Boom at Swing Tower Bushing Fits Case 500 Series Length 1.50” OD 3.70” ID 2.76”One New Aftermarket Replacement Boom at Swing Tower Bushing Fits Case Backhoe Loaders This aftermarket replacement bushing fits at the boom to swing tower connection on Fits Case 500 Series backhoe loaders. The bushing locates where the boom pivots at the swing tower, a high wear point subject to constant load cycling during digging and swinging operations. Each machine requires two (2) of these bushings at this location. Specifications Inner