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

Fitment Information:

2004-2021 Subaru STI

2006-2007 Subaru WRX (08-14 WRX can work if updated to the STi intake manifold)

2004-2008 Subaru Forester XT

Note: This item works with a lot of of other vehicles with EJ25 engine swaps that utilize the OEM STi or WRX aluminum intake manifolds.

Features:

The I Build Race Cars Air Oil Separator kit is a triple pass system with carefully designed diameters and cross sections to effectively remove a range of oil droplet sizes. This AOS installs directly above the main crank case vent between the intake manifold and the TMIC. Installing here allows a clean look and the shortest possible hose routing. Since this is a true AOS the oil drains back into the block and never needs to be emptied. Small ridges on the faces of the spiral baffles collect the oil and allows the oil to stay out of the laminar airflow and effectively drain down to base of the system. The internals can be cleaned periodically by disassembling the unit with the tool-free thumb screw on top.

• Throttle Body Type: Drive by Wire
• Never needs to be emptied
• Short hose routings for a very clean install
• Carbon fiber outer housing tube for a high performance look and feel
• Retains factory PCV functionality
• Triple pass system for the most effective droplet separation
• Tool free and easy to clean assembly

Included in this Kit:

• AOS01 Assembly
• AOS01 Mounting Bracket
• All Required Hoses and Hose Clamps for the installation