Mercedes W639 Sliding Door Lock Actuator Mechanism Rear Right A6397300735

Mercedes W639 Sliding Door Lock Actuator Mechanism Rear Right is a precision component from the Locks and latches group, designed for the rear right side of the vehicle body. It ensures secure locking of the sliding door, stable mechanism operation, and proper closing, which translates into comfort in the daily use of your Mercedes vehicle.

Specifications and technical data

• SKU: A6397300735
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6397300735
• Substitutable numbers: A6397300735, A 639 730 07 35
• Location on the vehicle: Rear, Right
• Category: Exterior Locks & Lock Hardware

Purpose and function of the sliding door lock

The presented mechanism is dedicated to the sliding door located at the rear right side of the vehicle. It is responsible for:

• stable locking of the door leaf in the closed position,
• cooperation with sliding door guides and handles,
• proper maintenance of the closing geometry in the rear part of the body.

Thanks to its precise fit to the Mercedes W639 design, the lock operates in a predictable and repeatable manner, which reduces the risk of play, improper closing, or unwanted opening while driving.

Construction and fitment for Mercedes W639

The lock mechanism has been designed for the specific construction of the sliding door in the W639 model, taking into account the rear right side of the vehicle. This means:

• compatibility with the factory mounting system in the bodywork,
• adaptation for use with original cables and handles,
• appropriate geometry of catches and latches for this specific mounting position.

Such a fit facilitates installation and allows for maintaining factory door performance parameters without the need for modifications or adaptations.

Characteristics of the used component

The offered lock belongs to the group of used parts, which in practice means that it comes from vehicle dismantling and has been verified for its suitability for further use. For many users, this is a beneficial solution because it:

• retains the original design of the vehicle manufacturer,
• enables economical repair of the sliding door zone,
• allows for maintaining consistency with other body components.

In the case of locks and latches, original used components often provide a better fit than universal aftermarket replacements.

Benefits of using the original mechanism

Using this lock in a Mercedes W639 translates into several significant operational benefits:

• Proper sliding door operation – correct locking and unlocking reduces the load on guides and hinges.
• Safety of use – a properly functioning lock reduces the risk of accidental door opening while driving.
• Compatibility with factory systems – the mechanism works with the original control system and body structure.

As a result, the lock is a functional solution for both post-accident repairs and standard replacement of worn-out locking elements.

Repair expansion – Mercedes locks and latches

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

More about the use of used parts

If you want to better utilize the potential of used body components and learn practical tips on selecting parts for tuning and repairs, it is worth reading the article The best used parts for tuning your car, which discusses the advantages of consciously choosing verified parts from the secondary market.