Ford Fiesta Mk6 3Dr Door Window Regulator Front Left N/S 2S51-B23201-BN

Ford Fiesta Mk6 3Dr Door Window Regulator Front Left is a component from the Window regulators and motors group, designed for operating the window in the front left door of the three-door version. It is a practical solution for users who want to restore the efficient operation of the window lifting mechanism while maintaining a proper fit to the door structure.

Specifications and technical data

• SKU: 2S51-B23201-BN
• Mark: Ford
• Condition: Used
• OEM Part Number: 2S51-B23201-BN
• Substitutable numbers: 2S51-B23201-BN, 2S51B23201BN, 1498048, 2S51-B23201-BP, 2S51B23201BP
• Location on the vehicle: Front, Left
• Part type: Regulator & Motor Assembly
• Category: Window Motors & Regulators

Application and function in the vehicle

The window regulator in the front left door is responsible for smooth guidance and stable positioning of the window during opening and closing. In the 3-door Ford Fiesta Mk6, this is a particularly important component, as the doors are longer than in the five-door versions, and the loads acting on the mechanism are higher. Its placement in the front – left side of the body zone means that this component has a direct impact on driver comfort: proper operation of the mechanism facilitates daily car use, reduces wind noise at higher speeds, and helps maintain cabin tightness.

Compatibility and fitment

The presented regulator has been designed specifically for the door structure of the three-door Ford Fiesta Mk6, taking into account the geometry of the guides, mounting points, and compatibility with factory glazing. This makes it possible to maintain the correct window operation geometry without the need for bodywork modifications or mounting adaptations. The component belongs to the Window regulators and motors group, which means it is adapted to work with the factory window control system in the driver's door. Proper fitment to the body reduces the risk of jamming, uneven lifting, and excessive play on the guides.

Characteristics of the used component

The regulator comes from a used vehicle, which in practice means it is a part with verified performance in real operating conditions. For many users, this represents a reasonable compromise between repair costs and maintaining compliance with the factory door design. Choosing a used component from this group allows you to:

• maintain the original character of the window mechanism operation,
• reduce repair costs compared to new replacements,
• maintain compatibility with factory mounting hardware.

Benefits of installation in the Ford Fiesta Mk6 3Dr

Replacing a faulty regulator with a functional component from the same design group improves the daily functionality of the car. A properly working mechanism:

• ensures stable window guidance throughout the entire range of motion,
• reduces the risk of window damage due to misalignment,
• facilitates maintaining proper door sealing, which affects interior acoustics. For users who frequently use the electric driver's window control, a functional regulator translates into more predictable and repeatable operation of the entire system.

Ford window regulators and motors – expansion and door zone service

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

How to consciously choose used mechanical components

When selecting used mechanical components – such as window regulators, gears, or drives – it is worth being guided not only by price but also by compliance with manufacturer markings and the history of use in a given model. Procedures for selection by catalog numbers and comparing mounting designs are helpful. To better understand what the selection process for used components looks like and what the real cost differences are compared to new parts, it is worth referring to expert material: Why it is worth buying used gearboxes and engines – facts instead of myths. Although it mainly concerns powertrains, the principles of approaching used components described there also apply well to other groups of mechanical parts.