Audi A8 D4 4H 3.0 TDI CTBA Quattro Automatic Gearbox NWJ 0BK300038N WARRANTY

Listing details

The gearboxes are sold with a 90-day warranty! They were tested before removal and are in full working order.

Audi A8 D4 4H 3.0 TDI CTBA Quattro Automatic Gearbox NWJ is a factory-original automatic transmission from the Automatic gearboxes group, designed for diesel units with the quattro system. This used OEM component is a solution for drivers who expect to maintain the original driving characteristics while optimizing repair costs. Thanks to its structural compatibility with the all-wheel-drive system, the gearbox allows for the restoration of proper drivetrain operation without interfering with the vehicle's factory architecture.

Specifications and technical data

• SKU: 0BK300038N
• Mark: Audi
• Condition: Used
• OEM Part Number: 0BK300038N
• Substitutable numbers: 0BK300038N, 0BK 300 038 N
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: Automatic Transmission

Purpose and technical characteristics

The presented automatic gearbox has been designed to work with the diesel engine in the Audi A8 D4 4H model with the CTBA Quattro drive. Using an original transmission ensures the preservation of factory shift points, proper matching to the torque of the 3.0 TDI unit, and correct cooperation with the vehicle's electronic control systems.

The automatic transmission type guarantees smooth gear shifting, which translates into driving comfort in both city traffic and on the highway. The OEM design is prepared to work with advanced safety and comfort systems typical of the Audi luxury sedan segment.

Benefits of using an original automatic gearbox

Using an original gearbox from the same family as the one factory-installed in the Audi A8 D4 4H reduces the risk of mechanical and electronic compatibility issues. This is particularly important in the case of the quattro drive, where the transmission works in conjunction with the all-wheel-drive system and traction control systems.

• preservation of factory drivetrain characteristics and shift quality,
• consistency with engine control unit software and comfort modules,
• possibility of using the existing installation architecture without costly modifications,
• cost-effective solution compared to purchasing a new transmission.

For many users, it is crucial that a used automatic gearbox allows for the restoration of full vehicle functionality while maintaining a reasonable service budget, especially in the case of advanced all-wheel-drive designs.

Selection, installation, and compatibility

Before installation, it is recommended to verify the compatibility of the gearbox with the specific vehicle configuration, including the diesel engine type, the quattro drive version, and the controller used. Proper selection of the transmission minimizes the risk of communication errors in the vehicle network and problems with gearbox adaptation after installation.

Professional installation includes, among other things, checking the condition of accessories, replacing the operating fluid according to the manufacturer's recommendations, and performing adaptation procedures using a diagnostic tester. This approach allows for fully utilizing the component's potential and ensuring stable operation of the drivetrain.

Used gearbox – when is it worth it?

In the event of a transmission failure in an Audi A8 D4 4H, many users consider whether regeneration or purchasing a used component is the better solution. With automatic gearboxes, cost differences can be significant, and the decision depends on the condition of the current unit, the availability of parts, and the budget. To consciously compare these options, it is worth checking the guide: Used gearbox – when is it worth it and what you need to remember, where issues such as compatibility, differences between manual and automatic gearboxes, and the cost-effectiveness of individual solutions are discussed.

Expansion and service of the Audi drivetrain

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 a torque converter, control elements, or additional transmission components, check the available parts in the Audi automatic gearboxes category.