... 2.Type: general, extended crankcase,tunnel cylinder block; 3.Material:iron The main description:The cylinder block is a basic part of auto ... cylinder block, extended crankcase cylingder block, tunnel cylinder block;AudiCertificationISO/TS 16949:2002 ISO9001:2000Mercedes-BendzStructurecylinder walls, coolant passages, cylinder sleevesBMWmaterialsgrey cast iron, ductile cast iron ...