GrimmSpeed Air Oil Separator Blue WRX (2002-2007) STI (2004-2018) Mazda The number of filter layers

The number of filter layers affect the performance and price of your intake (less layers = lower price

Competition Clutch is guaranteed to have the right setup for your needs

Height: 22

Sold as a pair

you can see the shifter cable move within its mount and you can see the shifter cable housing rattling against the shifter cable (O-ring used for emphasis)

GrimmSpeed Air Oil Separator Blue WRX (2002-2007) STI (2004-2018) Mazda The number of filter layersGrimmSpeed 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