HiDCA our company is active in the maintenance of industrial equipment and involved in industrial parts supply. Currently working with Iran Railway Company and repair of the RAIL BUSES trains.However Now we need the following parts of diesel engine D 2842:1-Cylinder head2-Cylinder head bolts:51.90490-0022 EXTERNAL HEX ROUND BOLT M15X2X168-1200N/MM2-E20-ZNPHR351.90490-0023 EXTERNAL HEX ROUND BOLT M15X2X144-1200N/MM2-E20-ZNPHR351.90490-0024 EXTERNAL HEX ROUND BOLT M15X2X109-1200N/MM2-E20-ZNPHR33-Ring and pistonAlso we need actuator of this engine.I appreciate if you can help me.