Automatic Gearbox BMW F20 F30 F31 LCI 120d 320d B47 8678661 GA8HP50Z 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 F20 F30 F31 LCI 120d 320d B47 GA8HP50Z is a factory-original, used transmission from the Automatic gearboxes segment, designed for modern BMW diesel units. The design of this gearbox was engineered for smooth gear shifting, high operating refinement, and efficient use of the diesel engine's torque. It is a solution for users expecting proven, original BMW technology at a reasonable budget.

Specifications and technical data

• SKU: 8678661
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8678661
• Substitutable numbers: 8678661, 24008678661
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: Automatic Transmission

Purpose and technical characteristics

The presented automatic gearbox is dedicated to BMW 1 Series F20 and 3 Series F30/F31 LCI (facelift) models with the B47 engine, powered by Diesel fuel. The GA8HP50Z automatic transmission used belongs to modern designs with optimized gear ratios, which translates into dynamic acceleration, stable engine RPM, and comfortable driving in both urban and highway conditions.

Automatic gear shifting ensures precise adjustment of ratios to the load and driving style, and proper calibration for the B47 unit allows for effective utilization of the diesel engine's potential. The gearbox is prepared to work with factory BMW control systems, which facilitates integration with the vehicle's electronics.

Benefits of using the GA8HP50Z automatic gearbox

Using this transmission in a BMW F20 or F30/F31 with a diesel engine brings a number of practical benefits:

• High operating refinement – smooth gear shifting reduces jerking and improves driving comfort.
• Fuel consumption optimization – properly selected gear ratios promote economical operation of the diesel unit.
• Stable cooperation with the B47 engine – the gearbox is designed to be linked with this type of unit, which minimizes the risk of compatibility issues.
• Adequate durability – the construction is intended to handle loads typical for the 120d and 320d versions.

Application in service practice

A used BMW automatic gearbox of this type is often chosen as a solution for major failures of the factory transmission when repair proves unprofitable. By maintaining the original BMW specification, it is possible to preserve the factory performance parameters of the drivetrain and the correct operation of auxiliary systems, such as traction control or driving modes.

For workshops and users, it is important that the transmission comes from the Automatic gearboxes group, which facilitates the selection of appropriate installation procedures, transmission fluid, and adaptation in the controller. Before installation, standard service operations are recommended, such as checking seals, changing the oil and filter, and performing gearbox adaptation using appropriate diagnostic software.

Condition, origin, and cost-effectiveness

The offered gearbox is a used item, which allows for a significant reduction in repair costs compared to purchasing a brand-new transmission. For many BMW F20/F30/F31 series users, this is a reasonable compromise between price and maintaining the manufacturer's original technology. A used OEM automatic gearbox, selected according to the model and fuel type designation, allows for the restoration of full vehicle functionality at controlled service costs.

If you want to better assess when choosing a used transmission makes sense and what to pay attention to during installation and selection, it is worth reading the guide: Used gearbox – when is it worth it and what you need to remember. The article discusses the differences between manual and automatic gearboxes, compatibility issues, and compares purchasing a used part with remanufacturing.

Additional information and related items

When planning a larger scope of work on a BMW drivetrain, it is important to consider not only the transmission itself but also the availability of other components from the same group, such as the torque converter, control elements, or mounting hardware. Quick access to used OEM parts can significantly shorten the vehicle's downtime in the workshop – you can find more on this in the article how the availability of used OEM parts off-the-shelf affects repair time and service costs.

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 other automatic transmissions, related torque converters, or compatible control modules, check the available parts in the BMW automatic gearboxes category.