930-101-170-02 Engine Case Stud, Fits 911 1974-89 930

Engine case stud. When performing engine repair that requires separation of the case halves, it is always a good idea to replace the old hardware with brand new pieces. Stud threads can stretch when torqued multiple times, and a new set of studs will avoid any loose connection. Naturally aspirated flat-6 powered 911 models built between 1974 and 1989 require 12 studs. Turbocharged 3.0L and 3.3L 911 Turbo (930) models of all years require 24 studs.