Seller notes

Part # PSP-INT-401RD / RED finish 2002-2007 WRXYes2004-2021 STiYes2004-2008 Forester XTYes SMOOTHER AIR FLOW TO TURBOThe PERRIN inlet hose is perfectly smooth on the inside and has a significantly larger internal diameter than the OEM part. The increased air flow by removing the pleats found in the OEM hose makes more horsepower, decreases turbo spool time, and improves acceleration. SS INTERNAL SUPPORT WIREThe PERRIN inlet hose is reinforced with a stainless steel support wire that is embedded ...

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