Audi R8 42 Gearbox Mount Transmission Bracket Mount Left Right N/O/S 420399113A

Audi R8 42 Gearbox Mount Left Right is an original part from the gearbox and drive mounts category, designed for stable support of the powertrain in the Audi R8 42 generation. Precise geometry and factory construction ensure proper load transfer and reduced vibration transmitted to the body.

Specifications and technical data

• SKU: 420399113A
• Mark: Audi
• Condition: Used
• OEM Part Number: 420399113A
• Substitutable numbers: 420399113A, 420 399 113 A
• Location on the vehicle: Right, Left
• Part type: Transmission Mount
• Category: Transmission & Drivetrain Mounts

Purpose and Function of the Audi R8 42 Gearbox Mount

The left/right gearbox mount is responsible for the stable connection of the gearbox to the vehicle's structure, while simultaneously damping vibrations and compensating for powertrain movements. For the sporty Audi R8 42, the proper condition of these components is crucial for:

• maintaining predictable vehicle behavior during dynamic acceleration and engine braking,
• reducing vibrations and noise transmitted to the cabin,
• protecting the gearbox and drivetrain from excessive stress resulting from suspension and body work.

The part includes positions mounted on the right and left sides, allowing for a consistent reproduction of the factory gearbox support system.

Construction and Fit for the Drivetrain System

The original Audi gearbox mount has been designed specifically for the R8 42 model's architecture, taking into account weight distribution, drive characteristics, and suspension geometry. Thanks to this:

• mounting points are aligned with factory holes in the subframe and gearbox housing,
• structural rigidity is calibrated to ensure stability under high loads,
• elastic elements (integrated into the mount) operate within the manufacturer's specified range, contributing to the overall system's durability.

Such a fit minimizes the risk of incorrect powertrain alignment, which could lead to accelerated wear of joints, shafts, or the gearbox itself.

Vehicle Placement and Installation Aspects

The presented mount is intended for installation on the right and left sides of the gearbox assembly. Clearly defined vehicle placement facilitates the mechanic's work and helps avoid installation errors. In practice, this means:

• maintaining the correct gearbox position relative to the engine and drive shafts,
• proper cooperation with other drivetrain mounts (engine mounts, brackets),
• the possibility of using factory mounting points without the need for structural modifications.

Selecting the part based on the OEM number and compatibility with the R8 42 generation ensures that the parameters specified by the vehicle manufacturer are maintained.

Benefits of Using an Original Audi Mount

Choosing an original Audi gearbox mount over an arbitrary aftermarket alternative directly impacts the drivetrain's durability and refinement. The most significant advantages include:

• factory fit for Audi R8 42 – no issues with geometry, play, or interference with other components,
• maintaining the designed vibration damping characteristics – crucial in a high-performance sports car,
• reduced risk of unwanted vibrations and resonances that can occur with unsuitable aftermarket parts.

If you are considering a broader replacement of drivetrain support elements, it's worth consulting a guide on the used parts market. Practical information can be found in the article “Why Buying Used Gearboxes and Engines is Worth It – Facts Instead of Myths”, which discusses, among other things, selecting components by OEM numbers and real cost differences.

Why a Used OEM Mount is a Sensible Choice

For a specialized model like the Audi R8 42, using a used OEM part is often more rational than installing an unreliable aftermarket replacement. An original gearbox mount retains:

• material and structural compatibility with other drivetrain components,
• predictable behavior under load, consistent with Audi engineers' intentions,
• the possibility of seamless installation in place of the factory mount.

If you want to better understand when a used OEM part is more advantageous than an aftermarket one, the expert guide “5 Reasons Why a Used OEM Part is a Better Choice Than an Aftermarket Replacement” will be helpful, describing practical selection criteria with examples of popular models.

If you are looking for other Audi gearbox and drive mounts compatible with specific models of this brand, check out our dedicated category: Audi Gearbox and Drive Mounts. This will allow you to easily compare available solutions within a single manufacturer and select the right part for your car.