Automatic Gearbox BMW F30 320d N47N Auto GA8HP45Z 7642244 7640096 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 F30 320d N47N Auto GA8HP45Z is a factory-spec transmission assembly designed for the N47N diesel unit, ensuring smooth, predictable, and comfortable gear shifts. Thanks to the precise design of the automatic transmission and its calibration to the characteristics of the diesel engine, the gearbox supports dynamic acceleration, stable highway driving, and fuel efficiency. This is a solution for users who expect proven, original BMW technology in an automatic configuration.

Specifications and technical data

• SKU: 7642244
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7642244
• Substitutable numbers: 7642244, 24007642244, 7640096, 24007640096
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: Other Transmission & Drivetrain

Purpose and compatibility with the N47N unit

The presented automatic gearbox has been designed to work with the BMW 320d N47N engine in the F30 body, which means full compatibility in terms of torque characteristics, shift maps, and control logic. The use of the GA8HP45Z transmission allows for the effective utilization of the diesel unit's potential, both in daily city driving and during longer trips.

The automatic transmission was built to operate with diesel fuel, which is why the gear ratios and hydrodynamic control are adapted to the high torque available in the low and medium RPM ranges. In practice, this translates into stable starting, predictable downshifts, and reduced jerking during gear changes.

Operating characteristics of the GA8HP45Z automatic gearbox

The automatic gearbox in this model was developed as an optimized performance design, combining ease of use with good responsiveness to driver input. The control system selects gears in a way that:

• maintains the engine in the optimal RPM range for the diesel unit,
• limits unnecessary downshifts during calm driving,
• ensures faster throttle response during dynamic acceleration.

As a result, the gearbox performs well both in calm, economical driving modes and in situations requiring efficient overtaking. Using an automatic transmission relieves the driver in city traffic while maintaining consistent, predictable drivetrain behavior.

Benefits of using an original BMW gearbox

Choosing an original automatic gearbox for the BMW F30 320d N47N primarily ensures the preservation of factory drivetrain performance parameters. Proper gear ratios, matched control software, and correct interaction with the vehicle's electronics minimize the risk of malfunctions, controller errors, or unwanted vibrations.

Key advantages of this configuration include:

• consistency with the factory BMW diagnostic system,
• preservation of the gear-shifting characteristics intended by the manufacturer,
• easier integration with the existing electrical harness and control modules.

The used component allows for the optimization of repair or upgrade costs while maintaining the original design and logic of the drivetrain.

Application in service and upgrade practice

The GA8HP45Z automatic gearbox for the BMW F30 320d N47N is often chosen in cases of major failures of the existing transmission, where repairing the current component is uneconomical or technically difficult. Using a complete, used gearbox allows for the restoration of full vehicle functionality while maintaining compliance with factory parameters.

In practice, the installation of such a gearbox requires standard service procedures, such as proper system bleeding, the use of the correct transmission fluid, and performing adaptations and diagnostic procedures within the BMW system. A correctly performed installation allows for stable, consistent automatic operation without unwanted delays or jerking.

Related components and technical knowledge development

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 transmissions, control sub-assemblies, or mounting elements, check the available parts in the Other BMW category.

To compare solutions used by different manufacturers regarding engines, transmissions, and drivetrain systems, it is worth reading the analysis of high-performance model designs – a detailed discussion of the differences in powertrains, brakes, and chassis can be found in the article Audi RS vs other models – what is hidden under the hood and chassis?.