IAG Blow Off Valve Adapter For 2002-07 Subaru WRX & 2004-21 STI

IAG Performance Blow Off Valve Adapter For 2002-07 Subaru WRX & 2004-21 STI. The IAG BOV adapter allows you to use your existing OEM factory blow off valve with numerous aftermarket front mount intercooler kits. Measuring 1.375 inch (both inlet and outlet) and featuring a 1/2 inch thick flange you can be assured of a complete seal. Includes new factory gasket.