Spare Wheel Bracket Mercedes W639 W447 Mount Support Holder A6398900814

Visual condition of the part

The product shows signs of use visible in the photos.

Spare Wheel Bracket Mercedes W639 W447 Mount Support Holder is a factory-made structural component designed for the secure suspension and stable retention of the spare wheel in W639 series models. A properly selected bracket ensures a secure mount, reduces unwanted vibrations, and facilitates wheel handling during service conditions. Thanks to the use of an original solution, compatibility with factory body mounting points is maintained, which translates into predictable vehicle behavior and the correct operation of the entire spare wheel support system.

Specifications and technical data

• SKU: A6398900814
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6398900814
• Substitutable numbers: A6398900814, A 639 890 08 14, KD
• Category: Spare Tyre Carriers & Covers

Purpose and technical function

The presented bracket is a component from the Spare wheel holders and covers group, responsible for physically holding the spare wheel in its designated position under the vehicle or in its rear section (depending on the specific body configuration). The design has been engineered for:

• bearing the loads resulting from the weight of the spare wheel,
• limiting wheel movement when driving over uneven surfaces,
• ensuring service access to the wheel in the event of a tire failure.

The original bracket dedicated to the W639 series allows for maintaining the correct mounting geometry, which is important for both safety and the durability of the bodywork at the mounting point.

Benefits of using the original bracket

Using a factory solution in a Mercedes vehicle translates into a number of practical advantages in daily operation:

• secure and repeatable fit to factory mounting points,
• maintenance of the spare wheel position relative to the chassis as intended by the manufacturer,
• reduced risk of play, rattling, and unwanted vibrations in the rear of the vehicle,
• easier service handling – removal and reinstallation of the spare wheel in accordance with the manufacturer's procedure.

For commercial vehicles that often operate at full load, a properly secured spare wheel is important not only for operational reasons but also for safety – a stable mount limits the possibility of damage to components adjacent to the wheel.

Characteristics of the used component

The offered bracket comes from the group of used parts, which allows for economical repair or restoration of the spare wheel mounting system while maintaining the original design. In practice, this means:

• preservation of the factory geometry and shape of the component,
• possibility of installation in place of a missing or damaged holder without additional modifications,
• favorable cost-to-functionality ratio compared to new aftermarket replacements.

Before installation, it is recommended to perform a standard verification of the condition of working surfaces and mounting points, as well as potential anti-corrosion protection in accordance with the accepted service procedure for the given vehicle.

Selecting parts by brand and catalog numbers

To ensure the correct fit of the bracket to a specific body version and vehicle configuration, it is worth verifying compatibility based on manufacturer markings and vehicle data. In case of doubt, it is helpful to compare the shape and mounting method with the component originally installed in the car or with service documentation. This minimizes the risk of installing an unsuitable holder and potential problems with the spare wheel position.

If you are planning a comprehensive repair or upgrade of the rear zone in your Mercedes and need other components from the same group, such as additional holders, covers, or cable mounts, check the available parts in the Mercedes spare wheel holders and covers category.

Expert support and additional information

When planning broader service work within the drivetrain and components interacting with the wheels, it is worth familiarizing yourself with expert materials. Expanded information on diagnostics, selection, and integration of drivetrain components can be found in the article Clutch and dual-mass flywheel – diagnostics and selection of parts for the drivetrain, which discusses practical aspects of working with components in vehicles with complex designs.

If you are considering using original, aftermarket, or used parts in your car and want to consciously choose a solution in terms of cost and quality, the guide Original, aftermarket, or used – which car parts are the most cost-effective?, containing comparisons and tips on optimal component selection, will be helpful.