BMW X5 E70 LCI X6 E71 M50dX Automatic Gearbox GA8HP70Z - X2A 7644021 WARRANTY

Listing details

The gearboxes are sold with a 90-day warranty! They were tested before removal and are in full working order. BMW X5 E70 LCI X6 E71 M50dX Automatic Gearbox GA8HP70Z - X2A is a factory-original, used automatic transmission from the Automatic gearboxes group, designed for advanced BMW models with xDrive. This is a solution for users expecting precise transmission operation, high gear-shifting quality, and the preservation of the original drivetrain characteristics in premium-class vehicles.

Specifications and technical data

• SKU: 7644021
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7644021
• Substitutable numbers: 24007644021, 7644021, 24007642981, 24007642982
• Gearbox type: Automatic
• Part type: Automatic Transmission
• Category: Automatic Transmission

Purpose and technical specifications

The presented automatic transmission has been designed to work with BMW powertrains in X5 E70 LCI and X6 E71 models in the M50dX version, where high durability and stable torque transfer to the xDrive system are required. The transmission design ensures smooth, sequential gear shifting and efficient gear management across the full load range, both in highway driving and urban conditions. As an item from the Automatic gearboxes category, this transmission is optimized for compatibility with factory BMW control units, traction control systems, and safety systems, which allows for consistent operation of the entire drivetrain.

Benefits of using an original BMW automatic transmission

Using an original automatic transmission in a BMW X5 E70 LCI or X6 E71 M50dX allows you to maintain factory drivetrain performance parameters and predictable vehicle behavior in various driving modes. Key advantages of this solution include:

• Consistency with factory configuration – maintaining original shift points and acceleration characteristics.
• Compatibility with the vehicle's electronic systems, including the all-wheel-drive system.
• Possibility of professional remanufacturing or servicing at specialized workshops dealing with BMW transmissions.
• Stable operation under high loads typical for powerful diesel engines. For users expecting predictable vehicle behavior and easier diagnostics, choosing an original transmission from this series is a technically safe and long-term cost-effective solution.

Condition, selection, and installation aspects

The offered transmission comes from the used BMW OEM components segment, which means it is a part sourced from dismantling, intended for further use after proper installation and any necessary preparatory service. Before installation, standard workshop procedures are recommended, such as checking seals, changing transmission fluid according to the manufacturer's recommendations, and verifying compatibility with the specific engine version and vehicle model year. To select the correct transmission for a specific BMW vehicle, it is worth using the manufacturer's markings, the OEM number, and interchangeable numbers, as well as vehicle data (VIN). This helps avoid issues with matching the housing, gear ratios, or control software and ensures proper cooperation with the existing electrical installation.

Automatic transmission – operation and technical knowledge

Automatic transmissions require conscious operation, regular oil changes, and monitoring of operating parameters to maintain long-term stability. In the case of purchasing a used transmission, it is particularly important to properly bleed the system, use the correct oil, and perform a transmission adaptation after installation, if required by the service procedure for the given BMW model. If you want to deepen your knowledge about the differences between manual, automatic, and DSG transmissions, typical faults, and the principles of safely purchasing a used transmission, read the article: Transmission: manual, automatic, or DSG – typical faults and a guide to buying a used gearbox. It is a practical source of information that will help you better assess the technical condition and consciously plan service. Additionally, if you are interested in the broader context of the cost-effectiveness of purchasing used drivetrain components, selection procedures based on OEM numbers, and real cost differences compared to new parts, it is worth reading the guide: Why it is worth buying used transmissions and engines – facts instead of myths.

Expanding the drivetrain in BMW – the same group of components

If you are planning a comprehensive repair or upgrade of the drivetrain area in your BMW and need other elements from the same group, such as torque converters, other automatic transmissions, or additional control components, check the available parts in the BMW automatic gearboxes category.

Summary

BMW X5 E70 LCI X6 E71 M50dX Automatic Gearbox GA8HP70Z - X2A is a proposal for drivers who want to maintain the original drivetrain performance in their BMW SUVs while taking advantage of the potential of a used OEM part. A properly selected and installed transmission will ensure smooth gear shifting, predictable vehicle behavior, and full integration with factory electronic systems, providing a solid foundation for further, conscious vehicle operation.