Audi A8 D4 4.2 TDI Quattro MXX Gearbox Oil Pump Unit 0BL300035JX

Audi A8 D4 4.2 TDI Quattro MXX Gearbox Oil Pump Unit is an original component from the Automatic transmission parts group, designed for the drivetrain in Audi models with quattro all-wheel drive. This used oil pump ensures the proper circulation of the working medium within the automatic transmission, which translates into stable gearbox operation and predictable vehicle behavior. It is a solution for users seeking a factory-spec component with a proven design, tailored to the specifics of the 4.2 TDI unit.

Specifications and technical data

• SKU: 0BL300035JX-2
• Mark: Audi
• Condition: Used
• OEM Part Number: 0BL300035JX
• Substitutable numbers: 0BL300035JX, 0BL 300 035 JX, 1091342045, 1091410011
• Gearbox type: Automatic
• Category: Automatic Transmission Parts

Purpose and function in the drivetrain

The gearbox oil pump in the Audi A8 D4 4.2 TDI Quattro is responsible for maintaining the correct pressure and continuous lubrication of the automatic transmission components. In practice, this means:

• stable gear engagement under various engine loads,
• reduction of friction within planetary gears and clutches,
• support for the transmission's hydraulic control system,
• reduction of the risk of internal component overheating.

Thanks to its adaptation to the specific quattro drivetrain configuration, the pump works with the torque transmission system in accordance with the manufacturer's specifications, which is crucial for maintaining the performance characteristics of the Audi luxury sedan.

Compatibility with the automatic transmission

The presented pump has been designed to work with the automatic transmission used in the Audi A8 D4 4.2 TDI Quattro. The design accounts for requirements regarding:

• hydraulic efficiency at the high torque of the 4.2 TDI unit,
• oil pressure stability across a wide range of operating temperatures,
• integration with the factory transmission control system.

Selecting a used component from the same design family allows for maintaining the consistency of transmission operating parameters, which is particularly important for the precisely tuned automatic transmissions used in the premium segment.

Characteristics of the used component

The gearbox oil pump comes from disassembly, which allows for an economical restoration of the drivetrain's efficiency without sacrificing the original Audi design. A used component is a good solution in situations where:

• a quick replacement of a damaged pump is necessary while maintaining factory specifications,
• a favorable cost-to-functionality ratio is important,
• components from the same production line as those originally installed in the vehicle are preferred.

Using an original pump from this series reduces the risk of fitment issues and facilitates the work of the service center responsible for maintaining the automatic transmission.

Benefits of using an original Audi pump

Choosing an original Audi gearbox oil pump allows you to maintain transmission operating parameters in line with the manufacturer's design. Key advantages include:

• factory fitment to the transmission housing and oil channels,
• preservation of the gear-shifting characteristics intended for the 4.2 TDI unit,
• consistency with the software controlling the automatic transmission.

For users who value comfort, smooth gear shifting, and predictable drivetrain response, using a component from the same design family is an essential element of long-term vehicle operation.

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 valve bodies, hydraulic components, or additional transmission-related modules, check the available parts in the Audi automatic transmission parts category.

For drivers who are also considering optimizing maintenance costs for other VAG group cars, practical tips regarding the used and replacement parts market may be useful – you can find them in the article Repairing a Volkswagen on a budget? Discover how to save on original car parts.