Lock Cylinder Mercedes W639 Front Left Right N/O/S Cylinder Key Set A6398901667

Lock Cylinder Mercedes W639 Front Left Right N/O/S Cylinder Key Set is a practical solution for users looking to restore efficient mechanical door locking in their vehicle. This component belongs to the Door handles group and is designed for installation in the front left or right part of the body, ensuring convenient cabin access and proper operation with the factory lock mechanism.

Specifications and technical data

• SKU: A6398901667-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6398901667
• Substitutable numbers: A6398901667, A 639 890 16 67
• Location on the vehicle: Front, Left, Right
• Category: Door Handles

Purpose and function in the vehicle

The presented lock cylinder set has been designed for Mercedes W639 series models, where it is responsible for the mechanical securing and unlocking of the front doors. Installation in the front zone, on the left or right side, allows for maintaining consistent operation with the central locking system and the vehicle key, which is particularly important in the daily operation of a van or passenger car.

This solution is suitable both for replacing a damaged cylinder and for the need to unify lock operation after a collision, break-in, or mechanical wear. Thanks to the original design, the cylinder works with the factory rods and mechanisms inside the door.

Set construction and benefits of use

The set includes a door lock cylinder with a key, which allows for immediate full use of the locking function without the need to match additional components. The design intended for installation in the door handle area ensures stable seating in the panel and correct transmission of the key movement to the lock mechanism.

The main advantages of using this solution include:

• maintaining the original operating geometry of the front door lock,
• possibility of installation on the driver's or passenger's side at the front,
• consistent operation with the existing vehicle locking system,
• minimizing the need for modifications within the door handle area.

Component condition and installation aspects

The lock cylinder with key comes from dismantling and is offered as a used part, which is a cost-effective solution while maintaining the manufacturer's original specifications. This type of component is often chosen by professional workshops and conscious users who prefer original parts over replacements with uncertain parameters.

Installation within the front door requires standard service procedures: removing the upholstery, disconnecting the rods, and removing the old cylinder. Thanks to the factory shape and mountings, the new element can be seated in place of the previous one without the need to interfere with the door structure.

Application in Mercedes vehicles and part selection

As a Mercedes brand product, the lock cylinder set is matched to the specifics of the W639 body, which translates into proper fitment with the handle and correct cooperation with the locking mechanism. When selecting parts, it is worth paying attention to the placement in the vehicle (front, left/right side) to ensure full compatibility with the specific door configuration.

If you are planning a comprehensive repair or upgrade of the access zone in your Mercedes and need other elements from the same group, such as cylinders, mechanisms, or complete handles, check the available parts in the Mercedes door handles category.

For users interested in a broader approach to economical vehicle operation, including the use of original parts from dismantling, you will find useful information in the article Used parts for Mercedes – original parts from dismantling, which discusses the practical aspects of selecting and using such components.