Brand:OSVAT, QUEEN, DOKURO Intake Valve (CATERPILLAR 3304NT) Engine NO. : 3304NT Model: CATERPILLAR IN/EX: IN OEM: 5 1, ... 1) Intake Valves: 40Cr, 4Cr9Si2 2) Exhaust Valves: 4Cr9Si2(SUH1) , 21-4N(SUH35) We could supply various kinds of engine valve for vw ... , mazda, isuzu, lada, honda, gm, ford, daihatsu, chrysler, audi, etc. engine valves