... engine valve, piston, piston ring, piston pin, cylinder liner, crankshaft, camshaft, cylinder head, cylinder block, connecting rod, main bearing, crankshaft bearing, ... cooperation! CUMMINS 4BT CYLINDER HEADCUMMINS 4BT CYLINDER BLOCKCUMMINS 6BT CYLINDER BLOCKCUMMINS 6BT CYLINDER HEADCUMMINS 6CT CYLINDER HEADCUMMINS 6CT CYLINDER BLOCKCUMMINS 6L CYLINDER HEAD Cummins Cylinder Block and Cylinder Head