Type of drive system that transmits power to all four wheels at all times. A special internal clutch in the transfer case diverts more or less power to the front wheels depending on road conditions.

Small metal weight frequently welded to a drive shaft to smooth operation and reduce vibration.

Driveline component that connects a drive shaft to a transmission output shaft and allows back and forth drive shaft movement in response to road conditions.

Term for the components and parts that transfer engine power from a vehicle transmission to its drive wheels.

Seal that rides on a slip yoke and prevents fluid leakage from the rear of the transmission.

A flexible joint that permits changes in driving angles between a driving and driven shaft. It is nicknamed a U-joint.

Transmission-driven gearbox that provides driving force to both front and rear drive shafts on a four-wheel-drive vehicle.