COBB LF BPV (745670) | Subaru WRX 2015-2021 / Forester XT 2014-2018

The COBB LF BPV is a direct-fit bypass valve solution for late-model turbocharged Subarus, designed to provide stable boost control and improved reliability over the factory plastic unit. By maintaining a recirculated airflow path and consistent valve operation, it helps reduce compressor surge, supports higher boost levels with tuning, and keeps drivability smooth for both daily commuting and spirited driving.

KEY FEATURES

• Direct replacement for the factory bypass valve on supported Subaru models
• Recirculated design maintains smooth drivability and MAF-based tuning stability
• Improved sealing and response for more consistent boost control
• Durable construction engineered to handle increased boost pressure
• Designed to work seamlessly with COBB off-the-shelf and custom calibrations

TECHNICAL SPECIFICATIONS

• CNC-machined body for precise fitment and long-term durability
• Spring and piston assembly calibrated for stock and tuned boost levels
• Engineered to minimize compressor surge during rapid throttle transitions
• Compatible with OEM-style recirculation plumbing and intercooler hardware
• Tested for thermal and pressure cycling to ensure consistent performance

VEHICLE FITMENT

• Subaru WRX 2015-2021
• Subaru Forester XT 2014-2018

COBB delivers proven, data-driven performance solutions engineered to optimize your Subaru with unmatched precision and reliability.