Ford Focus Mk3 Window Regulator Motor Rear Left N/S BM51-A27001-BD

Ford Focus Mk3 Rear Left Door Window Regulator is an original part from the Window Regulators and Motors group, designed for the rear left window in Ford vehicles. It ensures stable window operation and proper cooperation with the factory control mechanism, leading to seamless window operation and comfort in daily use. This solution is dedicated to users who expect a proven design and correct fit for the factory door system.

Specifications and technical data

• SKU: BM51-A27001-BD
• Mark: Ford
• Condition: Used
• OEM Part Number: BM51-A27001-BD
• Substitutable numbers: BM51-A27001-BD, BM51A27001BD, 1870372, BM51-A27001-BE, BM51A27001BE
• Location on the vehicle: Rear, Left
• Part type: Window Regulator
• Category: Window Motors & Regulators

Purpose and Fit for Ford Focus Mk3

The regulator is specifically designed for the rear left window of the Ford Focus Mk3 model, ensuring compatibility with the factory door geometry and original mounting points. Its placement on the rear axle on the driver's side allows for precise window guidance in the channels and proper cooperation with the seals and door upholstery.

Proper fit to the body structure minimizes the risk of stress, jamming, or misalignment of the window, which is particularly important when frequently opening and closing windows. The mechanism works with the factory window control system, facilitating installation and subsequent operation without the need for system modifications.

Technical and Functional Characteristics

As a component from the Window Regulators and Motors category, the regulator is responsible for transferring power from the control system to the window and maintaining its stable position throughout its operating range. The design intended for the rear left door ensures the correct direction of movement and proper guidance of the cable or mechanism arms (depending on the specific variant used in a given unit).

The regulator works with factory door hardware, such as window mounts, seals, and upholstery elements, preserving the original functionality and interior aesthetics. Using an original solution minimizes the risk of noises, play, or uneven window operation, which often occur with imprecisely fitted aftermarket parts.

Condition, Origin, and Benefits of Choosing a Used Part

The offered regulator is a used part, sourced from dismantling, which allows for a reasonable cost while maintaining the original manufacturer's specifications. Choosing such a solution is particularly beneficial for operational repairs where correct operation, body fit, and compatibility with the factory window control system are crucial.

A used part from dismantling is also a way to reduce service costs while preserving the original Ford construction. In practice, this means the possibility of restoring full functionality to the rear left window without investing in more expensive new components, while maintaining the proper operating standard of the mechanism.

Professional Selection by Part Numbers and Integration with Other Components

The regulator has an assigned OEM part number and interchangeable numbers, which facilitates precise identification and selection of the correct variant for a specific Ford Focus Mk3 version. This allows you to verify the part's compatibility with your vehicle, minimizing the risk of purchasing a mismatched mechanism. If necessary, use these designations when consulting with a mechanic or technical advisor.

For users interested in a broader perspective on selecting used components by OEM numbers and verification procedures, an expert guide will be helpful: Why Buy Used Gearboxes and Engines – Facts Instead of Myths. The identification and comparison principles contained therein can also be successfully applied to selecting door equipment and window control system components.

Repair Extension – Ford Window Regulators and Motors

If you are planning a comprehensive repair or upgrade of the door and window area in your Ford and need other parts from the same group, such as window lift mechanisms for other doors, control drives, or additional regulators, check the available parts in the Ford Window Regulators and Motors category.