Mercedes Vito W639 Door Lock Latch Actuator Mechanism Front Left N/S A6397201435

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes Vito W639 Door Lock Latch Actuator Mechanism Front Left N/S is an original locking mechanism designed for installation on the passenger side in right-hand drive versions. This component from the Locks and latches group ensures the proper operation of the central locking system, stable door closing, and secure locking of the door panel while driving.

Specifications and technical data

• SKU: rhd-A6397201435
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6397201435
• Substitutable numbers: A6397201435, A 639 720 14 35, KD
• 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 of the Mercedes Vito W639 generation, in a configuration adapted for left-hand traffic. It is responsible for precise locking, cooperation with the internal and external handle rods, and the central locking system, which translates into comfort during the daily use of the commercial or passenger vehicle.

Thanks to the factory design of the lock, the correct geometry of the mechanism's operation is maintained, which reduces the risk of the door not closing properly, latch play, or problems with unlocking the door panel on the passenger side.

Mechanism construction and advantages of the original solution

The lock mechanism combines a locking part and an actuator responsible for cooperation with the vehicle's electrical system in one housing. The original design ensures:

• consistency with the factory central locking and alarm system,
• proper routing of rods and levers in the door,
• stable holding of the door panel in the closed position.

The original lock from this series is designed for the specific Vito W639 body, which means matched mounting points, the appropriate body shape, and compatibility with factory door wiring harnesses. As a result, installation is straightforward, without the need for bodywork or electrical modifications.

Benefits of using an original used lock

Choosing a used, factory-made Mercedes Vito W639 Door Lock Latch Actuator Mechanism Front Left N/S allows you to maintain consistency with the vehicle's original design while reducing repair costs. This solution is particularly beneficial when you want to:

• maintain the correct operation of the central locking system without experimenting with replacements,
• preserve the factory door fitment and correct body lines,
• reduce the time required for installation thanks to the plug-in fitment to the existing installation.

The used component from the Locks and latches group is a good choice in situations where the existing lock has suffered mechanical wear, damage during a collision, or has stopped working with the central locking actuator.

Professional installation and service application

The mechanism is intended for installation in the front left door, so it is particularly important to correctly align the lock relative to the pillar and hinges. In service applications, it will work well both for post-accident repairs and for typical operational wear in intensively used commercial vehicles.

Due to its factory origin, the lock works well with original handles, cylinders, and door electronics, which facilitates diagnostics and subsequent service in workshops specializing in the Mercedes brand.

Support with selection and additional information

If you are planning a comprehensive repair or upgrade of the door area 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.

To better plan your repair and make an informed decision about choosing an original used lock mechanism, it is worth learning about the impact of such parts on the vehicle's resale value – you can find more on this topic in the article Original used parts vs. resale price – how not to lose money?.