Audi R8 Mk1 Drive Shaft Propshaft Automatic Gearbox 4.2 FSI Quattro 420521101B

Audi R8 Mk1 Drive Shaft Propshaft Automatic Gearbox 4.2 FSI Quattro is an original drivetrain component, designed specifically for the sports model of Audi with a petrol engine. Thanks to its factory design, it ensures precise torque transmission and stable cooperation with the Quattro all-wheel-drive system. This used item from the Cardan Joints category allows for an economical, yet technically sound repair of the drivetrain.

Specifications and technical data

• SKU: 420521101B
• Mark: Audi
• Condition: Used
• OEM Part Number: 420521101B
• Substitutable numbers: 420521101B, 420 521 101 B
• Fuel type: Petrol
• Gearbox type: Automatic
• Part type: Propshaft
• Category: Propshafts

Purpose and compatibility

The presented drive shaft has been developed for the first-generation Audi R8 with a 4.2 FSI petrol engine, working in conjunction with an automatic gearbox and Quattro drive. The construction is adapted to the characteristics of the sports drivetrain, ensuring appropriate rigidity, durability, and proper interaction with the Cardan joints.

The original origin of the component helps maintain the factory geometry of the system, which translates into driving stability, reduction of vibrations, and proper operation of the all-wheel drive across a wide range of loads.

Technical characteristics and role in the drivetrain

The drive shaft in the Audi R8 4.2 FSI Quattro is responsible for transferring power from the automatic gearbox to the other components of the drivetrain. The used Cardan joints compensate for changes in operating angles resulting from suspension movement and drivetrain assembly motion, which allows for smooth torque transmission.

• ensuring a continuous, stable connection between the automatic gearbox and the Quattro drivetrain,
• reduction of unwanted vibrations and jerking during acceleration and gear changes,
• adaptation to the characteristics of a high-revving petrol engine.

Thanks to its factory design, the shaft works with the automatic gearbox control system, supporting smooth gear shifting and predictable vehicle behavior during dynamic driving.

Vehicle application and benefits of installation

Installing an original drive shaft in an Audi R8 Mk1 allows for restoring the proper operation of the drivetrain in the event of wear or damage to the existing component. This is particularly important in high-power cars, where the precision and durability of drivetrain components have a direct impact on safety and driving comfort.

• reduction of noise and vibrations originating from the drivetrain,
• maintaining the proper characteristics of the Quattro drive,
• maintaining factory acceleration parameters and throttle response.

Choosing an original component from the Cardan Joints category is a beneficial solution for users who expect consistency with factory specifications and want to avoid problems resulting from the use of unsuitable replacements.

Condition, origin, and practical aspects

The offered drive shaft is a used component, which allows for lower repair costs while maintaining a design consistent with Audi's manufacturer solutions. Such components are particularly sought after for sports models, where the availability of new parts can be limited or involve high costs.

Before installation, standard verification at a specialized service center is recommended, including checking for play, the condition of the joints, and any potential mechanical damage. A properly selected and installed drive shaft supports trouble-free operation of the drivetrain and reduces the risk of secondary damage to other components.

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Audi and need other elements from the same group, such as intermediate shafts, joints, or connecting elements, check the available parts in the Audi Cardan Joints category.

For a broader perspective on selecting original, used components for popular car models and a comparison of the most frequently chosen solutions, it is worth reading our guide: The best used car parts – a guide to the most frequently chosen original parts.