... longer service life,OEM offered 3.competive price 4.quick delivery aluminium cylinder head cover for auto motor machines: ... modelW615materialaluminiumstardardANSI,DIN,ISOdemension140*130*47(mm)usageused for screw compressor , ... such as valves ,shafts ,flanges ,bearing,compartment cover,insert and other non-standard parts equip with sophisticated ...