Mercedes W176 W246 Front Left Door Lock Mechanism Actuator A1667200735

Left Front Door Lock for Mercedes W176/W246 is an original locking mechanism designed for installation in the left front door of vehicles in this series. The component belongs to the locks and latches category, ensuring proper operation of the central locking system, secure door closure, and stable interaction with the factory electrical system.

Specifications and technical data

• SKU: RHD-A1667200735
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1667200735
• Substitutable numbers: A1667200735, A 166 720 07 35, A2040085899, A 204 008 58 99, KZ
• Location on the vehicle: Front, Left
• Category: Exterior Locks & Lock Hardware

Purpose and Vehicle Placement

The presented lock mechanism is dedicated for installation in the front left door of Mercedes W176 and W246 class cars. The construction is designed for a specific body type and vehicle side, which translates to:

• correct fit with the door sheet metal and window regulator,
• proper positioning of the rods and cables for the interior and exterior handles,
• correct cooperation with the factory actuator and electrical system,
• maintenance of the original door closing and opening geometry.

Construction and Function of the Lock Mechanism

The left front door lock mechanism in the Mercedes W176/W246 combines a mechanical part with a set of components responsible for interaction with the central locking system. The applied design allows for:

• precise door locking using a remote control or key,
• stable holding of the door in the closed position while driving,
• proper operation of the interior and exterior opening functions,
• integration with the vehicle's safety systems.

Thanks to its factory design, the lock cooperates with original guides, handles, and wiring harnesses, which reduces the risk of fitting problems and eliminates the need for modifications.

Benefits of Using an Original Door Lock

Choosing an original left front door lock for Mercedes W176/W246 allows you to maintain the factory operating parameters of the locking system. The most important advantages include:

• Body Compatibility – the lock is designed for a specific side and position in the vehicle, which facilitates installation and ensures correct operation.
• Electronic Consistency – the mechanism cooperates with the central locking system and remote control according to the manufacturer's specifications.
• Stable Locking System Operation – proper door closure reduces noise, improves driving comfort, and contributes to passenger safety.
• Time Savings During Installation – no need for fitting or modifying mounting elements.

Item Condition and Service Application

The offered lock belongs to the group of used Mercedes locks and latches, making it an attractive service solution for operational repairs. It is particularly useful in situations where:

• the original lock has stopped responding to central locking signals,
• the door does not close properly or opens by itself,
• problems have arisen with opening the door from the inside or outside,
• replacement is necessary after mechanical damage to the door.

Using parts from the same model family allows for restoring the correct operation of the locking system without interfering with the door's structure.

Lock Selection and Additional Information

Before purchasing, it is advisable to compare the door configuration and vehicle equipment to ensure that the mechanism matches the body version and mounting side. If in doubt, it is helpful to verify the markings in the product's technical specifications, which include identification data, reference numbers, and information about its placement on the vehicle.

If you are looking for other Mercedes locks and latches for your car, check out the Mercedes locks and latches available in our store to select elements tailored to your specific model and body version.

For drivers interested in a broader approach to vehicle operation and repair, we also recommend the guide article on the engine cooling system, overheating, and selecting used radiators, which helps to better plan service work and ensure the durability of the powertrain.