Engine Valve 1.Truck engine valve for 4Cr/10Si2Mo/SNCrW 21-12N 2.Identification: ISO9002 / QS9000 3. ... Brand or OEM packing Valve role is responsible for input to the engine fuel and emissions We are the ... (40Cr) ; EXHAUST VALVE IS SUH3(4Cr9Si2). Engine valves are suitable for TOYOTA,AUDI,BESFORD,BMW,CATERILLAR,CUMMINS,DAF,DAIHATSU,DAEWOO,FORD ...