Repair your driveline with the wide selection of U-joints for your 2003-2007 Ford 6.0L Powerstroke. A bad U-joint can cause a clunking sound or jerkiness while driving, particularly when pressing on or letting off the accelerator pedal. A bad U-joint can also cause vibrations at certain speeds, originating from the center or rear of the vehicle. If the U-joint fails, it could leave you stranded or cause serious damage if the driveshaft dislodges while you are driving. Over time due to wear and tear from the lack of lubrication, heavy-duty tasks, modifications to the vehicle, and even your driving habits can ultimately lead to universal joint failure. Shop all the top brands including Nitro Gear & Axle, Yukon Gear & Axle, and more!