COBB Tuning Air Oil Separator Black/Red - 2002-2007 Subaru WRX / 2004-2007 STI PDM_engine bright option for Si builds

bright option for Si builds where the polished look is preferred

Firming up the gearbox mount with Whiteline's insert improves the shift quality feel

Note that this particular expansion tank will come powder-coated in the Nitrous Blue finish for extra protection against corrosion

The Carbon Fiber Rear Roof Spoiler will provide race-inspired looks and more downforce on the exterior of the new A90 Toyota Supra

The racing Timing Belt version is 300% stronger than the OEM version

COBB Tuning Air Oil Separator Black/Red - 2002-2007 Subaru WRX / 2004-2007 STI PDM_engine bright option for Si buildsCobb Air Oil Separator Black Red 2002 2007 Subaru WRX 2004 2014 STI The Cobb Air Oil Separator (AOS) in black and red for the 2002 2007 Subaru WRX installs in the crankcase ventilation system to remove oil vapor and droplets from PCV gases before they enter the intake system. The AOS keeps the intake manifold, throttle body, and intercooler free of oil accumulation on turbocharged Subaru applications. DETAILS Platform: 2002 2007 Subaru WRX, 2004 2014