The drive shaft flex joint insulates the drive shaft from vibration and uncommon sounds in the transmission. It takes in torsional loads when the vehicle speed goes up or down.
Driveshaft flex joint functionThe driveshaft flex joint also known as a flex disc is a flexible coupling utilized to send rotational torque between the drive shaft and companion flange. This component is composed of flexible synthetic rubber and is made to reduce driveline vibration. The flexibility of the rubber soaks up any vibration and bends for alignment.
Common issues with a faulty driveshaft flex jointA faulty driveshaft flex joint can lead to stalling, rough idling, and uncommon knocking sounds.