Boomba Recirculating Bypass Valve Subaru STI 2004-2021 - Red | 001000220200 vendor_DBA a 170-degree thermostat helps to

a 170-degree thermostat helps to maintain a lower operating temperature in the engine

this mounting solution attaches to the factory pillar effortlessly by utilizing the included mounting hardware

while the Power Steering Rack will improve the steering response of your vehicle

and stainless steel pins

2008-2014 STI (w/ Aftermarket Top Feed Fuel Rails)

Boomba Recirculating Bypass Valve Subaru STI 2004-2021 - Red | 001000220200 vendor_DBA a 170-degree thermostat helps toFitment Information: 2004 2021 Subaru STI 2002 2007 Subaru WRX Features: The Boomba Racing high performance recirculating BPV has been designed to be a replacement for the OEM bypass valve and is precision machined out of aircraft grade billet aluminum. It features an internal brass piston design and is pressure tested to withstand over 70psi, allowing it to compliment even the most aggressive turbo builds. Higher spring pre load allows for more boost