Gearbox Mount Mercedes W639 W906 Automatic Transmission Holder A9063740040

Gearbox Mount Mercedes W639 W906 Automatic Transmission Holder is a factory-original drivetrain component designed for use with automatic transmissions in Mercedes vehicles. It is responsible for providing stable support and precise positioning of the gearbox, which translates into smooth drivetrain operation and reduced vibrations transmitted to the vehicle body. This used OEM component is a sensible choice for users looking for a technically compatible solution at an attractive price.

Specifications and technical data

• SKU: A9063740340
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A9063740340
• Substitutable numbers: A9063740340, A 906 374 03 40, A9063740040, A 906 374 00 40, KD
• Gearbox type: Automatic
• Category: Transmission & Drivetrain Mounts

Purpose and function in the drivetrain

The Gearbox Mount Mercedes W639 W906 Automatic Transmission Holder operates at a critical junction where the transmission connects to the vehicle's structure. Its tasks include:

• maintaining the automatic transmission in the correct position relative to the body,
• transferring loads resulting from drivetrain operation,
• limiting unwanted transmission movement during acceleration, braking, and gear changes,
• working in conjunction with other components in the Gearbox and drivetrain mounts category to improve ride comfort.

Thanks to its properly selected geometry and structural rigidity, the mount helps maintain stable operation of the automatic transmission, which is important for both component durability and overall system refinement.

Benefits of using an original mount

Using an original mount in a Mercedes W639 or W906 provides a number of practical operational benefits:

• Factory fitment – maintaining the correct transmission position without the need for modifications or adjustments.
• Consistent cooperation with other drivetrain mounts, which reduces the risk of excessive vibration and noise.
• Stable support for the automatic transmission, promoting even loading of mounts and other mounting hardware.
• The ability to restore correct system geometry after a collision, transmission replacement, or other drivetrain repairs.

This used OEM component is a compromise between quality and cost – you retain a design consistent with the manufacturer's specifications while avoiding the expenses typical of new parts.

Application in vehicles with automatic transmission

The presented mount is designed for use with an automatic transmission, which is important when selecting parts for a specific drivetrain configuration. Automatic transmissions generate different loads than manual ones, which is why the correct mount affects:

• smoothness of gear shifts,
• reduction of jerking during starting and downshifting,
• reduction of stress on the transmission housing and associated components.

Selecting the appropriate mount is particularly important after a transmission replacement, post-accident repairs, or when disturbing vibrations appear in the center tunnel area.

Condition, verification, and installation

The offered Gearbox Mount Mercedes W639 W906 Automatic Transmission Holder is a used part, meaning it has been removed from a vehicle and verified for further serviceability. Such a component, when installed correctly, can continue to provide stable transmission support and proper interaction with other drivetrain mounts.

Before installation, it is recommended to check other components in the mounting group, such as bushings and associated brackets, to avoid transferring excessive loads to a single mounting point. A properly selected and installed mount helps restore predictable drivetrain behavior and improve ride comfort.

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Mercedes and need other components from the same group, such as additional brackets, bushings, or mounting hardware, check the available parts in the Mercedes gearbox and drivetrain mounts category.

For a better understanding of the differences between replacement and refurbishment of transmission-related components, it is worth reading the guide on our blog – you will find practical tips in the article Manual transmission failures in cars – why is an original used part a more sensible choice than refurbishment?.