Grimmspeed Air / Oil Separator Parts Kit (no hose) WRX 2008-2014 / Legacy GT 2005-2009 | 078053 BRZ_2013-2020 or purchase the full Billetworkz

or purchase the full Billetworkz Shifter Kit for the ultimate 15-23 WRX shifting experience

370Z (2009–2020)

This ensures reliable fit and helps maintain consistent clearances

Adjustable/slotted pulley design

A MOMO hub is required for installation

Grimmspeed Air / Oil Separator Parts Kit (no hose) WRX 2008-2014 / Legacy GT 2005-2009 | 078053 BRZ_2013-2020 or purchase the full BilletworkzProduct Fitment: 2008 2014 WRX 2005 2009 Legacy GT If you picked up a second hand GrimmSpeed Air Oil Separator, it is likely that you are missing most of the hardware pieces to go along with it. We are happy to offer replacement hardware kits to get your Subaru back on the road and keep blow by under control! If you are replacing the hardware, we also recommend picking up one of our AOS Rebuild kits to replace the O Rings in the AOS body that can wear