Repair your driveline with the wide selection of U-joints for your 2008-2010 Ford 6.4L Powerstroke. Symptoms of a bad U-joint can include clunking sounds, squeaking or clicking noises, and vibrations most noticeable at highway speeds. Heavy loads, vibrations due to misalignment, and material wear can lead to loose play within the bearings which can ultimately lead to universal joint failure. If the U-joint fails, it could leave you stranded or cause serious damage if the driveshaft dislodges while you are driving. Shop all the top brands including Nitro Gear & Axle, Yukon Gear & Axle, and more!