... by our team of experienced professionals, our range of engine values always stand taller in terms of durability and performance ... EXHAUST VALVE IS SUH3(4Cr9Si2). Engine valves are suitable for TOYOTA,AUDI,BESFORD,BMW,CATERILLAR,CUMMINS,DAF,DAIHATSU,DAEWOO,FORD,FIAT,HILLMAN ... -plating , surfacing nitration treatment.Of course , we can produce engine valves according to your samples . MARK IN / EX GUNES ...