... , camshaft, cylinder head, cylinder block, connecting rod, main bearing, crankshaft bearing, connecting rod bearing, vribbed belt, belt tensioner, water pump, lubricating oil pump ... you especially. 2) Our products are mainly sold in the domestic market and also exported to Unites States, Europe, Japan, Middle ... and Southeast Asia. Desire our cooperation! Cummins 6BT5.9 Main Bearing 3901091