What component is the connection between a driveshaft and the differential in a vehicle?

The connection between a driveshaft and the differential in a vehicle is facilitated by the U-joint, which stands for universal joint. This component allows for the transfer of torque and rotation while accommodating the movement of the rear axle. As the vehicle moves, the rear axle can shift in position due to suspension travel or changes in load, and the U-joint is specially designed to handle these angular movements.

The Universal Joint's flexibility is essential because it allows the driveshaft to maintain a stable connection to the differential, ensuring that power can be effectively transmitted to the wheels without undue stress on the drivetrain components. This is critical for maintaining vehicle performance and reliability, as it enables smooth operation even when the vehicle is on uneven terrain or when taking turns.

In contrast, a transmission serves a different role by adjusting engine power for different driving conditions; a gearbox is more aligned with changing gear ratios within specific applications; and a wheel hub connects the wheel to the axle but does not serve the same purpose in connecting the driveshaft to the differential.