Ford Focus Mk3 Door Lock Mechanism Rear Left N/S BM5A-A26413-BD

Ford Focus Mk3 Door Lock Mechanism Rear Left N/S is an original component from the Locks and latches group, designed for the rear left door panel. The mechanism ensures proper integration with the factory locking system, guaranteeing stable latching and predictable operation of the handle and linkages.

Specifications and technical data

• SKU: BM5A-A26413-BD
• Mark: Ford
• Condition: Used
• OEM Part Number: BM5A-A26413-BD
• Substitutable numbers: BM5A-A26413-BD, BM5AA26413BD, 2099463, BM5A-A26413-BG, 921767-104
• Location on the vehicle: Rear, Left
• Part type: Door Lock
• Category: Exterior Locks & Lock Hardware

Purpose and function of the lock mechanism

The presented mechanism is dedicated for installation in the rear left part of the vehicle body, in the passenger or driver's door depending on the body version. It is responsible for mechanical locking and unlocking of the door, integration with the lock cylinder, internal and external handles, and the vehicle's factory central locking system.

The precise construction of the gears and internal levers translates into a repeatable stroke of the linkages, which reduces the risk of door jamming, closing issues, or incomplete latching. This is particularly important in daily operation, where the rear doors are regularly used by passengers.

Construction and fitment for Ford Focus Mk3

The lock mechanism has been designed specifically for the door geometry of the Ford Focus Mk3, ensuring that the mounting points and linkage routing are consistent with the factory mounting holes. This facilitates the mechanic's work and shortens replacement time, as there is no need to modify the door panel or use additional adapters.

The internal lever system is optimized for compatibility with standard handles and the central locking installation, which allows for maintaining the original feel of the handle operation and the force required to open the door. Using an original Ford solution also helps maintain the seal and proper fit of the door to the body after closing.

Benefits of using the original rear left lock

Choosing a dedicated lock mechanism for the Ford Focus Mk3 offers a number of practical advantages:

• Factory fitment – compatibility with the door structure and locking system provided by the manufacturer.
• Stable central locking operation – correct transmission of movement from the actuator to the door latch.
• Reduction of play and rattling in the closing zone – proper guidance of the lock tongue and striker.
• Easier diagnostics – the mechanism corresponds to solutions known from Ford service documentation.

Thanks to this, the mechanism will prove effective both for typical replacement of a worn-out lock and for post-accident repairs, where restoring the correct geometry and function of the door is crucial.

Operational characteristics and installation

The element from the Locks and latches group intended for the rear left side of the vehicle allows for maintaining the consistency of the entire locking system. Installation takes place in the location of the factory lock, using original mounting points and the existing wiring harness and linkages, which helps maintain the clarity of the installation inside the door.

During replacement, it is recommended to check the condition of window guides, seals, and adjust the door position relative to the body to fully utilize the capabilities of the newly installed mechanism. A correctly adjusted lock minimizes the load on the hinges and improves acoustic comfort inside the vehicle.

Expanding the locking system in your Ford

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 latches, cylinders, or additional door mechanisms, check the available parts in the Ford Locks and latches category.

For users who are simultaneously servicing the braking system and considering the purchase of used components, a guide describing the safe selection of elements such as discs, calipers, or ABS modules may be helpful – you can find it in the article Second-hand braking system: how to safely select discs, calipers, and ABS?.