Mercedes W447 W639 Rear Loading Door Lock Plate Upper Left N/S A6397660219

Mercedes W447 W639 Rear Loading Door Lock Plate Upper Left N/S is an original component from the Sliding door group, designed for the rear left side of the vehicle body. It provides a precise mounting base for the lock mechanism, ensuring stable operation of the sliding door as well as proper guidance and latching of the door panel.

Specifications and technical data

• SKU: A6397660219
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6397660219
• Substitutable numbers: A6397660219, A 639 766 02 19
• Location on the vehicle: Rear, Left
• Category: Cargo & Sliding Doors

Purpose and function of the component

The rear loading door lock plate upper left is responsible for the stable seating of the lock mechanism in the rear section of the body on the driver's side. It is a structural element that:

• transfers loads associated with the operation of the sliding door,
• maintains the correct geometry of the lock relative to the guides and the bodywork,
• supports smooth opening and closing of the door during daily use.

Thanks to its dedicated fitment for specific generations of Mercedes vehicles, the plate works with the factory lock mechanism and other components of the sliding door system.

Construction and body fitment

The element has been designed for installation in the rear left part of the vehicle, in the upper zone of the sliding door. The design of the plate allows for:

• precise positioning relative to the bodywork and guides,
• secure mounting of the lock and its associated sub-assemblies,
• preservation of factory mounting points and body shape.

Such a solution facilitates service and replacement of damaged components, and also reduces the risk of improper door alignment after repair.

Benefits of using an original lock plate

Using an original rear lock plate in the sliding door provides measurable operational benefits:

• Factory fitment – maintaining the correct position of the lock relative to the bodywork and seals, which promotes tightness and smooth door operation.
• Stable mechanism operation – reduction of play and unwanted stresses in the sliding door system.
• Easier adjustment – the ability to precisely set the lock position during service installation.

This solution is particularly recommended for post-accident repairs, replacing corroded structural elements, or restoring full functionality of sliding doors in intensively used vehicles.

Characteristics of the used product

The offered rear loading door lock plate upper left comes from dismantling, which allows for maintaining the original manufacturer's specification while reducing repair costs. A used element of this type is a good solution when you care about:

• maintaining factory mounting geometry,
• compatibility with the existing lock mechanism,
• economical restoration of sliding door efficiency.

Choosing an original component from the secondary market is particularly beneficial for professionally used vehicles, where operational predictability and compliance with factory solutions are important.

Expansion of the Mercedes sliding door system

If you are planning a comprehensive repair or upgrade of the side zone with sliding doors in your Mercedes and need other elements from the same group, such as guides, rollers, or additional lock mounts, check the available parts in the Mercedes Sliding door category.

For users interested in a broader approach to repairs using original components from the secondary market, valuable information on the advantages of using used OEM parts in the drivetrain can be found in the article Humming differential? Find out why a used OEM drive axle is a better investment than an uncertain replacement.