I Build Race Cars Air Oil Separator Drive by Wire Subaru WRX 2006-2007 / STI 04-21 | AOS01

This air oil separator is designed to fit specific Subaru models. To install it, place it directly above the main crank case vent between the intake manifold and the TMIC. The included mounting bracket, hoses, and hose clamps will help you with the installation. You don't need to empty the oil as it drains back into the block. The separator has a carbon fiber outer housing which not only looks great but also gives a high - performance feel. It retains the factory PCV functionality. The triple - pass system effectively separates oil droplets. To clean it, just use the tool - free thumb screw on top to disassemble the unit and clean the internals periodically. Note that it can work with many vehicles with EJ25 engine swaps using specific intake manifolds, and 08 - 14 WRX models need an updated STi intake manifold to be compatible.