GRIMMSPEED AIR OIL SEPERATOR - 04-20 STI, 02-07 WRX, 04-08 FXT
Removing oil out of your intake system will result in a more efficient engine. An Air Oil Separator takes the place of an oil catch can or tank, resulting in you not having to empty your oil catch can. As well as being very subtle and not noticeable.
Another benefit to this unique design is the compact and clean look; making this ideal for someone who wants to keep it looking stock under the hood.
2004-2020 Subaru STI & Type-RA
2002-2007 Subaru WRX
2004-2008 Subaru Forester XT