OTTO Excavator Parts Tcm 4Fe1 Connecting Rod Bushing 8973103526 897310-3526 8-97310352-6 For Isuzu This OTTO Excavator part, the connecting rod bushing for TCM 4FE1 engine (8973103526), is designed to reduce friction between the connecting rod and the crankshaft, ensuring smooth engine operation. Specifically crafted for Isuzu engines, maintaining optimal performance and longevity.