... cylinder block ,all the product are OEM for heavy duty diesel engine and the tractor factory, supply to engine manufactory directly ... 6BT 5.9 ,Cummins 4BT 3.9 ,Cummins 6CT ,Perkins phaser serial , Perkins 1000 1004 1006 serial, Renault DCI11, FAW , China ... National Heavy- Duty Truck Group., Doosan D58 flywheel housing korea ,Shanghai diesel , ...