Perrin - Subaru 02-07 WRX / 04-21 STI - Recirculating Blow Off Valve kit (Red) subaru-legacy-2012 It joins the stock airbox

It joins the stock airbox (or optional COBB SF Intake) to the turbo inlet tube by replacing the stock corrugated rubber piece

This low-friction material also helps make the BOV more responsive than any previous Type 5 BOV

0mm main pipe thickness

The Pro Racer fits like a glove

Perrin - Subaru 02-07 WRX / 04-21 STI - Recirculating Blow Off Valve kit (Red) subaru-legacy-2012 It joins the stock airboxOVERVIEW Adjustable relief pressure and flow control make fine tuning on the fly simple and quick with the PERRIN BOV BPV. HIGH FLOW With large 1. 225" inlets and outlets, the PERRIN Blow Off Valve is sized perfectly to relieve any amount of boost pressure without fear of compressor surge. Dont be fooled by giant oversized blow off valves, these inlet and outlet sizes were chosen to ensure the perfect balance of flow and to maintain the boost in your