Ford Focus St-2 Mk3 Window Regulator Lifter Front Right O/S BM51-A23200-BF

Ford Focus St-2 Mk3 Window Regulator Lifter Front Right O/S is an original component from the Window Regulators and Motors group, designed for precise operation of the passenger-side window. This solution ensures stable performance of the window lifting and lowering mechanism, maintaining factory parameters and the comfort of use characteristic of Ford models.

Specifications and technical data

• SKU: BM51-A23200-BF
• Mark: Ford
• Condition: Used
• OEM Part Number: BM51-A23200-BF
• Substitutable numbers: BM51-A23200-BF, BM51A23200BF, 1870697
• Location on the vehicle: Front, Right
• Part type: Regulator & Motor Assembly
• Category: Window Motors & Regulators

Purpose and vehicle placement

The presented window regulator is designed for installation in the front right door, i.e., on the passenger side. Its placement in the front door zone means the component is responsible for the smooth operation of the window in one of the most frequently used points of the body, which is important for both driving comfort and the daily functionality of the vehicle.

Thanks to its dedicated fit for the Ford Focus St-2 Mk3 door structure, the mechanism works with factory guides and electrical installation, which facilitates installation and reduces the risk of problems with window geometry or closing.

Technical and functional characteristics

The regulator belongs to the Window Regulators and Motors category, meaning it is a component responsible for controlling window movement based on signals from control buttons in the cabin. The construction is prepared for operation in demanding conditions typical for doors – exposed to moisture, temperature changes, and vibrations.

The properly selected gear ratio of the mechanism and cooperation with the electric motor ensure predictable window movement speed, reducing overload and noise. As a result, the driver and passenger receive stable system operation without jerking or jamming, which is important for both comfort and the durability of the entire set.

Benefits of using an original Ford component

Choosing an original Ford window regulator primarily ensures a perfect fit for the specific model and the preservation of factory operating parameters. The OEM component is designed taking into account door geometry, window weight, and electrical system characteristics, which translates into:

• correct window guidance in the tracks,
• consistent cooperation with factory switches and controllers,
• reduced risk of electrical system overload,
• maintaining proper window pressure against the seals.

For the user, this means stable mechanism operation and a reduction in the need for additional adjustments after installation.

Condition, verification, and selection by numbers

The window regulator is offered as a used part, which allows for lower repair costs while maintaining the manufacturer's original specifications. Before installation in the vehicle, it is recommended to verify compatibility with your Ford Focus St-2 Mk3 based on the OEM part number and available interchangeable numbers, as well as to compare the placement on the vehicle with factory service documentation.

To better understand how to properly select consumables and sub-assemblies based on manufacturer markings, it is worth reading an expert guide describing selection procedures by VIN and OEM – you will find it in the article Why it is worth buying used gearboxes and engines – facts instead of myths, which also discusses practical aspects of purchasing used components.

Practical installation tips and additional information

When replacing the window regulator in the front right door, it is worth paying attention to the condition of the guides, seals, and window mounts. Proper tightening of elements and following the door upholstery disassembly sequence reduces the risk of later rattles or looseness. It is also recommended to check the correct operation of the window in the full range of motion after installation is complete, before the vehicle is put back into service.

If you are considering choosing between a used original part and a replacement, a guide explaining the differences in quality and fit may be helpful – you can find more on this topic in the material 5 reasons why a used OEM part is a better choice than a replacement, which presents practical selection criteria using popular models as examples.

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 lifting mechanisms, control motors, or window guides, check out the available parts in the Ford Window Regulators and Motors category.