Mercedes W204 W212 Front Left Door Lock Mechanism Actuator A0997200735

Mercedes W204 W212 Front Left Door Lock Mechanism Actuator is an original locking mechanism designed for installation in the front left door of Mercedes C-Class and E-Class vehicles. This component from the Locks and latches group is responsible for precise locking, unlocking, and integration with the central locking system, ensuring driver convenience and the proper level of security. Thanks to its factory design, the mechanism is perfectly matched to the door geometry and the electrical installation of the specific side of the vehicle body.

Specifications and technical data

• SKU: rhd-A2047203735
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2047203735
• Substitutable numbers: A2047203735, A 204 720 37 35, A0997200735, A 099 720 07 35
• Location on the vehicle: Front, Left
• Category: Exterior Locks & Lock Hardware

Purpose and function in the vehicle

The front left door lock mechanism in the Mercedes W204 / W212 operates at a critical point of the body – the driver's entry zone. It is responsible for:

• mechanical locking and unlocking of the driver's side door,
• cooperation with the central locking system and remote control,
• proper closing of the door panel against the body,
• transferring movement from the external and internal door handles to the locking assembly.

Thanks to its dedicated placement on the front, left side of the vehicle, the lock maintains the correct geometry of the linkages and the pressure of the door against the seals, which reduces noise and improves driving comfort.

Construction and fitment for Mercedes W204 / W212

The offered door lock is a design developed specifically for the Mercedes C-Class (W204) and E-Class (W212) platforms. This means:

• compatibility with factory guides, linkages, and handles,
• mounting points designed for a specific side of the body,
• integration with the vehicle's electrical system and comfort modules,
• preservation of the original operating characteristics of the central locking system.

Such fitment facilitates installation and reduces the need for additional modifications, which is particularly important when servicing premium class vehicles such as Mercedes.

Condition, origin, and benefits of using a used part

The item comes from the segment of original used Mercedes components, which allows for maintaining factory build quality and compatibility with other door components. A used door lock is a sensible choice in situations where:

• the original mechanism has worn out or suffered mechanical damage,
• there are problems with locking, latching, or cooperation with the central locking system,
• you want to reduce repair costs while maintaining the original design.

Compared to low-budget replacements, the factory lock mechanism ensures stable operation, proper fit, and predictable behavior in daily use.

Why choose this lock mechanism

Using a dedicated front left door lock in the Mercedes W204 / W212 brings a number of practical benefits:

• Factory fitment – no installation problems, correct positioning relative to the pillar and handle.
• Consistency with the comfort system – correct cooperation with the central locking and vehicle electronics.
• Reduction of noise and vibration – proper door closing reduces wind noise and creaking.
• Economical repair – a used original allows for lowering service costs while maintaining the quality typical of the Mercedes brand.

Repair expansion and additional information

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

More practical information on how to consciously choose used original components for a Mercedes and how they allow for lowering service costs while maintaining a high standard can be found in the article: Used parts for Mercedes – original parts from dismantling.