IAG Air Oil Separator AOS Black (IAG-ENG-7186BK) | Subaru WRX 2008-2014 / STI 2008-2021 / Forester XT 2009-2013 / Legacy GT 2005-2009 / Outback XT 2005-2009

The IAG Air Oil Separator is designed to reduce oil ingestion and improve long-term engine reliability by separating engine blow-by vapors before they reach your intake system. This high-quality AOS is engineered for demanding Subaru applications and delivers consistent performance in both street and track environments.

KEY FEATURES

• Reduces oil buildup inside the intake system
• Helps prevent detonation caused by oil vapor ingestion
• Engineered baffling ensures consistent separation efficiency
• Constructed from durable materials for long service life
• Designed for seamless integration with factory connections

VEHICLE FITMENT

• Subaru WRX 2008-2014
• Subaru STI 2008-2021
• Subaru Forester XT 2009-2013
• Subaru Legacy GT 2005-2009
• Subaru Outback XT 2005-2009

IAG designs and manufactures high-quality components built to withstand the demands of high-performance Subaru engines.