1.CNC grinded valve tappet . 2.100% QC . 3.Do not produce noise . 4. ... , generators.2) Japanese, Korean, European, American, etc. engines.3) car, passenger car, truck, tractor, construction machinery, agricultural machinery, motorcycle, industries and marine ... -66070302 / 1Mobile: +86-15869439272Skype: wiseadahttp://chinasol.en.alibaba.com volvo valve tappet with high performance