Audi A6 C8 Cross Member Transmission Support Frame Mount Bracket 4K0399262Q

Audi A6 C8 Cross Member Transmission Support Frame Mount Bracket is an original structural component designed for stable support of the transmission within the chassis. Thanks to its factory geometry and precise fitment for the A6 C8 platform, it ensures proper load transfer from the drivetrain and maintains the correct position of the transmission relative to the body.

Specifications and technical data

• SKU: 4K0399262Q
• Mark: Audi
• Condition: Used
• OEM Part Number: 4K0399262Q
• Substitutable numbers: 4K0399262Q, 4K0 399 262 Q
• Part type: Transmission Mount
• Category: Transmission & Drivetrain Mounts

Purpose and function in the drivetrain

This component from the Transmission and Drivetrain Mounts category is responsible for the rigid yet controlled mounting of the transmission to the vehicle's subframe. A correctly selected bracket:

• maintains the alignment of the transmission relative to the engine and drive shafts,
• limits unwanted movement of the powertrain during acceleration and braking,
• supports the operation of transmission mounts, reducing excessive vibrations transmitted to the body,
• ensures stable operating conditions for associated components (joints, shafts, accessories). By maintaining the factory structural rigidity, the bracket helps ensure smooth operation of the drivetrain and reduces the risk of premature wear of adjacent components.

Original origin and Audi fitment

As an Audi OE line product, the bracket was designed specifically for the chassis geometry of the A6 C8 generation. This means:

• preservation of factory mounting points on the body and transmission,
• compatibility with original bolts and mounting hardware,
• consistency with factory dimensional tolerances and structural rigidity. The original structural component is particularly important in the drivetrain area, where even minor deviations in position can lead to vibrations, noise, or leaks at mechanical connections.

Characteristics of the used component

The offered bracket comes from the used parts category, which allows for economical repair while maintaining original build quality. As a massive structural component, this type of part does not have typical wear items, meaning it can be safely reused in a vehicle when properly inspected. In practice, this means the ability to restore proper transmission mounting without the need to invest in a new component, while maintaining factory geometry and mounting compatibility.

Installation tips and service application

The transmission support frame mount bracket is most commonly used during:

• post-collision repairs within the chassis and drivetrain area,
• replacement of damaged or deformed transmission mounting components,
• comprehensive overhauls of the transmission and its accessories,
• restoring factory handling parameters and driving comfort. Installation in a workshop environment is recommended, adhering to the tightening torques specified by the vehicle manufacturer and checking the alignment of the powertrain relative to the body. A correctly installed bracket provides a stable base for further service work within the transmission and drivetrain.

Selection by part numbers and technical support

Due to structural differences between body versions and drivetrain variants in the A6 C8, the selection of the correct bracket should be based on manufacturer markings or vehicle data. Proper fitment minimizes the risk of installation issues and guarantees the maintenance of the rigidity intended by the manufacturer. If you would like to deepen your knowledge regarding the informed selection of transmission and drivetrain-related components, including procedures for selection by VIN and manufacturer markings, it is worth checking out the expert guide Why it is worth buying used transmissions and engines – facts instead of myths, which discusses practical aspects of working with original used parts. 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, subframes, or transmission support elements, check out the available parts in the Audi Transmission and Drivetrain Mounts category.