Door Lock Mercedes C117 W176 W246 Front Left N/S Mechanism Actuator A1667200735

Door Lock Mercedes C117 W176 W246 Front Left N/S Mechanism Actuator is a precision mechanism from the Locks and Latches category, designed for reliable operation with the vehicle's factory locking system. This complete mechanism with an actuator is intended for installation on the driver's side, ensuring secure locking and unlocking of the door and proper integration with the central locking system.

Specifications and technical data

• SKU: rhd-A1667200735-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1667200735
• Substitutable numbers: A1667200735, A 166 720 07 35
• Location on the vehicle: Front, Left
• Category: Exterior Locks & Lock Hardware

Purpose and function in the vehicle

The presented lock mechanism is dedicated to the front left door in selected Mercedes models of the C117, W176, and W246 series. It is responsible for the mechanical locking of the door panel, interaction with the external and internal handles, and transmitting signals to the central locking system and body electronics. A properly functioning lock in this area is crucial for safety, user comfort, and body sealing.

The location in the front left zone means that the component is subject to intensive use during daily vehicle operation, which is why its efficiency is particularly important in the context of city driving and long-distance travel.

Mechanism construction and integration with the central locking system

The mechanism combines a mechanical part responsible for locking with an integrated electric actuator that works with the central locking system and remote control. This enables:

• automatic locking and unlocking of the door via the remote control or cabin button,
• stable maintenance of the closed position while driving,
• correct transmission of movement from handles and linkages to the lock latch,
• consistent operation with factory comfort and security systems.

The original design intended for Mercedes allows for maintaining factory fitment and mounting geometry, which facilitates installation and minimizes the risk of improper door operation after replacement.

Benefits of using an original door lock

Using a dedicated front left door lock in a Mercedes C117, W176, or W246 series allows for restoring the correct operation of the locking system without the need for installation modifications. The most important advantages include:

• Compatibility with the factory installation – appropriate connectors and mounting geometry matched to the driver's side door.
• Stable operation with the central locking system – proper response to signals from the remote control and comfort modules.
• Reduction of noise and play in the door area thanks to proper panel locking.
• Possibility of restoring full functionality after a failure without interfering with the body structure.

Choosing an original component from the Locks and Latches group is particularly important in premium class vehicles, where precision of operation, working culture, and maintaining the safety parameters designed by the manufacturer are essential.

Characteristics of the used component

The offered door lock is a used part, sourced from dismantling, which allows for combining reasonable repair costs with maintaining the original manufacturer's specifications. This type of solution is often chosen by users who want to maintain component consistency in the vehicle, avoiding random replacements with uncertain parameters.

Before installation, it is recommended to perform a standard verification of the door electrical installation and the correct adjustment of linkages and handles to fully utilize the efficiency of the locking mechanism and ensure smooth operation of the entire system.

Expansion of the locking system in a Mercedes

If you are planning a comprehensive repair or upgrade of the door zone in your Mercedes and need other elements from the same group, such as additional locking mechanisms, actuators, or components working with the central locking system, check the available parts in the Mercedes Locks and Latches category.

For drivers interested in optimizing service costs for premium cars while maintaining high-quality components, an article describing a practical approach to selecting parts from dismantling may be helpful – more information can be found in the material Luxury within reach – how to service a Porsche legend using proven used parts.