Ford Focus MK2 ST Front Door Lock Cable Linkage Left N/S 4M51-B218A01-AA

Ford Focus MK2 ST Front Door Lock Cable Linkage Left N/S is a precision component of the door opening mechanism, designed for installation on the driver's side in the front body section. As a part from the Internal locks and latches group, it ensures proper transmission of movement from the handle to the lock, which translates into reliable and consistent door operation. Using this original Ford component is a sensible choice for professional repair of the lock mechanism in the Focus MK2 ST model.

Specifications and technical data

• SKU: 4M51B218A01AA
• Mark: Ford
• Condition: Used
• OEM Part Number: 4M51B218A01AA
• Substitutable numbers: 1329768, 4M51B218A01AA, 4M51-B218A01-AA
• Location on the vehicle: Front, Left
• Part type: Door Lock Knob
• Category: Interior Locks & Lock Hardware

Purpose and function of the door lock cable

The presented cable operates in the front left door of the vehicle, responsible for the mechanical connection between the handle and the lock. A correctly selected component guarantees:

• smooth door opening from the inside and/or outside (depending on vehicle configuration),
• proper force transmission without delays or jamming,
• stable cooperation with the factory lock and door handle. Thanks to being matched to the specific Ford model, the cable maintains the appropriate length, routing geometry, and mounting ends, which is crucial for the reliable operation of the entire system.

Original origin and fitment for Ford Focus MK2 ST

The lock cable was designed by the vehicle manufacturer Ford, which means full compatibility with the factory door mechanism in the Focus MK2 ST version. The original design ensures:

• compatibility with the factory lock and handles in the front left door,
• appropriate mounting points in the door panel,
• preservation of the mechanism's operating characteristics as intended by the manufacturer. Using an original cable instead of a replacement reduces the risk of issues with length, tension, or incorrect positioning in the door, which is important for both user comfort and the durability of the entire system.

Characteristics of the used component

The offered cable comes from dismantling and has the status of a used part. Such components are frequently chosen for door mechanism servicing because they:

• retain the manufacturer's original specifications,
• allow for economical repair while maintaining proper functionality,
• are a proven solution for well-used models such as the Focus MK2 ST. Before installation, a standard visual inspection and proper routing of the cable in the guides are recommended to ensure even operation of the lock and avoid excessive stress.

Benefits of using a dedicated lock cable

Using the correct lock cable in the front left door translates into a number of practical benefits:

• Restoration of full door functionality – elimination of problems with opening, the need to use excessive force, or occasional jamming.
• Reduction of wear on other mechanism components – a properly working cable reduces the load on the lock and handles.
• Hassle-free installation – matching the specific Ford Focus MK2 ST model shortens service time and facilitates the mechanic's work. This solution is particularly recommended for repairs following mechanical damage, corrosion of guides, or operational wear of the factory cable.

Related items from the Ford locks and latches group

If you are planning a comprehensive repair or upgrade of the door area in your Ford and need other items from the same group, such as lock cylinders, latches, or internal mechanisms, check out the available parts in the Ford internal locks and latches category.

Additional information on selecting used parts

When choosing components from the secondary market, it is worth paying attention to the origin and compatibility with the specific vehicle equipment version. In the case of other makes and models where you are also considering using original parts from dismantling, an article describing the advantages of such solutions may be helpful – you can find more on this topic in the material Mercedes – comfort, prestige, and durability. Why is it worth choosing original used parts?.