Mercedes-Benz A-Class W168 Rear Right O/S Door Lock Latch Mechanism Actuator

Mercedes-Benz A-Class W168 Rear Right O/S Door Lock Latch Mechanism Actuator is a precision locking mechanism designed for the rear right side of the vehicle body. This component is responsible for securely locking and unlocking the door, working in conjunction with the central locking system, and ensuring the door closes properly, which directly impacts the comfort and safety of the vehicle.

Specifications and technical data

• SKU: A1687301635
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1687301635
• Substitutable numbers: A1687301635, A 1687301635, A 168 730 16 35, ASZ
• Location on the vehicle: Rear, Right
• Category: Interior Locks & Lock Hardware

Purpose and function in the vehicle

The presented door lock is dedicated to the rear right side of the Mercedes-Benz A-Class W168 generation. As a component from the Interior locks and latches group, it is responsible for the mechanical locking of the door, interacting with the actuator, and correctly transferring movement from the handle and rods to the lock tongue.

A properly functioning mechanism:

• ensures the door remains securely closed while driving,
• enables smooth opening from both the inside and outside,
• works with the central locking system and anti-theft security features,
• reduces play and unwanted noises within the door area.

Construction and technical characteristics

The mechanism combines a locking part with actuators responsible for interacting with the vehicle's electrical system. The design of the lock is matched to the geometry of the rear right door, ensuring the correct position relative to the pillar and the striker in the bodywork.

Key features include:

• mountings designed for the specific body model,
• integrated system of levers and rods working with the handles,
• locking mechanism adapted for operation with the central locking system,
• compact housing for easy installation within the door cavity.

Condition of the component and benefits of use

The offered lock is a used, original Mercedes component, which means it retains factory geometry, proper fitment, and compatibility with the door structure of the A-Class W168. In practice, this translates to easier installation and predictable behavior of the mechanism after assembly.

Using an original door lock allows you to:

• restore proper closing and locking of the rear right door,
• reduce issues with doors not closing, bouncing back, or failing to respond to controls,
• maintain the integrity of the vehicle's security system,
• preserve compliance with factory design solutions.

Selection and installation of the door lock

Before installation, it is worth verifying the compatibility of the lock with your specific A-Class W168, especially regarding its placement on the vehicle (rear, right side) and the type of locking mechanism used. A correctly selected component facilitates installation and minimizes the need for additional modifications within the door.

During installation, it is recommended to:

• check the condition of the rods and handles that work with the lock,
• inspect the adjustment of the striker in the pillar,
• verify the operation of the central locking system after installation,
• test opening and closing the door multiple times under various conditions.

Expanding the locking system in Mercedes-Benz

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

Additional technical support

For larger service tasks, including those involving the powertrain, a guide on verifying used components may be helpful. In this regard, it is worth reading the article Buying a used engine: 5 things you must check before installation, which shows best practices for assessing the condition of parts before assembly and can also be an inspiration when selecting other components.