Audi R8 Driveshaft Output Shaft Rear Right O/S 420501204

Visual condition of the part

The product shows signs of use visible in the photos.

The Audi R8 Driveshaft Output Shaft Rear Right O/S is a precision drivetrain component designed for installation on the rear right side of the vehicle. As part of the Driveshafts group, it ensures stable torque transmission from the differential to the wheel, supporting reliable handling and predictable vehicle behavior. This used OEM component is a sensible choice for specialized repairs where structural compatibility and cost control are essential.

Specifications and technical data

• SKU: 420501204-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 420501204
• Substitutable numbers: 420501204, 420 501 204
• Location on the vehicle: Rear, Right
• Part type: Driveshaft
• Category: Driveshafts

Purpose and vehicle placement

The described output shaft is designed to operate in the rear axle of the Audi, on the right side. Its placement in the drivetrain zone means the component works directly with the differential and the half-shaft, transferring loads resulting from acceleration, engine braking, and dynamic changes in traction. Precise fitment to the suspension geometry and drivetrain of the Audi R8 allows for maintaining factory handling characteristics and proper operation of traction and stability control systems.

Technical and functional characteristics

The output shaft from the Driveshafts group operates in a demanding environment – it transfers high torque, is exposed to variable torsional and impact loads, and works with bearing elements and differential seals. The OEM design ensures:

• maintenance of drivetrain alignment and rigidity,
• proper cooperation with splines and factory mounts,
• appropriate dimensional tolerance for correct sealing and lubrication,
• compatibility with standard Audi suspension and drivetrain components.

Thanks to this, replacing a damaged shaft with an original used part allows for restoring proper drivetrain operation without the need to modify other sub-assemblies.

Condition, origin, and benefits of using a used part

The offered output shaft is a used part, sourced from dismantling, which allows for combining compliance with factory specifications with an attractive price compared to a new component. In practice, this means:

• preservation of original geometry and drivetrain operating parameters,
• possibility of economical repair in case of mechanical damage or wear of the previous element,
• no need to use replacements of uncertain quality.

For workshops specializing in the Audi brand and users who care about the technical consistency of the vehicle, a used OEM element is often the most rational service solution.

Application in service practice

The rear right output shaft is used for repairs such as mechanical damage within the differential, excessive play in the drivetrain, or consequences of a collision in the rear part of the vehicle. Replacing this element is important when the following occur:

• knocking or vibrations coming from the rear axle during acceleration,
• uneven torque transfer to the wheels,
• signs of wear on splines or mating surfaces.

Selecting the correct output shaft for the specific Audi R8 drivetrain configuration is crucial for maintaining the durability of the differential and driving comfort.

If you are planning a comprehensive repair or upgrade of the drivetrain zone in your Audi and need other elements from the same group, such as half-shafts, joints, or additional torque transmission components, check the available parts in the Audi Driveshafts category.

Technical support and gear ratio selection

When working with the Audi R8 drivetrain, it is worth paying attention to the selection of gear ratios and compatibility with the used differential, especially in modified or track-used cars. To better understand the relationships between the drive axle, differential, and driving characteristics, the following article will be helpful: Dismantled drive axles and differentials – how to choose gear ratios for your driving style.

For workshops and users who want to limit vehicle downtime during drivetrain repairs, the material describing the impact of a wide warehouse assortment on order fulfillment time may also be useful: how a wide assortment in one warehouse shortens car downtime at the mechanic.