IAG Performance IAG Replacement 3/8" NPT to 5/8" Barb Hose Fitting.

The IAG Performance replacement 3/8" NPT to 5/8" aluminum barb hose fitting is designed to fit the 2015-20 Subaru WRX with IAG Street Series or Competition Series air oil separator. The fitting ties the AOS to the PCV system. Direct replacement Y Connector for IAG AOS part numbers: