This nipple is found on the intake manifold of turbo EJ25 Subaru motors, and 2004-2005 EJ20 motors.
Sold individually.
Fits all 2004-2014 Subaru WRX, and 2004-2021 WRX STI. This nipple also can be retrofitted to the 2002-2003 WRX when installing an air/oil separator.