Cobb 06-07 Mazdaspeed6 / 08-14 Subaru WRX / 09-13 FXT LF Bypass Valve
Subaru/Mitsubishi LF Bypass Valve by Cobb Tuning The COBB LF BPV is a compact and lightweight by-pass valve that is capable of holding very high boost pressure without leaking.
Its updated design reduces control volume by 30% allowing for extremely fast venting of boost when actuated.
Innovative engineering and precision manufacturing result in a compact package able to fit in the confines of a tight engine bay.
Features
- Moving parts in the LF BPV have less inertia and can respond faster than heavier components in other bypass valves
- Uses a Banjo-fitting vacuum port which adds 360 degree adjustability of hose routing
- Includes a piston o-ring seal that is twice the diameter of the old design allowing more seal compression and reduced wear
- Spring & seal design increase clamping force by 60% at peak boost while maintaining similar operation at idle and transient loads
Applications
- 2008 – 2014 Subaru Impreza WRX
- 2009 – 2013 Subaru Forester XT
- 2005 – 2009 Subaru Legacy GT
- 2005 – 2009 Subaru Outback XT
- 2007 – 2013 Mazda Mazdaspeed3
- 2006 – 2007 Mazda Mazdaspeed6
What’s Included
- 1 – Cobb LF BPV
- 1 – Hose
- 1 – Gasket
Product Details
- Manufacturer part number: 724665
- COBB Tuning Products, LLC warrants to the original retail purchaser that all components manufactured by COBB Tuning, or sold under the COBB brand from an Authorized COBB Tuning dealer, hold a 12-month limited warranty from the date of purchase against defects in materials and workmanship






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