BMW X3 F25 F30 F31 330dX N57N Automatic Auto Gearbox GA8HP70X 7643203 WARRANTY

Listing details

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

BMW X3 F25 F30 F31 330dX N57N Automatic Auto Gearbox GA8HP70X is a factory-original, used transmission from the Automatic gearboxes segment, designed for BMW F25 and F30 series models. The design of this gearbox ensures smooth gear shifting, high operating refinement, and stable torque transfer, which translates into a comfortable and predictable driving experience.

Specifications and technical data

• SKU: 7643203
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7643203
• Substitutable numbers: 24007643203, 7643203, 24007644217, 7644217
• Gearbox type: Automatic
• Category: Automatic Transmission

Technical characteristics and intended use

The GA8HP70X automatic gearbox belongs to the modern torque converter transmissions used in BMW vehicles, designed for efficient engine power utilization and reduced drivetrain losses. The applied automatic gear-shifting technology enables dynamic acceleration while maintaining low RPMs during steady-speed driving.

In BMW F25 and F30 vehicles, this gearbox works in conjunction with the vehicle's electronic systems, ensuring precise gear adjustment to the driving mode, load, and road conditions. As a result, the driver receives consistent, predictable drivetrain behavior, which is particularly important for daily use and long-distance travel.

Benefits of using the GA8HP70X automatic gearbox

Using this transmission in a BMW F25 or F30 allows for maintaining the original drivetrain characteristics, in accordance with the manufacturer's specifications. Key advantages include:

• Smooth gear shifting – reduction of jerking and interruptions in torque delivery.
• Driving comfort – automatic adjustment of gears to the driving style, without the need for manual shifting.
• Stable power transmission – appropriate transmission design adapted to the parameters of BMW power units.
• Integration with vehicle systems – cooperation with control electronics, which facilitates diagnostics and configuration.

For the user, this means predictable vehicle behavior, less fatigue during city driving, and better utilization of the engine's potential on longer routes.

Selection, installation, and service aspects

When selecting the GA8HP70X gearbox for a BMW F25 or F30, it is crucial to verify compatibility with the specific engine version and vehicle model year, as well as matching it with the existing control electronics. The product has a dedicated OEM part number and associated interchangeable numbers, which facilitates clear identification and minimizes the risk of ordering errors.

Installation in a specialized workshop is recommended, as they possess the appropriate equipment for servicing automatic transmissions, including filling and bleeding the oil system and performing gearbox adaptation after installation. Properly performed installation and configuration of the transmission have a direct impact on the durability of the component and the correct operation of all driving modes.

Practical application and technical support

The GA8HP70X automatic gearbox is particularly valued by BMW users for its combination of comfort and drivetrain efficiency, which performs well in both city traffic and on the highway. When purchasing a used transmission, it is worth knowing the typical signs of wear and inspection procedures that help assess its condition before installation. Practical tips regarding the differences between manual, automatic, and DSG gearboxes, as well as a guide to buying a used transmission, can be found in the article: Gearbox: manual, automatic, or DSG – common faults and a guide to buying a used transmission.

Expanding repairs within the drivetrain system

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