48057059 Swing Cylinder Fits CaseOne New Aftermarket Replacement 48057059 Swing Cylinder Fits Case Backhoe Loaders This aftermarket replacement swing cylinder Fits Case 580 Series backhoe loaders and controls the lateral swing movement of the backhoe boom. The swing cylinder is a hydraulic double acting cylinder mounted at the swing tower, allowing the boom to pivot left and right for digging and loading operations. Note: This cylinder fits the 3. 75 inch bore application verify your