Perrin [08-14 WRX, 05-09 LGT] Red Blow Off Valve Recirculating Rear Fin Spoilers this overlay fits perfectly around

this overlay fits perfectly around the rear screen

Twenty aluminum acorn lug nuts with extended length and M12 x 1

replacing them together is smart preventive maintenance

Will this work if I still use the mechanical key lock on the passenger door

Perrin [08-14 WRX, 05-09 LGT] Red Blow Off Valve Recirculating Rear Fin Spoilers this overlay fits perfectly aroundAdjustable relief pressure and flow control makes fine tuning on the fly simple and quick with the PERRIN Blow Off Valve. This is the PERRIN Recirculating Blow Off Valve. If you have performed modifications that have increased boost, horsepower, and overall performance then the PERRIN Blow Off Valve will respond faster than the OEM unit relieve excess pressure. This PERRIN Blow Off Valve cap, piston, and flange feature a CNC machined, 6061 Billet