Description
Audi A4 B8 A5 8T Automatic Transmission Support Bracket is an original component from the Transmission and Drivetrain Mounts group, designed for use with automatic transmissions in Audi vehicles. It provides stable support for the gearbox, reduces unwanted vibrations, and supports proper load transfer to the chassis, which translates into predictable drivetrain operation.
Specifications and technical data
- SKU: 8K0399151CN
- Mark: Audi
- Condition: Used
- OEM Part Number: 8K0399151CN
- Substitutable numbers: 8K0399151CN, 8K0 399 151 CN, 8K0399151CL, 8K0 399 151 CL
- Fuel type: Petrol
- Gearbox type: Automatic
- Part type: Transmission Mount
- Category: Transmission & Drivetrain Mounts
Purpose and function in the drivetrain
The presented bracket is a structural component responsible for maintaining the automatic transmission in the correct position relative to the chassis and the powertrain. Its tasks include:
- transferring loads resulting from gearbox operation to the vehicle structure,
- limiting powertrain movement during acceleration and engine braking,
- working with other mounts to reduce vibrations felt in the cabin.
Thanks to its precisely selected geometry and rigidity, the bracket helps maintain proper drivetrain alignment, which promotes smooth transmission operation and reduces the risk of excessive wear on adjacent components.
Compatibility with automatic transmission and fuel type
The component has been designed to work with an automatic transmission, which means it is matched to the specific loads and operating characteristics of an automatic gearbox. The bracket’s design takes into account the specifics of the drivetrain in a vehicle powered by gasoline, ensuring appropriate rigidity and the correct positioning of the gearbox relative to the engine and chassis.
Selecting the correct mount is important both for driving comfort (reducing vibration and noise) and for the durability of the entire drivetrain, including half-shafts, joints, and other mounts.
Benefits of using an original Audi bracket
Using an original bracket in an Audi A4 B8 or A5 8T allows you to maintain the factory performance parameters of the drivetrain. Key advantages include:
- precise dimensional fit to the mounting points on the chassis and gearbox,
- preservation of the geometry intended by the manufacturer,
- consistency with other elements from the Transmission and Drivetrain Mounts group,
- reduction of the risk of improper installation typical of non-OEM parts.
For the user, this means stable automatic transmission operation, predictable vehicle behavior during load changes, and a lower probability of unwanted vibrations or knocking in the center tunnel area.
Selection, installation, and service aspects
When replacing the bracket, it is recommended to check other gearbox mounting elements and the condition of the engine mounts. Proper installation includes:
- cleaning the contact surfaces with the chassis and gearbox,
- applying the correct tightening torques in accordance with service documentation,
- verifying that there are no excessive stresses or displacements of the drivetrain after installation.
As a structural element, the bracket does not require adjustment after installation, but its condition has a direct impact on driving comfort and the durability of the automatic transmission. In the event of vibrations or knocking when starting or shifting gears, checking the transmission and drivetrain mounts is one of the basic diagnostic steps.
Expanding knowledge and selecting other components
If you are planning a comprehensive repair or upgrade of the drivetrain area in your Audi and need other components from the same group, such as additional brackets, mounts, or fasteners, check the available parts in the Audi Transmission and Drivetrain Mounts category.
When working with an automatic transmission, it is also worth familiarizing yourself with the principles of gearbox selection and operation, the differences between manual and automatic transmissions, and the cost-effectiveness of purchasing used components – these issues are discussed in detail in the article Used gearbox – when is it worth it and what you need to remember, which can be a practical supplement to service information.
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