main bearing: 1. It is Cummins 6BT engine main bearin 2. OEM number: 3901176 main bearingRemarks: 1) We manage in auto engine valve, ... camshaft, cylinder head, cylinder block, connecting rod, main bearing, crankshaft bearing, connecting rod bearing, vribbed belt, belt tensioner, water pump, lubricating oil ... East, Africa and Southeast Asia. Desire our cooperation! Cummins 6BT5.9 Main Bearing 3901176