Pay in 4 interest-free payments of $59.37 Learn more
Ships within 48 hours · Estimated delivery Sep 2 - Sep 7
including factory
Your vehicle and wallet will benefit from Tein's efforts
Please note the air box will not work with 2019+ STI
We literally bring each vehicle into our development center so we can create the best fitting
800"= Coil bind
Radium Air Oil Separator Kit - Subaru WRX VA Flywheels including factoryA high powered modified engine tends to generate excessive blow by oil and gasses. In these cases, an ordinary small catch can may quickly fill with oil and not be adequate. Like the Radium Engineering Catch Cans, the AOS (Air Oil Separator) kit is responsible for keeping blow by oil and other pollutants out of the air intake and intercooler (if equipped) systems. The main difference is that an AOS system returns collected oil back into the oil pan so
