Mercedes W639 Side Rail Cover Rear Left N/S Sliding Door Panel Flint Grey - 368

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W639 Side Rail Cover Rear Left N/S Sliding Door Panel Flint Grey is a precisely engineered body component from the Doors and door panels group, designed for the rear left area of the vehicle. The cover protects the sliding door rail, improving the mechanism's operation and the aesthetics of the side body section. This used component in the original Flint Grey Metallic - 368 color allows for a seamless match with the factory paint of the car.

Specifications and technical data

• SKU: A6396913008-FLG
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6396913008
• Substitutable numbers: A6396913008, A 639 691 30 08
• Location on the vehicle: Rear, Left
• Color: Flint Grey Metallic - 368
• Category: Doors & Door Skins

Purpose and technical function

The rear left rail cover has been developed specifically for Mercedes W639 series models, where sliding doors require stable protection for the running mechanism. The component performs several key technical functions:

• protects the door rail from dirt and moisture,
• limits the ingress of small debris into the roller operating area,
• supports the maintenance of smooth door sliding during daily use,
• visually organizes the lower part of the side body area.

Thanks to the precise fit for the rear left part of the vehicle, installation is straightforward, with no structural modifications required.

Compatibility and color matching

The cover is dedicated to the W639 body type by Mercedes, ensuring dimensional compatibility with factory mounting points in the sliding door area. The use of paint in the Flint Grey Metallic - 368 shade allows for aesthetic integration of the element into the vehicle's side line without the need for additional painting, provided the car has the same color code.

Such a match is particularly beneficial for accident repairs or replacing individual body components, where both correct geometry and visual consistency are essential.

Characteristics of the used component

The presented rail cover belongs to the group of used parts, which represents a reasonable compromise between repair costs and maintaining the manufacturer's original specifications. In practice, this means:

• preservation of factory geometry and mounting points,
• compliance with the original body line,
• the possibility of an economical replacement of a damaged element without interfering with the door structure.

Choosing such a component is particularly advantageous for vehicles in intensive use, where functionality, proper fitment, and service cost control are priorities.

Benefits of using the original rail cover

Using a rail cover dedicated to the Mercedes W639 translates into a number of practical advantages:

• Stable sliding door operation – reducing the impact of contaminants on the rail and rollers.
• Consistent body appearance – the Flint Grey Metallic - 368 color helps maintain the uniform character of the vehicle's side section.
• Hassle-free installation – the element from the Doors and door panels group is designed for a specific body, which facilitates service.

For workshops and individual users, this means faster repair completion and a lower risk of fitment issues.

Expanding repairs within the doors and door panels area

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 skins, reinforcements, or additional panels, check out the available parts in the Mercedes Doors and door panels category.

More about choosing used parts

If you want to better plan your repair budget and consciously choose components from the secondary market, it is worth familiarizing yourself with practical tips regarding the purchase of body and equipment elements. You can find useful information in the article Used parts – Your guide to the best offers in the automotive store, which helps evaluate the cost-effectiveness and safety of using pre-owned components.