Description
The BMW F12 F13 640d N57Z Driveshaft L=1490MM 7631350 is an original drivetrain component designed for 6 Series models with an N57Z engine and automatic transmission. The precisely selected shaft length and construction compliant with BMW standards ensure stable torque transfer and proper cooperation with other drivetrain components. This is a solution for users who expect consistency with factory specifications and reliable compatibility with the automatic transmission system.
Specifications and technical data
- SKU: 7631350
- Mark: BMW (Genuine OE)
- Condition: Used
- OEM Part Number: 7631350
- Substitutable numbers: 7631350, 26107631350
- Gearbox type: Automatic
- Category: Propshafts
Purpose and Function of the BMW 640d Driveshaft
The presented driveshaft is responsible for the mechanical connection between the gearbox and the rear axle in BMW 6 Series F12/F13 models with the N57Z engine. Its function is to transfer torque from the automatic transmission to the drive axle while maintaining appropriate stiffness and vibration damping across the entire load range.
Due to its specific adaptation to the drivetrain configuration, the shaft works with factory universal joints and supports, which minimizes the risk of improper fit and undesirable vibrations during acceleration and high-speed driving.
Construction and Technical Characteristics
The driveshaft belongs to the group of components referred to as Cardan Joints, meaning it utilizes solutions that allow for compensation of angular and linear changes in the drivetrain. This enables smooth power transfer during suspension movement and load changes, without excessively stressing the gearbox and rear axle.
Key construction features of this component include:
- adaptation to the chassis geometry of BMW F12/F13 with N57Z engine,
- design for cooperation with an automatic transmission,
- maintenance of appropriate torsional stiffness while simultaneously damping vibrations.
This configuration promotes stable drivetrain operation and reduces noise and vibrations felt in the cabin.
Integration with Automatic Transmission
The shaft is designed to work with an automatic transmission, which is significant for both operational characteristics and the durability of the entire system. Automatic transmissions generate specific dynamic loads, making proper shaft adaptation crucial for:
- correct torque transfer during gear changes,
- reduction of jerks and overloads during kick-down and intense acceleration,
- maintaining appropriate drive smoothness in comfort and sport modes.
By adhering to the original design concept, installing this component helps maintain original driving characteristics and predictable vehicle behavior under various operating conditions.
Condition, Application, and Benefits of Installation
The offered driveshaft is a used component, which means an economical replacement option while maintaining compliance with BMW factory specifications. Choosing an original component from this group allows for:
- maintaining correct drivetrain alignment,
- minimizing the risk of dimensional incompatibility typical of universal aftermarket parts,
- preserving the manufacturer’s intended operating characteristics of universal joints and supports.
For owners of BMW 640d F12/F13 with N57Z engine, this is a particularly beneficial solution when replacing a worn or damaged shaft, especially when vibrations, clunks, or disturbing noises from the center tunnel area occur.
Complementary Components from the BMW Cardan Joints Group
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 universal joints, driveshaft supports, or flexible couplings, check the available parts in the BMW Cardan Joints category.
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