BMW G11 G12 LCI 730i G32 630i B48D Automatic Gearbox GA8HP51Z 9485370 WARRANTY

Listing details

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

BMW G11 G12 LCI 730i G32 630i B48D Automatic Gearbox GA8HP51Z is a factory-original automatic transmission designed for the luxury 7 Series and 6 Series Gran Turismo models. A used gearbox from this group ensures the preservation of the original drivetrain characteristics, which translates into smooth gear shifting, proper dynamics, and driving comfort consistent with BMW standards. This is a solution for users who want to restore full drivetrain performance while maintaining the original design of the vehicle.

Specifications and technical data

• SKU: 9485370
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9485370
• Substitutable numbers: 9485370, 24009485370, 8742146, 24008742146, 9455265, 24009455265, 5A908F5, 24005A908F5
• Gearbox type: Automatic
• Category: Automatic Transmission

Purpose and technical specifications

The presented gearbox belongs to the Automatic transmissions group for BMW and is structurally matched to the B48D unit in G11, G12 LCI, and G32 models. The automatic transmission type ensures compatibility with factory drivetrain control systems, allowing for the maintenance of manufacturer-intended shift strategies, load response, and operating refinement.

The automatic transmission design was engineered with the engine's high torque and the weight of a luxury-class vehicle in mind, ensuring the gearbox handles typical operational loads in premium segment cars well. Using an original unit avoids issues with fitting accessories, controller software, and mounting components.

Benefits of using an original BMW automatic transmission

Using this gearbox in the 7 Series G11/G12 LCI and G32 B48D allows for maintaining the consistency of the entire drivetrain. Key advantages include:

• Factory compatibility with the vehicle's drivetrain and electronics, without the need for structural modifications.
• Properly selected gear ratios, supporting both relaxed highway cruising and dynamic acceleration.
• Ability to utilize factory driving modes, such as comfort and more dynamic drivetrain settings.
• Seamless cooperation with safety systems and driver assistants that rely on data from the automatic transmission.

For the user, this means predictable vehicle behavior, no integration issues, and the preservation of the driving character typical of a high-class BMW.

Condition, origin, and practical application

The offered gearbox comes from a BMW vehicle and is a used component, which allows for a significant reduction in repair costs compared to purchasing a new transmission. At the same time, the original design is preserved, allowing installation to be carried out in a factory-like manner, using standard mounting points and factory accessories.

The automatic transmission type is particularly important in premium-class vehicles, where comfort, smoothness, and proper cooperation with the engine control system are paramount. Replacing a damaged gearbox with an original unit of the same type allows for restoring proper drivetrain operation without the need for interfering with vehicle software or changing the system configuration.

Selection, replacement numbers, and technical support

This automatic gearbox has an assigned OEM part number and a set of interchangeable numbers, which facilitates precise identification and selection for a specific vehicle configuration. Before purchasing, it is recommended to compare the transmission markings with the vehicle data to confirm full compatibility with the engine version, model year, and installed equipment.

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 torque converters, control elements, or additional transmission parts, check the available parts in the BMW Automatic Transmissions category.

Operating a used automatic gearbox and additional information

When choosing a used automatic transmission, it is crucial to pay attention to structural compatibility, the donor vehicle's service history, and correct installation by the workshop. Proper filling with the correct oil, system bleeding, and adaptation in the controller (if required) have a direct impact on the durability and refinement of the gearbox.

To better assess when purchasing a used gearbox is cost-effective and what to look for during installation and selection, it is worth reading the guide article "Used gearbox – when is it worth it and what you need to remember", which discusses the differences between manual and automatic transmissions as well as compatibility issues.

Additional information on comparing new and used parts, their durability, and economic aspects is also provided in the material "Car parts – new or used? We compare costs, quality, and durability", which is helpful when planning broader repairs within the drivetrain.