Ford 1L5Z-4602-CB Drive Shaft Assembly

That is a tube running between the transmission and the rear (or front) axle which transmits power towards wheel. It has universal joints on either end to allow for bending. On some driveshafts, there is a splined lip yoke that attaches it onto the transmission assembly while others have a slip yoke that permits suspension movement. Since the slip yoke at the front is not sealed completely, it uses an oil seal to prevent leaks. A driveshaft calls for infrequent attention such as lubricated universal joints and replacement in case of breakdowns. Hence, it should remain clean from dirt and debris or checked for possible wearing out of balancing weights. This will be indicated through noise or vibration when driving possibly diagnosed by road testing or checking for worn universal joint caps.