Audi A8 4H Rear Subframe Bracket Brace Undertray Holder Right O/S 4H0399656B

Audi A8 4H Rear Subframe Bracket Brace Undertray Holder Right O/S is an original structural component from the Brackets, mounts and mounting parts group, designed for the rear right section of the Audi A8 4H generation body. This used OEM component allows for the precise restoration of factory suspension geometry and stable support of the subframe in the rear area of the vehicle.

Specifications and technical data

• SKU: 4H0399656B
• Mark: Audi
• Condition: Used
• OEM Part Number: 4H0399656B
• Substitutable numbers: 4H0399656B, 4H0 399 656 B
• Location on the vehicle: Rear, Right
• Category: Mounts, Brackets & Hardware

Purpose and function of the subframe bracket

The Audi A8 4H Rear Subframe Bracket Brace Undertray Holder Right O/S is responsible for the rigid, controlled mounting of structural elements in the rear section of the Audi A8 4H. Its function is to:

• ensure stable support for the subframe in the right part of the rear suspension,
• maintain the correct position of load-bearing elements relative to the body,
• reduce unwanted movement and stress in the mounting zone,
• work in conjunction with other brackets and mounts to maintain proper axle geometry.

Thanks to its specific model fitment, the bracket performs in a predictable manner, which helps maintain ride comfort and proper suspension operation over the long term.

Compatibility and fitment for Audi A8 4H

The element has been designed specifically for the Audi A8 4H platform, taking into account the characteristic construction of the rear body section. This means:

• factory mounting points consistent with the manufacturer's original design,
• appropriate geometry for the right side of the rear axle,
• consistency with other brackets, mounts, and mounting parts in this area.

Such fitment facilitates installation and reduces the need for additional modifications, which is important both for accident repairs and when replacing worn structural components.

Characteristics of the used OEM component

As a part from the Brackets, mounts and mounting parts segment, the bracket is an essential component of the load-bearing structure in the rear area of the vehicle. A used OEM component is a solution that allows you to:

• preserve the original operating characteristics of the Audi structure,
• maintain material and design consistency with other body elements,
• optimize repair costs while maintaining factory manufacturing standards.

Choosing an original bracket instead of an aftermarket replacement promotes precise alignment with the body and other mounting points, which is significant when setting geometry and during subsequent vehicle operation.

Application in rear right body repairs

The subframe bracket mounted in the rear right section of the Audi A8 4H is primarily used for:

• repairs following mechanical damage in the rear axle area,
• replacing deformed or corroded brackets and mounts,
• restoring the factory alignment of mounting lines in the rear subframe zone.

Precise reconstruction of the mounting system affects proper vehicle handling, even load distribution, and the durability of other suspension components.

Modernization expansion and technical knowledge

If you are planning a comprehensive repair or modernization of the rear body mounting zone in your Audi and need other elements from the same group, such as additional brackets, mounts, or mounting parts, check out the available parts in the Audi Brackets, mounts and mounting parts category.

When performing modernization work inside the vehicle, it is also worth taking care of the ergonomics and comfort of the driver and passengers – you can find practical tips and inspiration in the article Car interior tuning with Global Parts, which discusses the use of used equipment elements in conscious cabin tuning.