Audi S3 8Y Transfer Box Case Mount Bracket Holder Support 0FN409905F

Audi S3 8Y Transfer Box Case Mount Bracket Holder Support is an original mounting component from the Clamps and mounting parts group, designed for the precise support and positioning of the transfer box. As a structural part of the drivetrain, it ensures stable mounting, limits unwanted movement, and helps maintain the correct geometry of the powertrain in the Audi S3 8Y.

Specifications and technical data

• SKU: 0FN409905F
• Mark: Audi
• Condition: Used
• OEM Part Number: 0FN409905F
• Substitutable numbers: 0FN409905F, 0FN 409 905 F
• Category: Brackets & Hardware

Purpose and function of the component

The presented bracket is dedicated to the Audi S3 8Y generation model and plays a key role in mounting the transfer box to the body or subframe. It is responsible for:

• stable support of the transfer box in a specific operating position,
• transferring loads from the drivetrain to the vehicle structure,
• reducing vibrations and unwanted play in the gearbox area,
• maintaining correct alignment of drivetrain components.

This ensures that the drivetrain operates under predictable conditions, which promotes the durability of the gearbox, transfer box, and associated components.

Construction and mounting fitment

The bracket was designed by Audi as an OEM part, which means full compliance with the vehicle's factory technical documentation. The shape, mounting points, and geometry of the bracket are matched to the original mounting holes in the body and transfer box, which facilitates service and reduces replacement time.

The main structural advantages include:

• factory-spec placement of holes and contact surfaces,
• stiffness designed for specific load requirements,
• compatibility with original bolts and mounting hardware,
• preservation of the manufacturer-intended position of the transfer box relative to the gearbox.

Such fitment reduces the risk of mounting stresses, leaks, or accelerated wear of mating components.

Characteristics of the used OEM part

The offered bracket is a used part, sourced from dismantling, which allows you to combine original build quality with an attractive price. As a massive mounting component, this type of part does not suffer from rapid operational wear under typical conditions, so with proper verification, it can be safely used as a replacement in drivetrain repairs.

Choosing an original, used Audi mounting part instead of a low-quality aftermarket replacement means:

• maintaining the factory stiffness and geometry of the system,
• lower risk of fitment issues during installation,
• consistency with the vehicle's other structural components.

If you want to better understand how used OEM parts help reduce service costs, check out our article on saving on repairs with used original parts, where we discuss the real financial benefits and practical aspects of such solutions.

Application in drivetrain service and repairs

The transfer box bracket is important wherever the following occur:

• knocking or vibrations in the gearbox area when starting or changing loads,
• signs of the transfer box shifting from its factory position,
• mechanical damage to the original bracket after a collision or impact to the undercarriage.

Replacing it with a functional OEM part allows you to restore proper support for the powertrain, which can translate into smoother system operation, reduced noise, and more stable vehicle behavior during dynamic driving.

If you are planning a wider range of work on the drivetrain or suspension, it is worth verifying other elements from the Clamps and mounting parts group in parallel to avoid returning to the same service area in a short time.

Why choose an original Audi bracket

Using original mounting components in the Audi S3 8Y has a direct impact on the durability and predictable operation of the entire drivetrain. In the case of such a critical point as the transfer box mount, the following are key:

• factory fitment – no need for modifications or adjustments to the part,
• maintenance of designed stiffness – limiting unwanted movement under load,
• consistency with service documentation – easier diagnostics and installation in accordance with manufacturer procedures.

This approach is particularly important in high-performance cars, where the drivetrain operates under higher loads than in standard model versions.