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  • Cobb Tuning LF Bypass Valve | 15-20 Subaru WRX / 14-18 Forester XT (745670)
  • Cobb Tuning LF Bypass Valve | 15-20 Subaru WRX / 14-18 Forester XT (745670)
  • Cobb Tuning LF Bypass Valve | 15-20 Subaru WRX / 14-18 Forester XT (745670)
  • Cobb Tuning LF Bypass Valve | 15-20 Subaru WRX / 14-18 Forester XT (745670)
  • Cobb Tuning LF Bypass Valve | 15-20 Subaru WRX / 14-18 Forester XT (745670)
  • Cobb Tuning LF Bypass Valve | 15-20 Subaru WRX / 14-18 Forester XT (745670)

    MAP price match guarantee Unbeatable Price Guarantee

    Cobb Tuning

    Cobb Tuning LF Bypass Valve | 15-20 Subaru WRX / 14-18 Forester XT

    PART# COB 745670
    We Price Match!

    Contact us to ensure you're getting the right part for your car at the absolute best pricing on earth!

    Email - sales@maperformance.com
    Phone 1(888)627-3736



    $ 325.00

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      +1-888-627-3736
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    15-20 WRX / 14-18 Forester XT LF Bypass Valve by Cobb Tuning

    The C.A.R.B. Certified 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. Due to the low weight of the components, the moving parts in the LF BPV have less inertia and can respond faster than heavier components in other bypass valves.

    This updated design uses a Banjo-fitting vacuum port which provides 360 degree adjustability of hose routing. This results in a simpler install and less potential leak points than the NPT ports. This new design also includes a piston o-ring seal that is twice the diameter of the old design allowing more seal compression and reduced wear. Adjustability of the spring seat is no longer needed due to the updated spring and seal design which provides a 60% increase in clamping force at peak boost while maintaining similar operation at idle and transient loads.

    Features

    • 100% Billet Aluminum Construction
    • 100% O-Ring Sealing
    • Compact and very lightweight bypass valve

    Benefits

    • 100% Rebuildable if there ever is an o-ring failure
    • Reduces control volume by 30% allowing for extremely fast venting of boost when actuated
    • Holds high levels of boost without leaks

    Applications

    • 2015-2020 Subaru WRX
    • 2014-2018 Subaru Forester XT

    What's In The Box?

    • 1 - LF Bypass Valve
    • 1 - 6mm Vacuum Hose (3ft)
    • Zip Ties

    References

    Warranty

    • Manufacturer Standard Warranty.

    15-20 WRX / 14-18 Forester XT LF Bypass Valve by Cobb Tuning

    The C.A.R.B. Certified 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. Due to the low weight of the components, the moving parts in the LF BPV have less inertia and can respond faster than heavier components in other bypass valves.

    This updated design uses a Banjo-fitting vacuum port which provides 360 degree adjustability of hose routing. This results in a simpler install and less potential leak points than the NPT ports. This new design also includes a piston o-ring seal that is twice the diameter of the old design allowing more seal compression and reduced wear. Adjustability of the spring seat is no longer needed due to the updated spring and seal design which provides a 60% increase in clamping force at peak boost while maintaining similar operation at idle and transient loads.

    Features

    • 100% Billet Aluminum Construction
    • 100% O-Ring Sealing
    • Compact and very lightweight bypass valve

    Benefits

    • 100% Rebuildable if there ever is an o-ring failure
    • Reduces control volume by 30% allowing for extremely fast venting of boost when actuated
    • Holds high levels of boost without leaks

    Applications

    • 2015-2020 Subaru WRX
    • 2014-2018 Subaru Forester XT

    What's In The Box?

    • 1 - LF Bypass Valve
    • 1 - 6mm Vacuum Hose (3ft)
    • Zip Ties

    References

    Warranty

    • Manufacturer Standard Warranty.

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    MAP Limited Lifetime Warranty

    1.) All MAPerformance in-house fabricated parts include a Limited Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferrable. If the product fails it would need to be determined by MAPerformance that it is due to manufacturing defects in materials or workmanship.

    2.) This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. MAPerformance will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.). Warranty claims must be submitted to MAPerformance for review.

    3.) You must create a support ticket to acquire your return authorization number prior to returning the product.

    4.) Warranty claims will not be honored if the product was not purchased through an approved dealer.

    For warranty evaluation please create a support ticket via this form here.

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