D136570 Bushing swing cylinder pivot Fits Case 580K, 580SKOne New Aftermarket Replacement Swing Cylinder Pivot Bushing Fits Case Backhoe Loaders This bushing fits at the swing cylinder pivot point on the backhoe attachment of Fits Case (Fits Case International Harvester) 580K and 580SK backhoe loaders. The swing cylinder pivot bushing is a wear item in the backhoe's swing tower assembly, allowing smooth articulation of the boom swing cylinder. Each machine requires two (2) of these bushings at this location.