Ford Focus Mk2 C-Max Front Door Lock Latch Mechanism Left N/S 7M5A-R21813-CA

Ford Focus Mk2 C-Max Front Door Lock Latch Mechanism Left N/S is an original locking mechanism designed for installation on the driver's side. This component belongs to the Locks and Latches category and ensures proper, secure closing and unlocking of the front left door, which directly impacts the comfort of daily vehicle operation.

Specifications and technical data

• SKU: RHD-7M5A-R21813-CA
• Mark: Ford
• Condition: Used
• OEM Part Number: 7M5A-R21813-CA
• Substitutable numbers: 7M5A-R21813-CA, 7M5AR21813CA, 5041649, 7M5A-R21813-CB
• Location on the vehicle: Front, Left
• Part type: Door Lock
• Category: Exterior Locks & Lock Hardware

Purpose and function in the vehicle

The presented lock mechanism is designed to operate in the front left door area, where it is responsible for mechanical locking and interaction with the handle and linkage system. Its placement on the vehicle at the front on the driver's side allows for precise alignment with the door and pillar structure, which reduces the risk of play, leaks, and closing issues.

Thanks to its factory design, the lock works with the original opening and closing system, ensuring stable latch guidance, repeatable mechanism operation, and adequate resistance to operational loads typical for a driver's door.

Mechanism construction and technical advantages

The lock mechanism utilizes a set of precisely selected moving parts, springs, and levers that transfer movement from the handle and cylinder to the locking bolt. This design allows for:

• consistent operation with the factory door opening system,
• stable locking during repeated opening and closing cycles,
• maintenance of proper operating geometry within the front left door.

Its original Ford origin promotes compatibility with factory mounts and guides, which facilitates installation and limits the need for additional modifications. For the user, this means reliable fitment to the door structure and predictable mechanism behavior in daily use.

Condition, fitment, and service application

The item is offered as a used part, which allows for an economical replacement of a damaged or worn lock while maintaining the manufacturer's original specifications. In practice, this is a beneficial service solution in situations where there are problems with closing, locking, or unlocking the front left door, and repairing the existing mechanism is not cost-effective.

Thanks to the preservation of the factory mounting format and geometry, the lock can be used as a direct replacement in the front left door without the need for interference with the door skin or pillar structure. This translates into efficient installation and reduced vehicle downtime in the workshop.

Support with selection and expanding the scope of repair

When replacing the door lock, it is worth paying attention to the general condition of the opening system – handles, linkages, and other locking mechanisms in the vehicle. A consistent service approach helps reduce the risk of further faults within the door area and improves the comfort of using the car.

If you are planning a comprehensive repair or upgrade of the access area in your Ford and need other components from the same group, such as locking mechanisms, cylinders, or additional locking elements, check the available parts in the Ford Locks and Latches category.

Practical information for users and workshops

Before installation, it is recommended to verify the compatibility of the part with the specific body version and compare the mechanism's construction with the lock currently installed in the door. This helps avoid installation errors and ensures proper cooperation with the existing handle system and door wiring.

For users interested in a broader perspective on selecting drivetrain components and related sub-assemblies, practical tips on assessing the condition of used components can be found in our guide: Second-hand differential – what you need to know about used differentials, sensors, and drivetrain systems.