GrimmSpeed Air Oil Separator Red WRX (2002-2007) STI (2004-2018) Mazda of torque verified by our

of torque verified by our in house dyno

20mm 3-hole adjustable

and hardware will be included to complete installation

- One-piece construction

With over 40 years of automotive sway bar and suspension design

GrimmSpeed Air Oil Separator Red WRX (2002-2007) STI (2004-2018) Mazda of torque verified by ourGrimmSpeed has a unique design for the Subaru WRX, STI and Legacy GT which allows you to keep your PCV valve while separating the oil out of the crankcase and head ventilation air. None of the other competitors on the market are able to vent both. The unit is very compact and efficient, it bolts directly on to the factory oil cap location. You will no longer have to keep tabs on your oil level and or empty the catch can like on most standard cans as