LF Bypass Valve (745670) - 14-18 Forester XT / 15-21 WRX
Hold high boost pressures without leaking and enjoy lightning-fast response with the updated COBB LF Bypass Valve. Designed to be compact, lightweight, and incredibly reliable, this valve features a 30% reduction in control volume for extremely fast boost venting. It utilizes an innovative 360-degree adjustable Banjo-fitting vacuum port, a doubled-diameter piston o-ring seal for superior compression and reduced wear, and an updated yellow internal spring that delivers a 60% increase in clamping force at peak boost while maintaining smooth operation at idle and transient loads.
Emissions Note: This part is 50-state legal for sale and use on emission-controlled vehicles under CARB EO numbers D-660-36 and D-660-83.
Features
- Compact, lightweight construction fits easily in tight engine bays
- 30% reduction in control volume for ultra-fast boost venting
- 360-degree adjustable Banjo-fitting vacuum port for clean installation
- Upgraded piston o-ring seal provides double the sealing surface area and reduced wear
- Updated yellow internal spring providing a 60% increase in peak boost clamping force
Fitment
- 2014 Subaru Forester XT CVT USDM
- 2015 Subaru Forester XT CVT USDM
- 2016 Subaru Forester XT CVT USDM
- 2017 Subaru Forester XT CVT USDM
- 2018 Subaru Forester XT CVT USDM
- 2015 Subaru WRX Sedan CVT USDM
- 2015 Subaru WRX Sedan MT ADM
- 2015 Subaru WRX Sedan MT USDM
- 2016 Subaru WRX Sedan CVT USDM
- 2016 Subaru WRX Sedan MT ADM
- 2016 Subaru WRX Sedan MT USDM
- 2017 Subaru WRX Sedan CVT USDM
- 2017 Subaru WRX Sedan MT ADM
- 2017 Subaru WRX Sedan MT USDM
- 2018 Subaru WRX Sedan CVT USDM
- 2018 Subaru WRX Sedan MT ADM
- 2018 Subaru WRX Sedan MT USDM
- 2019 Subaru WRX Sedan CVT USDM
- 2019 Subaru WRX Sedan MT ADM
- 2019 Subaru WRX Sedan MT USDM
- 2020 Subaru WRX Sedan CVT USDM
- 2020 Subaru WRX Sedan MT ADM
- 2020 Subaru WRX Sedan MT USDM
- 2021 Subaru WRX Sedan CVT USDM
- 2021 Subaru WRX Sedan MT ADM
- 2021 Subaru WRX Sedan MT USDM
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
