Mercedes Vito W639 Seat Box Front Left N/S Seat Mount Base Bracket A6399100505

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes Vito W639 Seat Box Front Left N/S Seat Mount Base Bracket is a factory seat mounting component designed for the driver or passenger seat on the left side. This robust seat mounting box ensures stable seat positioning within the vehicle while maintaining the original geometry and safety of the interior structure.

Specifications and technical data

• SKU: A6399100505
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6399100505
• Substitutable numbers: A6399100505, A 639 910 05 05
• Location on the vehicle: Front, Left
• Category: Centre & Overhead Console Parts

Application and compatibility

The presented item is a front left seat mounting base, dedicated to Mercedes Vito W639 generation models. The frame construction is matched to the factory mounting points in the floor and the original seat rails, which facilitates installation and ensures compliance with the manufacturer's factory solutions.

The placement in the vehicle, defined as front – left side, means that the part operates in a critical area of the cabin, responsible for the correct positioning of the seat relative to the steering wheel, pedals, and center console.

Construction and technical function

The seat frame acts as a load-bearing element for the entire seat, transferring loads from the seat to the body structure. It is responsible for:

• stable attachment of the seat to the vehicle floor,
• maintaining the correct height and geometry of the seat,
• proper alignment of the seat relative to the console and seat belts,
• maintaining connection rigidity during daily operation.

Thanks to the use of the original Mercedes design, the element maintains appropriate rigidity and fit to the interior, which reduces the risk of unwanted play, squeaks, or seat movement while driving.

Benefits of using an original seat frame

Choosing an original seat base from the Console Parts group allows you to maintain the structural consistency of the cabin and compatibility with factory mounting points. In practice, this means:

• easier installation without the need for structural modifications,
• maintaining the factory seat position and driver's ergonomics,
• better integration with other interior elements (console, center tunnel, seat belts),
• the ability to use existing mounts and seat hardware.

A used element of this type is often chosen for post-accident repairs, replacing corroded or damaged frames, and when refurbishing the interior while maintaining the manufacturer's original solutions.

Condition and intended use

The product comes from dismantling and is intended for re-installation in a vehicle after prior verification according to the user's individual requirements. This type of seat base works well both for standard replacement of a damaged element and for interior reconstruction after a collision, where maintaining the factory seat mounting geometry is crucial.

If you are planning a comprehensive repair or upgrade of the center console area and front seats in your Mercedes and need other elements from the same group, such as housings, brackets, or additional mounts, check the available parts in the Mercedes Console Parts category.

Additional information and technical support

When selecting seat mounting elements and interior components, it is worth paying attention to the vehicle generation compatibility, mounting side, and intended use for a specific cabin configuration. For more advanced work related to electronics and control modules in other brands, specialized guides may be helpful – for example, you can read about multimedia systems and control modules in BMW in the article Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 series models.

If you are considering a wider post-accident repair using dismantled parts, you will find practical tips on choosing used body and structural components in the material Post-accident repair of your car: why are used body parts a better choice than replacements?.