BMW F30 F32 320i 420i B48 Automatic Gearbox Drive Shaft Propshaft 7641031

BMW F30 F32 320i 420i B48 Automatic Gearbox Drive Shaft Propshaft is an original drivetrain component from the Cardan Joints group, designed for BMW 3 Series F30 and 4 Series F32 models with the B48 engine and automatic transmission. This used OEM drive shaft ensures proper cooperation with the factory drivetrain, maintaining the performance characteristics intended by the manufacturer. It is a solution for users who expect precise fitment and stable drivetrain operation without interfering with the vehicle's construction.

Specifications and technical data

• SKU: 7641031
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7641031
• Substitutable numbers: 26107641031, 7641031
• Weight: 150
• Gearbox type: Automatic
• Category: Propshafts

Purpose and compatibility

The presented drive shaft is designed to work with the B48 unit in BMW F30 320i and F32 420i models equipped with an automatic transmission. The design, compliant with BMW factory standards, allows for maintaining the correct drivetrain geometry, which translates into stable torque transfer from the transmission to the rear axle.

The component belongs to the Cardan Joints group, responsible for compensating for suspension movements and changes in shaft operating angles during driving. Thanks to this, the drivetrain can operate smoothly both during acceleration and while changing loads, without unwanted vibrations or knocking.

Construction and technical properties

The drive shaft for the BMW F30/F32 with the B48 engine and automatic transmission uses universal joints and flexible elements that reduce torsional vibrations and noise transmitted to the body. The properly selected weight of the component and its factory balancing are of key importance for the durability of the bearings, the drive axle, and the transmission.

The most important technical features of this subassembly include:

• design adapted to the characteristics of the B48 engine and rear-wheel drive,
• use of Cardan joints ensuring compensation for suspension movements,
• factory balancing to reduce vibrations at higher rotational speeds,
• compatibility with the automatic transmission intended for 320i and 420i models.

A drive shaft configured in this way allows for maintaining the proper operating parameters of the drivetrain, which is important for both driving comfort and the service life of other components.

Practical application and benefits of installation

Installing an original drive shaft in a BMW F30 or F32 is particularly important in the case of symptoms such as body vibrations during acceleration, knocking when starting, or noticeable play in the drivetrain. Using a component from the Cardan Joints group with specifications compliant with the factory standard allows for restoring the correct operation of the system without the need for structural modifications.

The main benefits of using this subassembly include:

• restoration of correct torque transfer between the transmission and the axle,
• reduction of vibrations and noise in the cabin,
• reduction of shock loads acting on the transmission and differential,
• preservation of the vehicle's original handling characteristics.

For workshops specializing in the BMW brand, using the correct drive shaft also means easier diagnostics and a predictable final repair result.

Condition, origin, and selection by numbers

The offered component is used, which allows for an economical repair while maintaining the manufacturer's original specifications. The shaft comes from a dismantled BMW vehicle, thanks to which its geometry and configuration are consistent with the factory assumptions for F30 320i and F32 420i models with an automatic transmission.

The selection of the correct drive shaft for a specific car should be based on the OEM number and interchangeable numbers, as well as the drivetrain configuration and transmission type. If necessary, it is worth verifying compatibility by VIN to avoid problems with installation and shaft length matching.

If you want to expand your knowledge on the cost-effectiveness of using aftermarket components in the drivetrain, practical selection procedures by VIN and OEM, and real cost differences, the following expert guide will be helpful: Why it is worth buying used gearboxes and engines – facts instead of myths.

Repair expansion within the BMW drivetrain

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