Audi A4 B8 3.2 FSI Engine Mount Gearbox Transmission Support Bracket 8K0399151DB

Visual condition of the part 

The product shows signs of use visible in the photos. 

Audi A4 B8 3.2 FSI Engine Mount Gearbox Transmission Support Bracket is a precision component from the Engine mounts category, responsible for a stable connection between the powertrain unit, the gearbox, and the chassis. A properly selected mount reduces unwanted vibrations, improves the refinement of the drivetrain, and contributes to driving comfort and the durability of other components.

Specifications and technical data

• SKU: 8K0399151DB
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0399151DB
• Substitutable numbers: 8K0399151DB, 8K0 399 151 DB
• Category: Engine Mounts

Function and role of the engine mount in the Audi A4 B8 3.2 FSI

The presented mount operates in the critical area where the engine connects to the gearbox, transferring loads generated during acceleration, engine braking, and gear shifting. A properly selected engine mount helps maintain the correct geometry of the drivetrain, which translates into:

• reduced vibrations transmitted to the chassis and cabin interior,
• more stable operation of the powertrain at higher RPMs,
• lower stress on other engine and gearbox mounting components.

For the 3.2 FSI unit, the correct mount is particularly important during dynamic driving, where the forces acting on the drivetrain are significantly higher than in lower-powered engine versions.

Compatibility and fitment for the powertrain

The bracket has been designed specifically for the Audi architecture, ensuring it retains factory mounting points and works with original powertrain suspension components. This means:

• secure fitment to factory mounting holes,
• retention of the manufacturer-intended engine and gearbox position,
• easier installation for the mechanic, without the need for modifications.

Such a solution limits the risk of stress in the system and unwanted play, which could cause knocking, vibrations, or accelerated wear of other components.

Product characteristics and condition

The offered mount is an Audi brand part, which ensures the preservation of the original geometry, material, and operating parameters intended for this model. The item is in used condition, which in practice means it has been in service but can still perform its function as a replacement part in the drivetrain.

Choosing an original component from this group is beneficial especially where precise fitment with other Engine mounts and predictable behavior under load are required. This is a preferred solution for many mechanics when repairing vehicles with more powerful gasoline engines.

Benefits of replacing the engine mount and gearbox support

Replacing a worn mount with a functional part allows for the restoration of proper drivetrain operation. In practice, the driver may notice:

• more stable starting and gear shifting,
• reduction of jerking during sudden acceleration or deceleration,
• reduced noise and resonance in the cabin.

For a workshop, installing such a component is an opportunity to perform comprehensive service on the engine and gearbox mounting zone, especially when other support points of the powertrain are being checked in parallel.

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

Support for part selection by OEM number

For components such as the engine mount and gearbox support, precise fitment based on the OEM number and vehicle configuration is crucial. If you want to verify compatibility with a specific engine and equipment version step-by-step, use the practical tips included in the guide on how to choose the right car part by VIN and OEM number.

For users interested in the broader context of powertrain operation and the influence of engine design on accessory selection, an interesting supplement to your knowledge may be the comparative article BMW N47 vs M57 / M57N / M57N2 – a ranking of legendary diesels, which shows how engine parameters and characteristics translate into operation and the second-hand parts market.