These are the Origional Subaru Head Studs used in the EJ Series Turbo Engine's. These will fit the 2002+ USDM WRX, 2004+ STI, 2004+ Forester XT, and 2005+ Legacy GT.
We sell them either individually, or as a set.
The Subaru Part # for these is 11095AA042, and you would need 12 for a complete set, 6 for each side.