- Instant discount: $14.55 = $82.45
IIR Pay Customers get $4.12 in points
2002-2007 Subaru WRX
2004-2007 Subaru STI
In the Box:
Perrin's Afta-MAF hose replaces the stock corrugated rubber hose between the turbo inlet and factory air box. Perrin's hose will allow for improved airflow due to higher internal volume and smoother airflow due to the smooth interior. The Perrin WRX MAF hose is designed for use with the stock air box, but will work with any intake designed to use the stock rubber hose.