Audi RS4 B8 Gearbox Mount Transmission Support Bracket Holder 8K0399115S

Audi RS4 B8 Gearbox Mount Transmission Support Bracket Holder is a component from the Engine mounts group, responsible for providing stable and controlled support for the powertrain in Audi petrol vehicles. A properly selected transmission mount reduces vibration transfer to the chassis, improves drivetrain refinement, and supports handling precision. This component is designed for demanding users who expect robust construction and predictable drivetrain behavior.

Specifications and technical data

• SKU: 8K0399115S
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0399115S
• Substitutable numbers: 8K0399115S, 8K0 399 115 S
• Fuel type: Petrol
• Category: Engine Mounts

Function and role of the transmission mount in the Audi RS4 B8

The Audi RS4 B8 Gearbox Mount Transmission Support Bracket Holder operates in the immediate vicinity of the powertrain and transmission, absorbing loads resulting from torque and gear changes. A properly selected component:

• stabilizes the position of the gearbox relative to the chassis,
• limits unwanted powertrain movement during rapid acceleration and engine braking,
• reduces the level of vibration and noise felt in the cabin,
• supports the durability of other engine mounts and accessories.

For powerful petrol units, such as those in the RS4 B8, the appropriate stiffness and geometry of the mount are crucial for maintaining the consistency of the entire drivetrain operation.

Benefits of using an original Audi component

Using an original Audi solution for the transmission mount ensures precise fitment to factory mounting points and compatibility with the characteristics of the petrol engine. As a result:

• the factory geometry of the gearbox relative to the engine and chassis is maintained,
• there is no need to modify mounting holes or fabricate adapters,
• the drivetrain works correctly with other Engine mounts,
• the risk of premature wear of joints, half-shafts, and suspension components is reduced.

This approach is particularly important in higher-power vehicles, where the drivetrain operates under greater load and requires stable, predictable support.

Application in petrol vehicles

The presented mount has been designed to work with petrol engines, which means it is adapted to the dynamic loads and RPM ranges characteristic of them. In practice, this translates into:

• smoother torque transfer at high RPMs,
• better control over powertrain movement during dynamic driving,
• reduced jerking during gear changes.

For drivers utilizing the full potential of the petrol unit in the RS4 B8, a proper transmission mount is an important element in maintaining the stability and consistent behavior of the car.

Condition, selection, and installation of the component

The offered Audi RS4 B8 Gearbox Mount Transmission Support Bracket Holder is a secondary market component, which allows for an economical replacement while maintaining proper functionality. Before installation, it is recommended to:

• verify compatibility with the specific version of the Audi RS4 B8,
• inspect other mounts from the Engine mounts group,
• check the condition of bolts and mounting points on the chassis and the gearbox.

Professional installation at a specialized service center will allow you to fully utilize the advantages of this component and reduce the risk of incorrect powertrain alignment.

If you are planning a comprehensive repair or upgrade of the engine and transmission area in your Audi and need other elements from the same group, such as additional mounts, brackets, or powertrain supports, check the available parts in the Audi Engine mounts category.

For users interested in a broader context of using dismantled parts in modern cars, including advanced premium models, an article describing work with electronic modules and multimedia systems may be helpful – more information can be found in the material on servicing BMW iDrive systems and electronic modules using dismantled parts.