BMW X3 F25 X5 F15 X4 F26 X6 F16 Transfer Box Case 8643151 WARRANTY

Listing details

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

BMW X3 F25 X5 F15 X4 F26 X6 F16 Transfer Box Case is an original drivetrain component from the Transfer cases group, designed to work with automatic transmissions in selected BMW models with all-wheel drive. This used transfer case allows for a technically sound repair of the xDrive system, maintaining factory performance characteristics and compatibility with the vehicle's electronics.

Specifications and technical data

• SKU: 8643151-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8643151
• Substitutable numbers: 27108643151, 8643151, 27107505376, 7505376, 27108623348, 8623348, 27107639265, 7639265, 7643760, 27108612554, 8612554, 27107649784, 7649784, 27608643153, 8643153, 27607649785, 7649785, 27607639261, 7639261, 27107636180, 7636180, 5A371E2, 5A4A0C1, 27105A371E2, 1053712, 27108697255, 8697255
• Gearbox type: Automatic
• Part type: Transfer Case
• Category: Transfer Cases

Purpose and function of the transfer case

The presented transfer case is the component responsible for distributing torque between the vehicle's axles in BMW cars equipped with all-wheel drive and an automatic transmission. It operates in direct connection with the gearbox, ensuring proper gear ratios and stable power transmission under various road conditions.

Thanks to a design compliant with the manufacturer's standards, the transfer case maintains the operating parameters intended for the xDrive system, which translates into predictable vehicle handling, correct interaction with stability control systems, and comfortable distribution of drive between the axles.

Compatibility with BMW models

The transfer case has been designed for use in popular BMW SUV models, such as the X3 F25, X5 F15, X4 F26, and X6 F16. This means it can be used both in vehicles with a more utility-oriented character and in high-performance versions, where the drivetrain is subject to particularly high loads.

For proper part selection, it is recommended to compare vehicle data with the OEM number and interchangeable numbers in the technical specifications, as well as to verify via the VIN. This approach minimizes the risk of mismatch and speeds up the installation process in the workshop.

Technical characteristics and advantages of use

The transfer case works with an automatic transmission, which requires precise tuning with the vehicle's hydraulic and electronic systems. Using an original component from the BMW OE group allows you to maintain:

• consistent operation with factory controller software,
• appropriate torque distribution characteristics,
• proper interaction with safety and traction control systems.

Choosing a used transfer case from this series is an economical yet technically sound solution, especially when repairing vehicles that are used intensively or have higher mileage. The original design ensures proper fitment with other drivetrain components without the need for modifications.

Application in service practice

This type of transfer case is often chosen by workshops specializing in the BMW brand as a component that allows for the restoration of proper xDrive operation after a failure or wear of the factory unit. Installation is performed in place of the factory transfer case, maintaining original mounting points and connections to the drive shafts.

In service practice, it is important to verify the part's compatibility with the vehicle and the condition of mating components, such as shafts, joints, or mounts, before installation. A correctly selected transfer case reduces the risk of vibrations, improper drive distribution, and electronic system errors.

Selection support and expert knowledge

When selecting a used transfer case for a specific BMW vehicle, it is crucial to use the OEM number, interchangeable numbers, and data from catalog systems. A detailed discussion of selection procedures using VIN and OEM, as well as a comparison of repair costs using new versus used parts, can be found in the article Why it is worth buying used gearboxes and engines – facts instead of myths, which provides practical support for mechanics and users.

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 transfer cases, housings, or related parts, check out the available parts in the BMW Transfer cases category.