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  • Cobb [06 - 07 WRX, 04 - 07 STI, 04 - 08 FXT] Air Oil Separator - JDMuscleAir Oil Separatorscobb811615
  • Cobb [06 - 07 WRX, 04 - 07 STI, 04 - 08 FXT] Air Oil Separator - JDMuscleAir Oil Separatorscobb811615
  • Cobb [06 - 07 WRX, 04 - 07 STI, 04 - 08 FXT] Air Oil Separator - JDMuscleAir Oil Separatorscobb811615
  • Cobb [06 - 07 WRX, 04 - 07 STI, 04 - 08 FXT] Air Oil Separator - JDMuscleAir Oil Separatorscobb811615

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Air/Oil Separator

Fits: 02-07 WRX, 04-07 STI, 04-08 Forester XT

$56500
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COBB Tuning Air/Oil Separator
Fits: 02-07 WRX, 04-07 STI, 04-08 Forester XT
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Fitment

Please Note: COBB official product page for product code 811615 confirms USDM applications for 2002-2007 Subaru WRX (sedan and wagon, automatic and manual), 2004-2007 Subaru STI (manual), and 2004-2008 Subaru Forester XT (automatic and manual). The separator was developed with IAG Performance and uses an approximately 1-liter cast-aluminum body, integrated ORB ports, coolant routing, and dedicated engine-vent connections.
  • 2004-2008 Subaru | Forester XT
  • 2002–2007 Subaru | WRX
  • 2004-2007 Subaru | WRX STI

Description

The COBB Air/Oil Separator, developed with IAG Performance, helps keep oil vapors out of the intake by separating crankcase oil from vented air across the Subaru EJ engine ventilation system.

  • Exact applications: 2002-2007 Subaru WRX, 2004-2007 Subaru STI, and 2004-2008 Subaru Forester XT in confirmed USDM applications
  • Approximately 1-liter holding capacity
  • Integrated ORB ports and compact cast-aluminum body
  • Black powdercoat finish with heat shielding for breather and oil-return lines
  • Coolant bleeder valve and coolant routing to limit water accumulation
  • Three dedicated engine-vent connections for effective crankcase pressure evacuation
  • Laser-etched COBB logo
  • 50-state legal when used according to the manufacturer application guide
  • References: COBB official product page, CARB EO D-660-25, and CARB EO D-660-45

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