Audi A4 B8 2.0 TDI Diesel CJCB Cross Brace Gearbox Bracket Mount 8T2399345L

The Gearbox Bracket Mount (cross brace / gearbox bracket mount) for Audi A4 B8 2.0 TDI is an original mounting component from the Clamps and Mounting Parts group, designed for powertrain systems with a diesel engine and manual gearbox. It ensures stable support for the powertrain unit, which translates to predictable vehicle behavior and correct operation of the drivetrain.

Specifications and technical data

• SKU: rhd-8T2399345L
• Mark: Audi
• Condition: Used
• OEM Part Number: 8T2399345L
• Substitutable numbers: 8T2399345L, 8T2 399 345 L
• Fuel type: Diesel
• Gearbox type: Manual
• Category: Brackets & Hardware

Application and Function in Audi A4 B8 2.0 TDI

The gearbox bracket mount operates in an area of high mechanical stress, connecting the gearbox to the vehicle's body structure. It is responsible for:

• maintaining the correct geometry of the powertrain unit relative to the body,
• limiting undesirable gearbox movements during acceleration and engine braking,
• stabilizing the powertrain during gear changes in a manual transmission,
• reducing stress transferred to other engine and gearbox mounting components.

Thanks to this, the drivetrain in the Audi A4 B8 2.0 TDI maintains predictable operating parameters, and the risk of excessive vibrations and noise is reduced.

Construction, Fitment, and Mounting Category

This component belongs to the Clamps and Mounting Parts category, meaning it is designed as a precision structural connector. Its shape and mounting points are adapted to the Audi chassis architecture, ensuring that:

• it fits factory mounting points without the need for modifications,
• it maintains the correct position of the gearbox relative to the drive shafts and supports,
• it works in conjunction with other engine and gearbox mounting components.

Its original Audi origin promotes adherence to factory dimensional tolerances and strength parameters.

Compatibility with Diesel / Manual Powertrain

The presented bracket is intended for diesel engines and manual gearboxes. This is important because:

• diesel engines generate characteristic vibrations and torque, requiring appropriately selected mounting,
• manual transmissions operate under different dynamic load ranges than automatic ones,
• the mounting geometry is optimized for a specific drive configuration.

This ensures that the part maintains correct operating parameters under real-world conditions, without the risk of improper fit or excessive stress.

Characteristics of a Used OEM Part

The offered bracket is a used original Audi part, which in practice means it retains factory geometry, material, and manufacturing technology. Compared to aftermarket alternatives:

• it ensures predictable fitment to the vehicle's structure,
• it reduces the risk of installation problems,
• it maintains compliance with original design specifications.

If you want to better understand why original mounting parts are a safe choice for repairs, check out the article on the advantages of used OEM parts and their impact on vehicle safety.

Why Choose This Gearbox Bracket Mount

Replacing a worn or damaged gearbox bracket with an original element from the same design family allows you to:

• restore the stability of the gearbox mounting in the Audi A4 B8 2.0 TDI,
• maintain correct cooperation between the diesel engine and the manual transmission,
• minimize the risk of additional stress on engine mounts and other mounting points,
• preserve the factory driving characteristics and refinement of the powertrain.

For users who expect predictable installation and compliance with service documentation, the original Audi gearbox bracket mount is a sensible, technically justified choice.