Turbosmart Plumb Back BOV Blue WRX (2002-2007) STI (2004-2014) Nissan 30 levels of dampening adjustment

30 levels of dampening adjustment allow fine tune adjustment for street

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Turbosmart Plumb Back BOV Blue WRX (2002-2007) STI (2004-2014) Nissan 30 levels of dampening adjustmentThe 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