zone and reduces the risk of errors when selecting parts. Thanks to a design consistent with Ford's factory standards, the component works with the original rails, mounts, and the vehicle's electrical system.

Construction and function of the regulator and motor assembly

The window regulator integrated with the motor forms a complete assembly responsible for the smooth raising and lowering of the window in the driver's door. The mechanism combines:

• a mechanical part responsible for guiding and stabilizing the window in the rails,
• an electric drive providing the appropriate torque for operation under load,
• mounting points matched to the factory mounting holes in the door.

This configuration facilitates installation and reduces the time required for replacement, while ensuring consistency with the factory window control system.

Benefits of using an original Ford component

Choosing a window regulator from the Window regulators and motors group sourced from Ford means maintaining performance parameters similar to those installed at the factory. The appropriate arm geometry, correct gear ratio, and motor matching to the vehicle's electrical system contribute to:

• stable window movement without excessive play or vibrations,
• consistent window speed across the full range of motion,
• proper cooperation with factory control buttons and comfort modules.

As a result, ergonomics and predictable window behavior are maintained after replacement for daily use.

Characteristics of the used component

The offered window regulator is a used part, sourced from dismantling, which allows for combining a cost-effective purchase with the preservation of the manufacturer's original specifications. Such components are a popular choice for maintenance repairs when priority is given to compatibility with the factory door structure and proper fitment to the existing installation. A used window regulator is a sensible solution for mechanical damage, drive seizure, or window guidance issues.

Installation and maintenance tips

When replacing the window regulator in a Ford Mondeo Mk4, it is worth paying attention to the correct positioning of the window in the rails and proper tightening of the mounting points. It is recommended to:

• check the condition of seals and rails before installing the new assembly,
• test the window's operation across the full range after the first start-up,
• avoid operating the window when movement is obstructed to prevent overloading the motor.

A correctly installed regulator and motor assembly ensures comfortable operation of the driver's window and reduces the risk of future failures in this area.

If you are planning a comprehensive repair or upgrade of the door and window area in your Ford and need other elements from the same group, such as lifting mechanisms, electric drives, or rails, check the available parts in the Ford Window regulators and motors category.

To better plan your repair budget and make an informed approach to choosing parts sourced from dismantling, it is worth reading the guide Why it is worth buying used gearboxes and engines – facts instead of myths, which discusses the practical aspects of selecting parts by OEM numbers and the real benefits of using used components.