... endurance, High erosion endurance, High concussion endurance. intake & exhaust valve. High attrition endurance, High temperature endurance, High ... and normal, good material: INLET VALVE IS SUH3(4Cr9Si2) ; EXHAUST VALVE IS SUH35(21-4N), normal material: INLET VALVE IS SUH1(40Cr) ; EXHAUST VALVE ... FIAT,HILLMAN,HINO,HONDA,HYUNDAI,ISUZU,KAWASKI,KIA,LADA,LEYLAND,LISTER,MAZDA.BENZ,MITSUBISHI,NISSAN ...