Audi A8 4H 3.0 TDI Quattro Rear Axle Differential Diff NPR 0BC500044D WARRANTY

Listing details

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

Audi A8 4H 3.0 TDI Quattro Rear Axle Differential Diff NPR is an original drivetrain component from the Differentials category, designed for installation on the rear axle of Audi models with quattro all-wheel drive. This used differential allows for a technically sound repair of the drivetrain while maintaining factory performance characteristics and cost-effective maintenance.

Specifications and technical data

• SKU: 0BC500044D
• Mark: Audi
• Condition: Used
• OEM Part Number: 0BC500044D
• Substitutable numbers: 0BC500044D, 0BC 500 044 D
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function in the drivetrain

The presented rear differential is responsible for distributing torque to the rear axle wheels in the quattro system, which is crucial for traction, stability, and predictable vehicle handling. Mounted in the rear of the vehicle, it works in conjunction with the driveshaft and half-shafts, ensuring smooth power transmission at varying wheel speeds.

Thanks to its design, which complies with Audi's factory standards, the differential maintains the correct operating characteristics for the 3.0 TDI engine, both during highway driving and in urban conditions or on slippery surfaces.

Application in Audi A8 4H 3.0 TDI Quattro

The differential is designed to work with the drivetrain of the Audi A8 4H generation with a 3.0 TDI engine and all-wheel drive. Proper fitment to the rear axle geometry and suspension system ensures the correct mounting position and seamless integration with other drivetrain components.

Replacing a worn or damaged differential with an original used part is a solution that restores the proper operation of the quattro system, reduces noise and vibration, and minimizes the risk of further damage to the drivetrain.

Benefits of using an original differential

Using a factory rear differential in the Audi A8 4H 3.0 TDI Quattro ensures:

• maintenance of proper torque distribution on the rear axle,
• consistency with factory drivetrain settings and electronic assistance systems,
• correct fitment to mounting points and suspension components,
• installation without the need for vehicle structural modifications.

For workshops and users, this means predictable installation time, reduced risk of compatibility issues, and easier diagnostics of potential future faults.

Differential selection and technical compatibility

To correctly select a differential for a specific version of the Audi A8 4H, it is worth verifying compatibility using the OEM number and vehicle data. A detailed guide on selecting drive axles and differentials may be helpful – you can find it in the article Dismantled drive axles and differentials – how to choose gear ratios for your driving style, which discusses gear ratios, compatibility, and practical application examples.

When selecting parts, it is also useful to use the OEM number and the vehicle's VIN. Practical step-by-step tips on how to safely select a used part can be found in the material Guide: how to choose the right car part by VIN and OEM number, which will facilitate compatibility verification before installation.

Related Audi Differentials

If you are planning a comprehensive repair or upgrade of your Audi's drivetrain and need other components from the same group, such as other differentials, drive axles, or gear units, check out the available parts in the Audi Differentials category.