HKS Super SQV IV Recirculating Blow-Off Valve (Silver) - Subaru Levorg / WRX FA20 & FB16
The HKS Super SQV IV (Silver) is a high-performance recirculating blow-off valve developed for selected Subaru Levorg and Subaru WRX models equipped with the FA20 or FB16 engine. Designed to work with compatible HKS intake and charge-air systems, the kit includes a complete recirculation adapter kit that routes discharged boost pressure back into the intake system. This configuration is particularly suitable for MAF-equipped vehicles and may help maintain stable air-fuel ratios, provide more consistent fuel control, and improve drivability.
Its advanced sequential dual-valve system, combined with the proven pull-type valve design, provides rapid and controlled boost pressure release, helping reduce compressor surge and minimise stress on the turbocharger. Despite its recirculating configuration, the Super SQV IV still produces the signature high-frequency HKS blow-off valve sound, while offering quieter operation than atmospheric venting. During HKS in-house testing, the valve demonstrated stable operation without engine stalling.
The vehicle-specific design provides direct bolt-on installation and OEM-style fitment, while the valve's position beside the factory air cleaner housing gives the engine bay a clean, motorsport-inspired appearance. The HKS Super SQV IV is an excellent upgrade for both standard vehicles and modified turbocharged builds, combining reliable performance, improved drivability, and the renowned quality of HKS.
Features
- Designed for selected Subaru Levorg and Subaru WRX models with FA20 and FB16 engines.
- Genuine HKS Super SQV IV Recirculating Blow-Off Valve (Silver).
- Complete recirculation adapter kit included.
- Routes discharged boost pressure back into the intake system.
- Helps improve drivability.
- Particularly suitable for MAF-equipped vehicles.
- Sequential dual-valve system for rapid and controlled boost pressure release.
- Pull-type valve design helps keep the valve securely sealed under boost.
- Helps reduce compressor surge and minimise stress on the turbocharger.
- Produces the signature high-frequency HKS blow-off valve sound with quieter operation than atmospheric venting.
- Direct bolt-on installation with OEM-style fitment.
- Suitable for street and track use.
