Gearbox Mount BMW F10 F11 F12 Supporting Bracket Transmission Support 6781235

BMW F10 F11 F12 N55 Transmission Mount is a component from the Transmission and Drive Mounts category, designed for use in BMW vehicles equipped with the N55 engine and an automatic transmission. This is a used OEM component that allows for technically correct restoration of the factory transmission support and stable load transfer to the body.

Specifications and technical data

• SKU: 6781235-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6781235
• Substitutable numbers: 6781235, 22326781235, KD
• Gearbox type: Automatic
• Category: Transmission & Drivetrain Mounts

Purpose and Function of the Mount

The transmission mount is responsible for the rigid yet controlled attachment of the automatic transmission to the vehicle's structure. In BMW F-series models with the N55 engine, it plays a crucial role in:

• maintaining the correct position of the transmission relative to the engine and drivetrain,
• transferring dynamic loads generated during acceleration, braking, and gear changes,
• limiting unwanted vibrations and stresses within the drivetrain.

By preserving the factory mounting geometry, this component supports the proper operation of the automatic transmission and other drive components.

Benefits of Using an Original BMW Mount

Using a mount from the BMW group ensures compliance with factory design specifications. In practice, this means:

• correct fitment with mounting points on the body and transmission,
• appropriate rigidity and durability under operating conditions typical for the N55 engine,
• maintaining proper cooperation with other components in the Transmission and Drive Mounts category.

For the user, this translates to stable automatic transmission operation, reduced risk of incorrect drivetrain alignment, and less stress on other mounting elements.

Application in Vehicles with Automatic Transmission

In BMW vehicles with the N55 engine and an automatic transmission, the mount operates in an environment of increased loads resulting from torque and the mass of the drivetrain. A properly selected mounting element:

• supports smooth automatic transmission operation by maintaining the coaxial alignment of the engine-transmission connection,
• limits excessive drivetrain movement during sudden load changes,
• helps reduce vibration transfer to the body and interior of the vehicle.

Therefore, replacing a worn or damaged mount with a functional OEM component is an important step in restoring proper drivetrain operation.

Product Condition and Economic Aspect

The offered mount is a used part, allowing for a favorable compromise between repair cost and maintaining the original BMW technical specification. For many users and workshops, this is a rational solution for servicing vehicles with automatic transmissions, especially when a quick replacement of the mounting element is necessary.

If you want to better understand the specifics of transmission operation and the impact of mounting elements on performance, the guide on selecting and operating transmissions will be useful: Transmission: Manual, Automatic, or DSG – Common Faults and Used Transmission Buying Guide.

For a conscious comparison of service solutions in terms of budget and quality, you can also use the analysis dedicated to new and used parts: New or Used? Comparing the Cost and Quality of Car Parts.

Selecting Other BMW Transmission and Drive Mounts

For comprehensive drivetrain servicing, it is also worth considering other elements responsible for supporting and stabilizing the drivetrain in your BMW, such as additional brackets or mounts that work with the automatic transmission. Check available parts in the BMW Transmission and Drive Mounts category.