This is a cylinder head manifold stud.
For SOHC Fiat engines including those in Fiat X19, 128, Yugo, Strada this stud fits the outer four manifold stud positions and is also used for mounting the carburetor.
For DOHC Fiat engines, these are used for mounting all carburetors except ADFA and ADHA.
Also applicable as exhaust manifold flange studs (where manifold meets downpipe) on most SOHC and DOHC engine applications.
M8x1.25, 35mm overall length, with 20mm threaded grip area, 5mm shoulder, 10mm well length.
New and unused.