LF Bypass Valve (712665) - Subaru WRX / STi / Forester XT
The COBB LF BPV is a compact, lightweight bypass valve capable of holding very high boost pressure without leaking. Featuring an updated design that reduces control volume by 30%, it allows for extremely fast venting of boost when actuated. Its low-weight components have less inertia to respond faster than heavier valves, while a Banjo-fitting vacuum port provides 360-degree adjustability for simplified hose routing and fewer potential leak points. Additionally, it includes a piston o-ring seal with double the diameter of previous designs for increased compression and reduced wear, alongside an updated spring and seal design that yields a 60% increase in clamping force at peak boost.
Emissions Note: This part is 50-state legal for sale and use on emission-controlled vehicles under CARB EO numbers D-660-9, D-660-36, and D-660-83.
Features
- Compact and lightweight bypass valve engineered to hold high boost pressure without leaks
- 30% reduction in control volume for extremely fast boost venting
- Banjo-fitting vacuum port delivers 360-degree hose routing adjustability
- Piston o-ring seal with twice the diameter for greater compression and lower wear
- Provides a 60% increase in clamping force at peak boost while maintaining stable idle and transient behavior
Fitment
- 2002 Subaru Impreza WRX Sedan AT USDM
- 2002 Subaru Impreza WRX Sedan MT USDM
- 2002 Subaru Impreza WRX Wagon AT USDM
- 2002 Subaru Impreza WRX Wagon MT USDM
- 2003 Subaru Impreza WRX Sedan AT USDM
- 2003 Subaru Impreza WRX Sedan MT USDM
- 2003 Subaru Impreza WRX Wagon AT USDM
- 2003 Subaru Impreza WRX Wagon MT USDM
- 2004 Subaru Impreza STi MT USDM
- 2004 Subaru Impreza WRX Sedan AT USDM
- 2004 Subaru Impreza WRX Sedan MT USDM
- 2004 Subaru Impreza WRX Wagon AT USDM
- 2004 Subaru Impreza WRX Wagon MT USDM
- 2005 Subaru Impreza STi MT USDM
- 2005 Subaru Impreza WRX Sedan AT USDM
- 2005 Subaru Impreza WRX Sedan MT USDM
- 2005 Subaru Impreza WRX Wagon AT USDM
- 2005 Subaru Impreza WRX Wagon MT USDM
- 2006 Subaru Impreza STi MT USDM
- 2006 Subaru Impreza WRX Sedan AT USDM
- 2006 Subaru Impreza WRX Sedan MT USDM
- 2006 Subaru Impreza WRX Wagon AT USDM
- 2006 Subaru Impreza WRX Wagon MT USDM
- 2007 Subaru Impreza STi MT USDM
- 2007 Subaru Impreza WRX Sedan AT USDM
- 2007 Subaru Impreza WRX Sedan MT USDM
- 2007 Subaru Impreza WRX Wagon AT USDM
- 2007 Subaru Impreza WRX Wagon MT USDM
- 2008 Subaru Impreza STi Hatch MT ADM
- 2008 Subaru Impreza STi Hatch MT USDM
- 2009 Subaru Impreza STi Hatch MT ADM
- 2009 Subaru Impreza STi Hatch MT USDM
- 2010 Subaru Impreza STi Hatch MT ADM
- 2010 Subaru Impreza STi Hatch MT USDM
- 2011 Subaru Impreza STI Sedan MT ADM
- 2011 Subaru Impreza STi Hatch MT ADM
- 2011 Subaru Impreza STi Hatch MT USDM
- 2011 Subaru Impreza STi Sedan MT USDM
- 2012 Subaru Impreza STI Sedan MT ADM
- 2012 Subaru Impreza STi Hatch MT ADM
- 2012 Subaru Impreza STi Hatch MT USDM
- 2012 Subaru Impreza STi Sedan MT USDM
- 2013 Subaru Impreza STI Sedan MT ADM
- 2013 Subaru Impreza STi Hatch MT ADM
- 2013 Subaru Impreza STi Hatch MT USDM
- 2013 Subaru Impreza STi Sedan MT USDM
- 2014 Subaru Impreza STI Sedan MT ADM
- 2014 Subaru Impreza STi Hatch MT ADM
- 2014 Subaru Impreza STi Hatch MT USDM
- 2014 Subaru Impreza STi Sedan MT USDM
- 2006 Subaru Forester XT AT USDM
- 2006 Subaru Forester XT MT USDM
- 2007 Subaru Forester XT AT USDM
- 2007 Subaru Forester XT MT USDM
- 2008 Subaru Forester XT AT USDM
- 2008 Subaru Forester XT MT USDM
- 2015 Subaru WRX STI Sedan MT ADM
- 2015 Subaru WRX STI Sedan MT USDM
- 2016 Subaru WRX STI Sedan MT ADM
- 2016 Subaru WRX STI Sedan MT USDM
- 2017 Subaru WRX STI Sedan MT ADM
- 2017 Subaru WRX STI Sedan MT USDM
- 2018 Subaru WRX STI Sedan MT ADM
- 2018 Subaru WRX STI Sedan MT USDM
- 2018 Subaru WRX STI Type RA Sedan MT USDM
- 2019 Subaru WRX STI S209 Sedan MT USDM
- 2019 Subaru WRX STI Sedan MT ADM
- 2019 Subaru WRX STI Sedan MT USDM
- 2020 Subaru WRX STI Sedan MT ADM
- 2020 Subaru WRX STI Sedan MT USDM
- 2021 Subaru WRX STI Sedan MT ADM
- 2021 Subaru WRX STI Sedan MT USDM
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
