Automatic Gearbox BMW X3 G01 X4 G02 30dX B57 GA8HP75X 8740643 WARRANTY

Listing details

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

Automatic Gearbox BMW X3 G01 X4 G02 30dX B57 GA8HP75X is an original, factory-spec transmission from the BMW range, designed for X3 G01 and X4 G02 models equipped with the 30dX B57 engine. The automatic design ensures smooth gear shifts, high drivetrain refinement, and stable torque transfer during daily operation.

Specifications and technical data

• SKU: 8740643
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8740643
• Substitutable numbers: 8740643, 24008740643, 8744942, 24008744942, 7953201, 24007953201, 8699198, 24008699198
• Gearbox type: Automatic
• Category: Automatic Transmission

Purpose and compatibility

The presented gearbox belongs to the Automatic Gearbox group by BMW and has been designed to work with the 30dX B57 unit in X3 G01 and X4 G02 models. This ensures that factory mounting points, correct geometry, and compatibility with original vehicle equipment are maintained, facilitating installation and integration with the existing system.

Thanks to the use of an Automatic transmission, the drivetrain retains the characteristics intended by the manufacturer – from starting and accelerating to highway driving. This solution is dedicated to drivers who expect comfort, predictable throttle response, and stable interaction with the vehicle's electronic systems.

Technical characteristics of the automatic gearbox

The automatic design of this gearbox provides:

• smooth gear shifting without jerking,
• consistent cooperation with BMW drivetrain control systems,
• gear ratios properly matched to the 30dX B57 engine,
• stable torque transfer across a wide range of loads.

As an OEM component, the gearbox maintains factory operating parameters, which translates into predictable vehicle behavior and the ability to use original service procedures. The Automatic gearbox type promotes comfortable driving in the city and on long routes, reducing driver fatigue and improving driving smoothness.

Condition, origin, and benefits of choosing a used gearbox

The offered gearbox comes from the used BMW components segment, which allows for a significant reduction in repair costs compared to purchasing a new transmission. This solution is particularly beneficial in the event of major drivetrain failures, where replacing the entire gearbox is more cost-effective than a multi-stage regeneration of a damaged unit.

Choosing a used automatic gearbox makes sense especially when you want to maintain the original vehicle specification while optimizing your repair budget. If you want to better understand when such a purchase is most rational and what to look for when selecting a transmission, read the article Used gearbox – when is it worth it and what you need to remember.

Practical application and installation recommendations

The gearbox has been designed to work with the factory BMW control system, therefore, with proper installation, it is possible to maintain full functionality of vehicle systems, such as driving modes or adaptive gear-shifting strategies. It is recommended that the installation be carried out by a specialized workshop that will ensure:

• proper seating of the gearbox in the vehicle,
• correct filling and bleeding of the oil system,
• execution of adaptation procedures in accordance with BMW guidelines,
• verification of tightness and correctness of electrical connections.

Such an approach minimizes the risk of subsequent operational problems and allows you to fully utilize the potential of the automatic transmission in daily driving.

BMW automatic gearboxes – expansion and modernization

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

When considering the use of used drivetrain components, it is also worth looking at the topic from an economic and ecological perspective – you can find more on this in the guide Circular economy in your garage – how choosing used parts from dismantling really supports environmental protection and your wallet?.