Perrin Recirculating BOV for 02-14WRX/04+STi Works Bell Compatible with stock and aftermarket

Compatible with stock and aftermarket shift knobs

(1) Bolt MB911314

but not all

every Mishimoto silicone hose is constructed from five layers of silicone with heat-resistant embedded fibers to provide unmatched durability

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Perrin Recirculating BOV for 02-14WRX/04+STi Works Bell Compatible with stock and aftermarketVehicle Fitment: 2002 2014 Subaru WRX 2004 2021 Subaru STi Description: Adjustable relief pressure and flow control makes fine tuning on the fly simple and quick with the PERRIN Blow Off Valve. Inefficient factory blow off valves (BOV) can hinder boost response during shifts and can damage your expensive turbo charger. PERRIN offers several choices for owners to choose the best solution to the problem. The PERRIN blow off valve cap, piston & flange