Automatic Gearbox BMW G20 G21 X3 G01 X4 G02 M40dX GA8HP76X 5A05D99 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 G20 G21 X3 G01 X4 G02 M40dX GA8HP76X is a factory-original, used automatic transmission designed for modern BMW diesel models. The design of this gearbox is engineered for efficient high torque transfer and comfortable, smooth gear shifting during both daily and dynamic driving. This solution is intended for users who expect to maintain the original performance characteristics of the drivetrain in their G20, G21, and X3 G01 M40dX series vehicles.

Specifications and technical data

• SKU: 5A05D99
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 5A05D99
• Substitutable numbers: 5A05D99, 24005A05D99, 9894320, 24009894320, 9452685, 24009452685
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: Automatic Transmission

Purpose and technical characteristics

The presented automatic transmission belongs to the Automatic Gearboxes category and is dedicated to BMW vehicles with diesel engines. It has been configured to work with diesel units, which means properly selected gear ratios and control software, ensuring the correct utilization of the engine's torque characteristics.

The transmission is an automatic design, which translates into convenience in city traffic and on the road, as well as stable, repeatable drivetrain performance. The applied solutions allow for precise gear selection, reduction of jerking, and maintenance of optimal engine RPM across a wide speed range.

Application in BMW G20, G21 and X3 G01 M40dX models

This gearbox was developed for the new generation of BMW 3 Series (G20, G21) and BMW X3 G01 in the M40dX version, where a transmission capable of handling high loads while maintaining comfort and refinement is required. Thanks to its factory origin, consistency with the vehicle's original settings is maintained, which facilitates integration with existing electronics and driver assistance systems.

In practice, this means:

• proper matching of gear shifting characteristics to the diesel engine,
• maintaining the acceleration dynamics intended by the manufacturer,
• consistency with factory driving modes (comfort, sport, eco – depending on the vehicle configuration).

Benefits of choosing a used automatic gearbox

Choosing a used automatic transmission for a BMW is a solution that allows for significant cost savings compared to purchasing a brand-new component, while maintaining the original specification. This type of part is particularly attractive in the event of a failure of the existing gearbox, when the priority is a quick return of the vehicle to full efficiency within a reasonable budget.

The main advantages of such a solution include:

• maintaining the original design and operating parameters of the drivetrain,
• the possibility of matching by OEM numbers and interchangeable numbers,
• reducing vehicle downtime by replacing the complete unit.

To better assess the cost-effectiveness of purchasing a used transmission compared to regeneration, it is worth reading the guide: Used gearbox – when is it worth it and what you need to remember, which discusses the differences between manual and automatic transmissions and key compatibility issues.

Selection, compatibility and installation aspects

When selecting this gearbox, it is crucial to verify compatibility with the specific engine and drivetrain version of the vehicle, as well as to compare the OEM part number and interchangeable numbers with the vehicle data. This helps avoid installation problems and ensures proper cooperation with the control electronics.

It is recommended to:

• verify compatibility by numbers and vehicle model code,
• consult a mechanic or an automatic transmission specialist before installation,
• use the appropriate transmission oil in accordance with the vehicle manufacturer's requirements.

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 a torque converter, control elements, or additional transmission components, check the available parts in the BMW Automatic Gearboxes category.

Summary

Automatic Gearbox BMW G20 G21 X3 G01 X4 G02 M40dX GA8HP76X is a proposal for users who expect to maintain factory driving characteristics and high drivetrain refinement in BMW vehicles with diesel engines. A used automatic transmission of this class represents a reasonable compromise between cost and functionality, allowing the vehicle to be restored to full efficiency while maintaining the manufacturer's original technical solutions.