Audi R8 42 4.2 FSI Quattro Front Axle Differential Diff 0AZ409505A WARRANTY

Listing details

The differential is sold with a 90-day warranty! It was tested before removal and is in full working order.

Audi R8 42 4.2 FSI Quattro Front Axle Differential Diff is a drivetrain component designed for the front axle, engineered for the Quattro all-wheel-drive system. It offers precise torque distribution between the front wheels, which translates into stable handling and predictable vehicle behavior. This is a solution for users who expect consistent drivetrain operation, proper traction, and compatibility with the factory design.

Specifications and technical data

• SKU: 0AZ409505A
• Mark: Audi
• Condition: Used
• OEM Part Number: 0AZ409505A
• Substitutable numbers: 0AZ409505A, 0AZ 409 505 A
• Location on the vehicle: Front
• Category: Differentials

Purpose and function in the drivetrain

The presented differential belongs to the Differentials category and operates in the front part of the drivetrain. Its task is to distribute power to the front wheels in a manner adapted to traction conditions, which is important both during dynamic driving and in everyday use.

Its placement on the vehicle in the front zone allows it to work with the Quattro system, ensuring:

• proper torque transfer to the front axle,
• stable vehicle behavior during acceleration and engine braking,
• better control over the car on surfaces with varying grip.

Technical characteristics and fitment

The differential was developed by the Audi brand as a drivetrain component compatible with the 4.2 FSI engine and all-wheel-drive system. The design is adapted for operation in the front axle, which is crucial when selecting a component for a specific vehicle configuration.

The item has a dedicated OEM part number and interchangeable numbers, which facilitates verification of compatibility with a specific version of the Audi R8. This allows for precise matching of the differential to the existing drivetrain, minimizing the risk of installation and operational issues.

Condition, origin, and practical application

The offered differential is a used component, which allows for economical drivetrain repair while maintaining the original design. This type of component is particularly useful for:

• repairs after mechanical damage to the front axle,
• restoring the efficiency of the Quattro drive after a failure,
• comprehensive drivetrain rebuilding in an Audi R8.

Choosing a used differential from disassembly allows for maintaining consistency with the manufacturer's factory solutions, which is essential in high-performance vehicles.

Benefits of using an original differential

Using an original differential in the front axle brings a number of practical benefits:

• Compatibility with the drivetrain – matched to the specific version of the Audi R8 4.2 FSI Quattro.
• Consistent operation with other drivetrain elements, such as shafts and half-shafts.
• The ability to maintain factory traction and vehicle stability parameters.

For users who expect predictable car behavior and want to maintain a configuration close to the factory one, such a differential is a rational service choice.

Differential selection and technical support

When selecting a differential for a specific Audi R8 unit, it is crucial to pay attention to the OEM part number, interchangeable numbers, and placement on the vehicle. This helps avoid gear ratio mismatches and installation problems.

To better understand the relationships between gear ratios, axle design, and driving style, it is worth checking out our guide: Dismantled drive axles and differentials – how to choose gear ratios for your driving style. The article discusses definitions, gear ratio selection, component compatibility, and practical examples of using used and remanufactured subassemblies.

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 front axles, differentials, or related power distribution components, check out the available parts in the Audi Differentials category.