BMW F90 M5 F92 M8 X3 M F97 Transfer Case Box Transmission ATC13 8090770 WARRANTY

Listing details

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

The BMW F90 M5 F92 M8 X3 M F97 Transfer Case Box Transmission is a used, original drivetrain component that allows for professional repair or replacement of the factory unit. Thanks to its compliance with OEM designations and interchangeable part numbers, it provides a precise solution for demanding users who expect reliable all-wheel-drive performance and the maintenance of factory xDrive operating parameters.

Specifications and technical data

• SKU: 8090770
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8090770
• Substitutable numbers: 8090770, 27108090770, 8747766
• Category: Transfer Cases

Purpose and function in the drivetrain

The offered ATC13 family transfer case has been designed to work with high-performance engines and sport-tuned automatic transmissions in BMW M-series models. It is responsible for precise torque distribution between the front and rear axles, which translates into stability, traction, and predictable vehicle behavior in both road and track modes.

In vehicles such as the F90 M5, F92 M8, or X3 M F97, a correctly selected transfer case is crucial for maintaining the drive characteristics, the proper operation of stability control systems, and the effective transfer of high power to the asphalt.

Benefits of using an original transfer case

Using an original component from the Transfer Cases category ensures:

• maintenance of the factory xDrive operating characteristics in M versions,
• proper cooperation with control electronics and safety systems,
• correct mechanical fitment to mounts and drive shafts,
• the possibility of professional repair without the need for structural modifications.

For high-power vehicles, such as the sporty BMW M, choosing the right transfer case has a direct impact on stability at high speeds, acceleration efficiency, and performance repeatability.

Selection by OEM and interchangeable numbers

Precise selection of a transfer case for a specific vehicle is based on the OEM part number and associated interchangeable numbers. This allows for verifying compatibility with a specific engine version, model year, and drivetrain configuration, minimizing the risk of incorrect fitment.

If you want to better understand how to safely choose used drivetrain components, including transfer cases and engines, and how to use OEM numbers when selecting parts, check out our guide Why it is worth buying used transmissions and engines – facts instead of myths.

Condition, installation, and service application

The item is offered as a used transfer case, which allows for an economical yet technically sound repair of the drivetrain in BMW M-class cars. This type of component is intended primarily for service applications – replacing a damaged or worn transfer case in vehicles used both in daily traffic and in more dynamic driving conditions.

Before installation, standard workshop procedures are recommended: checking for leaks, verifying clearances, changing the oil in the transfer case according to the vehicle manufacturer's recommendations, and performing an adaptation in the diagnostic system if required by the specific model.

Expanding repairs within the BMW drivetrain

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 additional transfer cases, housings, or compatible components, check out the available parts in the BMW Transfer Cases category.

Summary

The presented BMW F90 M5 F92 M8 X3 M F97 Transfer Case Box Transmission is a solution aimed at users who expect a technically sound repair of the xDrive system while maintaining factory operating parameters. The original design, compliance with the OEM number and interchangeable numbers, and the possibility of professional installation in a specialized service center make it a practical choice when replacing a worn or damaged transfer case in sporty BMW models.