Automatic Gearbox BMW F10 F20 F21 F30 F31 Petrol N20 GA8HP45Z 8601690 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 F10 F20 F21 F30 F31 Petrol N20 GA8HP45Z is a factory-original, used automatic transmission designed for BMW vehicles equipped with the N20 petrol engine. Thanks to its design, tailored to the specific generation of F-series models, it ensures compatibility with factory electronics and the drivetrain. This is the ideal solution for users who expect an original automatic gearbox rather than replacements with uncertain parameters.

Specifications and technical data

• SKU: 8601690
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8601690
• Substitutable numbers: 8601690, 24008601690
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: Automatic Transmission

Purpose and compatibility with BMW models

The presented automatic gearbox has been designed to work with the N20 petrol unit in popular F-series models, such as the BMW F10, F20, F21, F30, and F31. This ensures the maintenance of proper gear-shifting characteristics, correct communication with control modules, and alignment with the factory drivetrain settings.

By using an original BMW design, the transmission retains factory mounting points, geometry, and operating logic, which facilitates installation and reduces the risk of software or hardware compatibility issues.

Technical specifications of the GA8HP45Z automatic gearbox

The gearbox belongs to the Automatic Gearboxes category and is intended for use with petrol engines. Automatic gear control ensures smooth, predictable drivetrain operation, which translates into driving comfort in both urban traffic and on the highway. The applied design allows for efficient torque transfer of the N20 unit while maintaining appropriate operating standards.

This type of automatic transmission works with factory BMW control systems, allowing the use of driving modes offered by the vehicle (e.g., comfort and more dynamic settings, if available in the specific car). This maintains consistency with the engine system, safety systems, and onboard electronics.

Practical application and benefits of installation

Choosing an original automatic gearbox for a BMW with an N20 petrol engine is a solution that allows you to restore full drivetrain functionality after a failure or wear of the previous transmission. A used unit from the same design family ensures:

• retention of factory gear-shifting characteristics,
• proper cooperation with the existing wiring harness and control units,
• reduction of the need for mechanical modifications during installation,
• consistency with the operating parameters of the N20 petrol engine.

For many users, this is a technically sound alternative to expensive repairs or remanufacturing of the existing transmission, especially in cases of severe mechanical damage.

Condition, origin, and installation aspects

The offered gearbox comes from the BMW parts group and is a used item, which allows for repair cost optimization while maintaining the original design. This type of transmission is particularly attractive in situations where a combination of factory origin and a reasonable service budget is a priority.

Before installation, a standard workshop procedure is recommended: verification of tightness, inspection of the condition of associated components, and the use of appropriate transmission oil in accordance with the vehicle manufacturer's requirements. Professional installation at a specialized service center minimizes the risk of subsequent operational problems and ensures correct adaptation of the gearbox in the vehicle.

Expert support and selecting the right gearbox

If you are considering whether choosing a used automatic transmission is the right solution for your car, it is worth reading the guide describing the cost-effectiveness of such a decision, the differences between manual and automatic gearboxes, and compatibility issues – these are discussed in detail in the article "Used gearbox – when is it worth it and what you need to remember".

Additionally, when planning a drivetrain repair, material explaining when it is better to opt for remanufacturing and when to choose an original part from dismantling may be helpful – these issues are described more broadly in the entry "Remanufactured or used original – which part to choose for repair?".

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 sub-assemblies, check the available parts in the BMW Automatic Gearboxes category.