BMW G20 B57 xDrive Propshaft Drive Shaft L=1327MM Automatic Transmission 9494155

BMW G20 B57 xDrive Driveshaft with a length of 1327 mm is a drivetrain component designed for vehicles with an automatic transmission and xDrive. This used driveshaft, sourced from the original BMW production line, ensures proper fitment for the specific G20 configuration with a B57 engine and stable drivetrain operation. It's a solution for users seeking a proven part at a reasonable price while maintaining factory specifications.

Specifications and technical data

• SKU: 9494155
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9494155
• Substitutable numbers: 9494155, 26109494155
• Gearbox type: Automatic
• Category: Propshafts

Intended Use and Compatibility with BMW G20 Drivetrain

The presented driveshaft is designed to work with the xDrive system in the G20 3 Series equipped with the B57 engine and an automatic transmission. It is responsible for transferring torque between the gearbox and further drivetrain components, maintaining the correct geometry and length tailored to the G20 body. This minimizes vibrations, ensuring smooth and predictable drivetrain operation.

Driveshaft Construction and Role in the Cardan Joint System

The driveshaft belongs to the group of components known as Cardan Joints, responsible for compensating for angular and linear changes during suspension and drivetrain operation. The appropriately selected driveshaft length and joint design allow for:

• stable torque transfer under varying suspension loads,
• reduction of unwanted vibrations and noise in the cabin,
• maintenance of correct angular alignment with the gearbox and differential.

Thanks to its factory origin, the driveshaft retains the correct mounting points and diameters that interface with other components of the BMW G20 drivetrain.

Benefits of Using an Original BMW Driveshaft

Using an original driveshaft to replace a worn or damaged component restores proper xDrive operation without the need for structural modifications. Key benefits include:

• factory fitment for the specific G20 configuration with a B57 engine and automatic transmission,
• maintenance of correct drivetrain alignment and geometry, reducing the risk of accelerated wear on bearings and joints,
• direct replacement for the old part without structural modifications,
• compatibility with other Cardan Joint system components in the vehicle.

For workshops and individual users, this translates to shorter installation times and a reduced risk of operational issues after replacement.

Part Selection and Verification Using BMW Numbers

The driveshaft is identified by a dedicated BMW part number and has associated replacement numbers, facilitating unambiguous identification in manufacturer catalogs and service systems. Before purchasing, it is advisable to compare the markings with the vehicle's data to confirm compatibility with the specific body version, drivetrain, and transmission. This selection method minimizes the risk of installing an incorrect part and ensures proper integration with the existing drivetrain.

Used Condition and Service Application

The offered driveshaft is a used part, primarily intended for service applications, collision repairs, or general maintenance. It is a practical solution when a damaged driveshaft needs replacement, and maintaining factory specifications while optimizing repair costs is a priority. A used component can restore drivetrain functionality, provided it is correctly installed and cooperating components such as supports, bearings, and other joints are verified.

If you are planning a comprehensive repair or upgrade of the drivetrain area in your BMW and need other parts from the same group, such as intermediate shafts, joints, or driveshaft supports, check the available parts in the BMW Cardan Joints category.

Additionally, if you are interested in safely selecting used parts for critical vehicle systems and want practical tips on assessing their technical condition, it is worth reading the guide: Second-Hand Braking Systems: How to Safely Choose Discs, Calipers, and ABS?. Although it concerns the braking system, the principles of verifying used parts presented there are also helpful for assessing other components.