Mercedes W204 W212 Front Left N/S Door Lock Mechanism Actuator A0997200735

Mercedes W204 W212 Front Left N/S Door Lock Mechanism Actuator is a precision mechanism designed for installation in the front left door of the vehicle. This component from the Locks and latches group is responsible for secure locking and efficient unlocking of the door, ensuring convenient access to the cabin for the driver and passengers. A used, original lock mechanism is a sensible choice for those looking for a technically compatible solution without the need to invest in a new part.

Specifications and technical data

• SKU: rhd-A0997200735-5
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0997200735
• Substitutable numbers: A0997200735, A 099 720 07 35
• Location on the vehicle: Front, Left
• Category: Exterior Locks & Lock Hardware

Purpose and function of the door lock

The presented mechanism is dedicated to installation in the front left door of Mercedes executive cars, such as the W204 and W212. It is responsible for:

• mechanical locking of the door from the body side,
• correct transmission of the external and internal handle movement,
• cooperation with the central locking actuator,
• stable maintenance of the door in a closed position while driving.

Thanks to its factory design, the lock maintains the correct operating geometry, which translates into smooth opening and closing of the door without excessive play or jamming.

Construction and body fitment

The lock mechanism has been designed specifically for the architecture of the front left door in a Mercedes, taking into account the shape of the panel, cable routing, and internal mounts. This means:

• factory mounting points to the door structure,
• adaptation to standard handle cables and lock cylinder,
• compatibility with the factory central locking system.

Such fitment limits the need for modifications and allows for installation in place of the old lock while maintaining original functionality. Original origin from the Mercedes group also promotes proper alignment with other door components.

Benefits of using an original used lock

Choosing a used door lock for a Mercedes is a practical solution for drivers who want to restore full door functionality at controlled costs. The main advantages include:

• preservation of the factory design and operating characteristics of the mechanism,
• no problems with fitting to the installation and equipment in the door,
• possibility of quick replacement of a damaged lock without interfering with the bodywork.

A used component allows for restoring proper door locking and unlocking, which is important both for daily comfort and vehicle security. Locks and latches are crucial for the proper operation of the central locking system and protection of the car against unauthorized access.

Professional installation and operation

Due to the complex internal structure of the door and the need for correct adjustment of the cables, installation by a person with experience in servicing Mercedes bodywork is recommended. A properly installed lock:

• ensures uniform resistance when opening the handles,
• correctly cooperates with the central locking and vehicle electronics,
• minimizes the risk of re-damaging the mechanism.

Thanks to proper installation, stable door operation can be achieved, without rattles or accidental opening while driving, which translates into daily comfort of using the vehicle.

Repair expansion and additional information

If you are planning a comprehensive repair or upgrade of the cabin access zone in your Mercedes and need other elements from the same group, such as locking mechanisms, actuators, or lock cylinders, check the available parts in the Mercedes Locks and latches category.

If you want to learn more about the advantages of using original, used components in cars of this brand and find out how to reasonably reduce service costs without sacrificing quality, it is worth reading the article Used parts for Mercedes – original parts from dismantling, which discusses the practical aspects of selecting such components.