This is a complete set of exhaust manifold hardware, which is six each of header studs and the matching nuts. Genuine OEM Subaru parts! Set of six studs and nuts, for all turbo Subaru engines, both EJ and FA.
Fits all 2002-2014 Subaru WRX and 2002-2021 WRX STI, plus turbo Legacy, Outback, and Forester models.