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Cobb LF By-Pass Valve for 2014-2018 Subaru Forester XT & 2015-2018 WRX (745670)

$405.00

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Cobb LF By-Pass Valve for 2014-2018 Subaru Forester XT & 2015-2018 WRX (745670)

$405.00

$405.00

Fits 2014-2018 Subaru Forester XT and 2015-2018 Subaru WRX.

The Cobb LF (Lightweight/Fast) By-Pass Valve is a precision-engineered performance upgrade designed to replace the factory plastic unit. Where the original equipment can often leak boost or respond sluggishly, the LF BPV utilizes a fast-acting piston design to ensure immediate response and reliable boost pressure retention. This component is essential for maintaining turbocharger efficiency and improving overall throttle response during gear changes and deceleration.

CNC machined for exact tolerances, this valve bolts directly to the factory mounting locations and maintains the stock recirculation configuration. This ensures that metered air stays within the system, preventing the stalling or rich-running conditions often associated with atmosphere-venting valves. It is a robust solution for both stock and modified vehicles looking to improve drivetrain reliability.

  • CNC machined aluminum construction for superior durability
  • Lightweight, fast-acting piston improves turbo response
  • Direct bolt-on replacement for the OEM plastic bypass valve
  • Recirculating design maintains correct MAF sensor readings and drivability
  • Manufacturer Part Number: 745670

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