... for Automobile Spare Parts 1.Aluminum die casting 2.ISO9001:2008 3.SGS 4.Good quality,fast delivery Cylinder Head for Automobile Spare PartsWe ... Heat treatmentHardened,NitridingHardnessHRC50~55Mould featureAdvanced design, Novel structure, High precision, Quality materials, Long lifetime, Short delivery timeEquipmentCNC precision mould ... you together perfectly. Cylinder Head for Automobile Spare Parts