Drive Shaft Center Supports are rubber and metal parts bonded together around a bearing These supports are used to stabilize drive shafts when the complete system is split into two or more sections They are usually mounted close to where two sections come together These supports not only aid in he reduction of noise, harshness, and vibration (NHV,) but also keep the drive shafts at the correct angles Using the incorrect support can put the drive shaft at a different angle, resulting in u-joint and bearings wearing out quicker.