K 2500 Truck 4WD V8-454 7.4L VIN J SFI (1997)
Center Support: Description and Operation
Center bearings support the driveline when two or more propeller shafts are used. The center bearing is a ball bearing mounted in a rubber cushion that is
attached to a frame crossmember. The bearing is prelubricated and sealed by the manufacturer. The cushion allows vertical motion at the driveline and
helps isolate the vehicle from vibration.