... .168F cylinder head 2.Aluminum cylinder block 3.ISO9001:2008 Cylinder block design for 168F aluminum cylinder head.We are a real factory ... ,2343,SKD61,45#steel,etc.Heat treatmentHardened,NitridingHardnessHRC50~55Mould featureAdvanced design, Novel structure, High precision, Quality materials, Long lifetime, Short ... finish some die casting projects with you together perfectly. cylinder block design