Audi A6 C6 4F 3.0 TDI Quattro Rear Axle Differential HNL 0AR500043A WARRANTY

Listing details

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

Audi A6 C6 4F 3.0 TDI Quattro Rear Axle Differential HNL is an original drivetrain component designed for installation on the rear axle of the quattro drive system. Thanks to its factory-engineered Audi design, it ensures proper torque distribution and stable vehicle handling in various road conditions. This used rear differential is an excellent choice for professional drivetrain repairs when you want to maintain the factory performance characteristics.

Specifications and technical data

• SKU: 0AR500043A
• Mark: Audi
• Condition: Used
• OEM Part Number: 0AR500043A
• Substitutable numbers: 0AR500043A, 0AR 500 043 A
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function of the rear differential

The presented rear differential is a drivetrain component responsible for transferring power to the rear wheels and compensating for the rotational speed difference between them. In the Audi A6 C6 4F 3.0 TDI Quattro model, it works in conjunction with the central quattro system, ensuring predictable vehicle behavior during acceleration, engine braking, and cornering.

The placement on the vehicle specified as Rear means that the differential works directly with the rear half-shafts, influencing:

• driving stability at higher speeds,
• traction on slippery surfaces,
• even load distribution on drivetrain components.

Benefits of using an original rear differential

Using an original differential in the Audi A6 C6 4F 3.0 TDI Quattro allows you to maintain factory drivetrain performance parameters, which is particularly important in all-wheel-drive vehicles. This component ensures:

• structural compatibility with the factory suspension and drivetrain system,
• proper cooperation with other quattro components,
• appropriate torque transfer characteristics to the rear axle.

As a result, the vehicle maintains predictable, neutral handling, and the drivetrain is not subjected to additional stress resulting from the use of improper components.

Product characteristics and condition

The offered item comes from the Differentials group and is dedicated to the Audi brand. As a used part, the differential is an economical solution while maintaining the manufacturer's original specifications. This type of component is particularly useful for:

• repairs following mechanical damage to the rear differential,
• eliminating noise resulting from excessive gear wear,
• restoring proper quattro drive operation after a failure.

The condition specified as Used allows you to choose the appropriate installation strategy and any further maintenance, such as changing the gear oil after installation in the vehicle.

Matching by numbers and technical support

The Audi A6 C6 4F 3.0 TDI Quattro rear differential has a dedicated OEM part number and assigned interchangeable numbers, which facilitates precise identification and selection for a specific vehicle configuration. In practice, this means the ability to verify compatibility using manufacturer catalogs or the VIN, which minimizes the risk of purchasing an incompatible part.

If you want to better understand gear ratio selection and the compatibility of drive axles with a specific driving style, it is worth checking out our expert guide: Dismantled drive axles and differentials – how to choose gear ratios for your driving style. You will find practical tips on differential configuration, application examples, and answers to frequently asked questions.

Expanding your Audi drivetrain repair

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 rear differentials, drive axles, or gearboxes, check out the available parts in the Audi Differentials category.

For larger service projects, including the transmission or engine unit, you may also find our guide helpful, which explains when purchasing used components is technically justified and how to properly select them by part numbers and VIN: Why it is worth buying used transmissions and engines – facts instead of myths.