Subaru WRX 2002-2007 / STI 2004+
SUBARU OEM BLOW OFF VALVE FLANGE GASKET
This is a Genuine Subaru OEM part. This gasket goes in between your blow off valve and your top mount intercooler. It is important to ensure that you never have any leaks at that connection otherwise you will lose boost, and nobody has time for that.
Replace this gasket anytime you remove, replace, or upgrade your blow-off valve.