Ford Focus St-3 Mk3 Window Regulator Lifter Motor Rear Right O/S BM51-A27000-BE

Ford Focus St-3 Mk3 Window Regulator Lifter Motor Rear Right O/S is a precision component from the Window regulators and motors group, designed for operating the rear right window in your Ford. The integrated mechanism with an electric drive ensures stable window operation, improving daily comfort and the functionality of the rear part of the vehicle body.

Specifications and technical data

• SKU: BM51A27000BE
• Mark: Ford
• Condition: Used
• OEM Part Number: BM51A27000BE
• Substitutable numbers: BM51A27000BE, 1870371, BM51-A27000-BE
• Location on the vehicle: Rear, Right
• Part type: Regulator & Motor Assembly
• Category: Window Motors & Regulators

Purpose and vehicle placement

The presented window regulator with motor is designed for installation in the rear right part of the body, in the passenger door zone. It is responsible for the smooth raising and lowering of the window, working in conjunction with the factory electric controls in the cabin. Such a dedicated placement reduces the risk of installation issues and facilitates servicing.

Construction and function of the window regulator assembly

The component combines the window guide mechanism and the electric drive in one housing, which allows for efficient torque transmission from the motor to the guides. As a result, the window moves evenly, without jerking or jamming, which is particularly important during frequent use of the rear passenger area. The regulator works with the factory Ford electrical installation, allowing control from the door panel and – depending on the car's configuration – from the driver's panel. Using a complete assembly with a drive reduces the need for additional adjustments and speeds up the replacement process.

Benefits of using an original Ford solution

The original solution from the Ford brand ensures proper fitment to the door structure, factory mounting points, and window guide geometry. This translates into:

• stable window operation throughout the full range of motion,
• proper window sealing against the weatherstrips,
• reduced risk of noise and vibrations while driving,
• easier installation in place of the factory component. By maintaining the original design concept, the regulator works in harmony with other door components, which is essential for the durability of the entire window lifting system.

Characteristics of the used component

The window regulator with motor is offered as a used part, which allows for lower repair costs while maintaining factory design specifications. For many users, this is a reasonable compromise between price and functionality, especially in the case of mechanical-electrical components that do not require individual programming. If you want to better understand how to safely select used drive and electrical components for your car, it is worth checking out the expert guide on our blog: Why it is worth buying used gearboxes and engines – facts instead of myths. You will find practical tips there that help you make informed purchasing decisions for other subassemblies as well.

Compatibility within the Ford window regulator group

The regulator belongs to the Window regulators and motors group, which means it works with the vehicle's window control system and is part of a larger system responsible for window operation comfort. If you are planning a comprehensive repair or upgrade of the door and window zone in your Ford and need other elements from the same group, such as guides, lifting mechanisms, or control motors, check the available parts in the Ford window regulators and motors category.

Summary

Ford Focus St-3 Mk3 Window Regulator Lifter Motor Rear Right O/S is a practical solution for users who want to restore full functionality to the rear right window while maintaining the factory installation standard. The integrated mechanism with an electric drive, matched to the Ford door structure, facilitates replacement and allows for quick elimination of window operation issues, improving the daily comfort of vehicle use.