BMW M3 F80 M4 F82 F83 M2 F87 N55 Automatic Gearbox DCT GS6-45BZ 7858800 WARRANTY

Listing details

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

BMW M3 F80 M4 F82 F83 M2 F87 N55 Automatic Gearbox DCT GS6-45BZ is a used, original automatic transmission from the Automatic gearboxes group, designed for BMW sports models with petrol engines. It provides a solid foundation for professional drivetrain repair, ensuring proper torque transfer and maintaining the performance characteristics typical of the M series.

Specifications and technical data

• SKU: 7858800
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7858800
• Substitutable numbers: 7858800, 23007858800, 4805761, 23004805761, 7857700, 23007857700, 2284700, 23002284700
• Fuel type: Petrol
• Gearbox type: Automatic
• Part type: Automatic Transmission
• Category: Automatic Transmission

Purpose and compatibility

The described automatic gearbox is dedicated to BMW M3 F80, M4 F82, M4 F83, and M2 F87 models with the N55 petrol engine. The transmission design was developed to handle the high loads typical of sports-oriented vehicles, which translates into stable operation across a wide range of engine speeds.

The selection of this gearbox for a specific vehicle should always be verified by the OEM number and interchangeable numbers to ensure full mechanical and electronic compatibility with the vehicle's drivetrain.

Technical and functional characteristics

The automatic transmission from this series was designed to work with petrol engines, which means appropriately selected gear ratios, shift characteristics, and adaptation to a dynamic driving style. The type of automatic transmission used allows for smooth, predictable gear changes, which improves driving comfort and stability during acceleration.

In practice, this translates into:

• consistent operation with the N55 engine control system,
• appropriate response to loads typical of M models,
• maintaining proper dynamics during daily use and more demanding driving.

For the user, this means that after proper installation and adaptation, the gearbox can ensure stable drivetrain operation and predictable vehicle behavior in various road conditions.

Condition, origin, and benefits of choosing a used gearbox

The offered gearbox comes from dismantling and is sold as a used part, which allows for a significant reduction in repair costs compared to purchasing a brand-new transmission. For many BMW M series users, this is a reasonable compromise between financial expenditure and maintaining the vehicle's original specifications.

Choosing a used automatic gearbox is particularly important for high-power cars, where maintaining factory performance parameters is crucial for the durability of the entire drivetrain. A properly selected transmission allows for maintaining correct gear shift characteristics and cooperation with the vehicle's electronics.

If you want to better understand how to safely purchase components from the secondary market, including transmissions and engines, it is worth reading the expert guide Why it is worth buying used gearboxes and engines – facts instead of myths, which discusses, among other things, selecting parts by OEM number and cost aspects.

Professional selection and practical application

To fully utilize the potential of this gearbox, installation in a specialized service center with experience in working with BMW M3, M4, and M2 models is recommended. Proper connection, topping up the working fluid, adaptation procedures, and any necessary control software updates have a direct impact on the durability and operating culture of the transmission.

In practice, the selection and installation process usually includes:

• verification of compatibility by OEM number and reference numbers,
• inspection of accompanying components (e.g., mounts, lines, cooling),
• conducting a test drive after installation to evaluate gear performance.

Thanks to this, the gearbox can be integrated into the existing drivetrain without unwanted differences in vehicle behavior, which is particularly important in cars with sports characteristics.

Expanding the drivetrain in BMW – Automatic gearboxes

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 a converter, control elements, or additional transmission sub-assemblies, check the available parts in the BMW automatic gearboxes category.

Summary

BMW M3 F80 M4 F82 F83 M2 F87 N55 Automatic Gearbox DCT GS6-45BZ is a proposal for users who want to restore the efficiency of the drivetrain while maintaining the manufacturer's original specifications. A used automatic transmission for the N55 petrol engine allows for a technically correct repair while reducing costs compared to new components. For owners of BMW sports models, this is a practical solution that combines structural compatibility with functionality tailored to the character of the M series.