HKS 71008-AF012 Super SQV4 BOV for 08-14 Subaru WRX & 05-09 Legacy GT

Vehicle Fitment

• 2008-2014 Subaru WRX (Turbo, AWD)
• 2005-2009 Subaru Legacy GT (2.5L Turbo, AWD)

Features

• HKS Super Sequential Blow-Off Valve 4 (SSQV4) design
• Dual-stage pull-type relief valve for stable boost control
• High-quality aluminum die-cast valve body
• Triple fin design for distinct turbo sound
• Improved throttle response and compressor protection
• Includes vacuum line filter and mounting fittings
• Designed for precise operation from low to high boost
• Direct bolt-on fitment to specified Subaru models

Specifications

• Part Number: 71008-AF012
• Type: Sequential Blow-Off Valve (BOV) Kit
• Material: Aluminum die-cast body with metal valve internals
• Fitment: Subaru turbocharged AWD platforms listed above
• Operation: Pull-type sequential valve for consistent boost relief
• Mounting: Vehicle-specific flange and hardware included
• Boost Range: Suitable for stock and modified turbo systems
• California (CARB) Legal: Not CARB legal (vent-to-atmosphere) in some regions

Included Components

• 1x HKS Super SQV4 blow-off valve assembly
• 1x Vehicle-specific mounting flange and bracket
• Hoses, clamps, and T-fittings for installation
• Vacuum line filter and zip ties
• Installation instructions

Product Description

The HKS 71008-AF012 Super SQV4 Blow-Off Valve Kit is an engineered performance upgrade for turbocharged Subaru Impreza WRX and Legacy GT models. Utilizing the advanced sequential dual-valve architecture, the SSQV4 design ensures smooth and reliable boost pressure relief across a wide range of driving conditions - from daily street use to spirited performance driving. The pull-type valve structure prevents leaks under load, helping maintain consistent boost and reducing compressor surge when the throttle is lifted.

Constructed from durable aluminum die-cast materials and featuring HKS's distinctive triple fin design, this blow-off valve delivers both functional performance and a characteristic turbo sound. The kit includes all necessary vehicle-specific fittings and hardware for direct installation, making it ideal for enthusiasts upgrading their turbo systems on the supported 2008-2014 WRX and 2005-2009 Legacy GT platforms. Always verify local emissions legality and fitment for your specific vehicle year and trim before installation.