1.CNC grinded valve tappet . 2.100% QC . 3.Do not produce noise . 4.Free technical support . 5.Deliever on time . 1. Application: 1) gasoline engines, diesel engines, CNG Engines, generators.2) Japanese, Korean, European, American, etc. engines.3) car, passenger car, truck, tractor, construction machinery, agricultural machinery, motorcycle, industries and marine, etc.4) make of vehicle/engine: ...