Sonnax’s Power Train Savers (PTS) offer advanced protection for trucks with axles, differentials and driveshafts at risk for over-torque damage. Each PTS unit works on a series of three torque fuses engineered to shear at specific torque loads. When the fuses snap, the PTS unit’s internal system holds the driveshaft in place. Just replace the fuse links right on the job to get up and running again fast. PTS units are available for all heavy trucks.