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COBB Tuning

LF Bypass Valve

Fits: 08-14 WRX, 09-13 Forester XT, 05-09 Legacy GT/Outback XT, 07-13 Mazdaspeed3, 06-07 Mazdaspeed6

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Pay over time available · Est. $12.66/payment
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Pay over time available · Est. $12.66/payment
ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

COBB Tuning LF Bypass Valve
Fits: 08-14 WRX, 09-13 Forester XT, 05-09 Legacy GT/Outback XT, 07-13 Mazdaspeed3, 06-07 Mazdaspeed6

Fitment

  • 2007–2013 Mazda | Mazdaspeed3
  • 2008–2014 Subaru | WRX
  • 2005-2009 Subaru | Legacy GT
  • 2009-2013 Subaru | Forester XT
  • 2006-2007 Mazda | Mazdaspeed6

Description

The COBB LF Bypass Valve is a compact, lightweight valve engineered to hold high boost pressure without leaking across supported Subaru and Mazda applications. Its updated design reduces control volume for faster venting, uses low-inertia components for quick response, and adds an adjustable banjo vacuum port for clean routing and reliable operation.

• Fits 2008–2014 Subaru WRX
• Fits 2009–2013 Subaru Forester XT
• Fits 2005–2009 Subaru Legacy GT and Outback XT
• Fits 2007–2013 Mazda Mazdaspeed3 and 2006–2007 Mazda Mazdaspeed6
• Compact lightweight construction for tight engine bays
• Holds high boost pressure without leaking
• 360-degree adjustable banjo vacuum port
• Revised piston O-ring, spring, and seal design improve durability and clamping force

References: https://www.cobbtuning.com/newly-designed-cobb-lf-bypass-valve/

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