Description
BMW F12 F13 Driveshaft L=1516MM 7631349 is an original drivetrain component designed for BMW 6 Series F12/F13 models with an automatic transmission. This driveshaft from the Cardan Joints group ensures precise torque transfer while maintaining the correct system geometry. Thanks to its factory OEM design, it provides a solid foundation for professional drivetrain repair.
Specifications and technical data
- SKU: 7631349
- Mark: BMW (Genuine OE)
- Condition: Used
- OEM Part Number: 7631349
- Substitutable numbers: 7631349, 26107631349
- Weight: 150
- Gearbox type: Automatic
- Category: Propshafts
Application and Function in the Drivetrain
The driveshaft in the BMW F12/F13 is responsible for the stable connection between the gearbox and the rear drivetrain, operating under demanding load conditions. The component from the Cardan Joints category must maintain appropriate torsional stiffness while simultaneously compensating for suspension and body movements, which directly impacts the system’s operational smoothness and reduces vibrations and noise.
The precisely selected length of the shaft and the design of the joints allow for maintaining correct working angles, which is crucial for the durability of the entire drivetrain system in rear-wheel-drive BMWs.
Compatibility with Automatic Transmission
The presented driveshaft is designed to work with an automatic transmission, meaning it is adapted to the characteristics of a gearbox with smooth gear changes and variable dynamic loads. In practice, this translates to:
- stable torque transfer during frequent gear changes,
- minimized vibrations during starting and acceleration,
- proper cooperation with factory mounting elements and supports.
By maintaining the original geometry, the driveshaft works with the factory mounting points in the BMW F12/F13 body, which facilitates installation and reduces the risk of incorrect system alignment.
Technical and Constructional Characteristics
The BMW F12 F13 driveshaft is manufactured as a component with high fatigue resistance, adapted for operation in long-term load cycles. The design includes the use of universal joints and flexible elements that:
- compensate for minor axial misalignments between the gearbox and the drive axle,
- reduce vibration transfer to the body,
- ensure smooth power transmission across the entire speed range.
The appropriately selected mass of the shaft and its distribution along its length contribute to dynamic balancing, which is important for driving comfort at higher speeds. The product also has assigned replacement numbers, which facilitates verification of compatibility with a specific vehicle configuration.
Condition, Origin, and Service Application
This component is a used part obtained from disassembly and is offered as a used part, allowing for economical drivetrain repair while maintaining the original BMW specification. In practice, this is a beneficial solution in situations where:
- the original driveshaft has suffered mechanical damage or joint wear,
- vibrations or knocking noises occur in the drivetrain requiring replacement of the entire shaft,
- the component needs to be replaced with a part that matches factory parameters.
Choosing an original BMW driveshaft allows for maintaining the vehicle’s structural integrity, which is particularly important in premium vehicles such as the BMW 6 Series F12/F13.
Support with Selection and Knowledge Expansion
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 intermediate shafts, flexible couplings, or driveshaft supports, check the available parts in the BMW Cardan Joints category.
For users interested in the differences between standard components and high-performance components, an article describing the specifics of BMW sports drivetrain solutions may be useful – more information can be found in the material BMW M Performance: What’s the Difference Between BMW M Components and Standard Ones?.
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