Turbosmart Plumb Back BOV Black WRX (2002-2007) STI (2004-2014) BMW These high tech progressive springs

These high tech progressive springs retain superior ride comfort

This regulator allows you to adjust fuel pressure depending on what you need for your specific application

Included with each Kompact VAG II Dual Port kit:

In comparison to the H&R Sport Cup Kit

This lightweight rotomolded intake scoop is black for a stealth appearance

Turbosmart Plumb Back BOV Black WRX (2002-2007) STI (2004-2014) BMW These high tech progressive springsThe Plumb Back for the Subaru WRX STI Forester is a high performance fully recirculating BOV, all released pressure is vented back into the intake system. Ideal for cars with sensitive AF meter systems and off road applications as the fully sealed design of the Plumb Back prevents any foreign matter from entering the system. This plumb back comes with a Subaru flange making installation easy on your Subaru WRX STI. FITMENT: Subaru STI 2004 2014 Subaru