BMW F10 F11 F07 535i N55 Automatic Gearbox GA8HP45Z 7640075 WARRANTY

Listing details

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

BMW F10 F11 F07 535i N55 Automatic Gearbox GA8HP45Z is an original, used automatic transmission designed for petrol engines, specifically engineered for 5 Series models with the N55 engine. Thanks to its factory BMW design, it ensures precise integration with the drivetrain and maintains gear-shifting characteristics consistent with the manufacturer's specifications. This is the ideal solution for users who expect proven, factory-standard automatic transmission performance without compromising on compatibility.

Specifications and technical data

• SKU: 7640075
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7640075
• Substitutable numbers: 7640075, 24007640075
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: Automatic Transmission

Purpose and compatibility

This automatic transmission has been developed for BMW 5 Series F10, F11, and F07 models in the 535i version with the N55 petrol engine. The transmission design is tailored to the torque characteristics of this unit, which translates into smooth acceleration, stable downshifts, and predictable vehicle behavior across the full load range. Using an original transmission from the Automatic gearboxes category minimizes the risk of mechanical and electronic fitment issues.

Technical characteristics of the GA8HP45Z transmission

The GA8HP45Z automatic transmission belongs to BMW's modern, multi-speed designs, engineered for efficient power delivery in petrol engines. The architecture allows for:

• smooth starting and dynamic acceleration while maintaining gear-shifting comfort,
• maintaining optimal engine RPM under typical road conditions,
• reduced fuel consumption through appropriate gear ratio selection,
• stable operation in both automatic and sequential modes (if supported by the vehicle).

The automatic transmission type is particularly beneficial for daily city and highway driving, providing comfortable gear changes without the need for manual clutch operation.

Application in the BMW drivetrain

When paired with the N55 petrol engine, the GA8HP45Z transmission is responsible for transferring power to the wheels while maintaining proper refinement and durability. The vehicle's control software is prepared to work with this type of transmission, which facilitates integration with existing electronics. In practice, this means:

• proper communication with engine and drivetrain control modules,
• retention of factory driving modes (e.g., comfort, sport – if present in the specific vehicle),
• consistent operation of driver assistance systems that rely on transmission performance.

As a result, installing an original automatic transmission to replace a worn-out unit is a technically safe and predictable solution in terms of the final outcome.

Benefits of choosing a used automatic transmission

Choosing a used transmission from the Automatic gearboxes category allows for a significant reduction in repair costs compared to purchasing a brand-new component, while maintaining the original BMW design. This solution is particularly advantageous for repairing vehicles that are used intensively or have higher mileage, where a reasonable cost-to-value ratio is key.

If you want to better understand how to safely select used transmissions and other drivetrain components, it is worth checking out our expert guide Why it is worth buying used gearboxes and engines – facts instead of myths, which discusses, among other things, selection by OEM numbers and practical aspects of operation.

Expanding the scope of drivetrain repairs

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 additional automatic transmissions, control elements, or related mounting parts, check out the available parts in the BMW automatic gearboxes category.