Audi A7 4G8 A8 D4 Transmission Retaining Plate Stop Buffer Right O/S 4G0399060G

Audi A7 4G8 A8 D4 Transmission Retaining Plate Stop Buffer Right O/S is a precision component from the Transmission and Drivetrain Mounts category, designed for Audi models with diesel engines. It is responsible for providing stable, controlled support for the transmission mount on the right side, which results in smoother drivetrain operation and reduced vibrations transmitted to the vehicle body.

Specifications and technical data

• SKU: 4G0399060G
• Mark: Audi
• Condition: Used
• OEM Part Number: 4G0399060G
• Substitutable numbers: 4G0399060G, 4G0 399 060 G
• Location on the vehicle: Right
• Fuel type: Diesel
• Part type: Transmission Mount
• Category: Transmission & Drivetrain Mounts

Purpose and function in the drivetrain

The transmission retaining plate stop buffer on the right side in the Audi A7 4G8 and A8 D4 operates in the immediate vicinity of the powertrain, contributing to the transmission mounting structure. Its tasks include:

• maintaining the correct position of the transmission mount relative to the vehicle body,
• stabilizing transmission operation during acceleration, engine braking, and gear changes,
• limiting unwanted movement and stress in the mounting,
• working in conjunction with other drivetrain mounting components in diesel vehicles.

As a result, the drivetrain maintains predictable characteristics, and the transmission operates within the geometry designed by the manufacturer.

Compatibility with Audi diesel vehicles

The presented plate has been designed specifically for use on the right side of the drivetrain structure in the Audi A7 4G8 and Audi A8 D4 with diesel units. This ensures compatibility with:

• the body geometry and subframes of these models,
• the operating characteristics of the transmission paired with a diesel engine,
• factory mounting points in the drivetrain area.

Such a fit allows for maintaining factory vehicle handling parameters, ride comfort, and drivetrain operation without the need for modifications.

Characteristics of the used component

The plate comes from dismantling, which means it is a used part that retains a structure consistent with Audi's factory specifications. In practice, this translates to:

• original geometry of the mounting points,
• compliance with factory assembly tolerances,
• the ability to install it in place of a damaged component without interfering with the vehicle's structure.

For many users, this is a technically sound choice when repairing the transmission mounting system, especially when the priority is to maintain the original design at optimal costs.

Importance for transmission durability

A correctly selected and installed transmission retaining plate stop buffer has a direct impact on:

• even load distribution in the drivetrain,
• reducing the risk of excessive transmission vibrations,
• limiting overloads acting on mounts and brackets,
• acoustic comfort inside the vehicle.

Replacing a damaged or deformed component with a functional plate helps restore predictable drivetrain behavior, which is particularly important in heavier luxury models such as the Audi A7 and A8 with diesel engines.

Expanding the transmission mounting system

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 brackets, holders, or additional support elements, check the available parts in the Audi Transmission and Drivetrain Mounts category.

Technical support and knowledge about transmissions

When diagnosing irregular transmission operation or planning a drivetrain repair, it is worth knowing the typical symptoms and possible service scenarios. A detailed discussion of the topic can be found in the article: Manual transmission failures in cars – why is an original used part a more sensible choice than regeneration?, where symptoms of damage and the approach to selecting original used components are described, among other things.