HKS Super SQV IV Blow-Off Valve - Subaru WRX STI GRB / GRF / GVB / GVF (2008-2019)

Name: WRX STI 08-19 SSQV4 BOV HKS
Brand: HKS
SKU: 71008-AF013
Price: 413 EUR
Availability: InStock

The HKS Super SQV IV is a high-performance blow-off valve developed for the Subaru Impreza WRX STI GRB, GRF, GVB, and GVF (2008-2019). Its advanced sequential pull-type valve design delivers rapid and controlled boost pressure release when the throttle is closed, helping to reduce compressor surge and minimise stress on the turbocharger system. The design also produces the distinctive HKS blow-off valve sound that has become a favourite among performance enthusiasts worldwide.

The blow-off valve features a sequential dual-valve system, where the primary and secondary valves work together to manage boost pressure across a wide operating range. During acceleration, boost pressure helps keep the valve securely closed, reducing the risk of leakage and maintaining stable boost pressure. When the throttle is lifted, the primary valve opens first, and at higher pressure levels the secondary valve is activated to increase discharge capacity. The robust metal valve construction and die-cast aluminium body provide reliable operation and excellent durability, even under demanding turbocharged engine conditions.

The HKS Super SQV IV is supplied with the signature Triple Fin insert, producing the unmistakable HKS discharge sound. Optional sound inserts are also available for enthusiasts who wish to customise the valve's sound characteristics. The vehicle-specific construction ensures OEM-style fitment and direct bolt-on installation, making the HKS Super SQV IV an excellent upgrade for both standard and performance-modified vehicles for street and track use.

Features

Fits the Subaru Impreza WRX STI GRB, GRF, GVB, and GVF (2008–2019).
Genuine HKS Super SQV IV Blow-Off Valve.
Sequential dual-valve system with primary and secondary valves.
Pull-type valve design helps keep the valve securely sealed under boost pressure.
Fast boost pressure release helps reduce compressor surge.
Durable metal valve construction for reliable operation.
Die-cast aluminium body with a premium finish.
Supplied with the Triple Fin insert for the signature HKS blow-off valve sound.
Compatible with optional sound inserts for customised sound characteristics.
Suitable for both standard and performance-modified vehicles.
Vehicle-specific design with OEM-style fitment.
Direct bolt-on installation.
Ideal for street and track use.

Product video

Technical specification

Article nr:

71008-AF013

Manufacture Partnumber:

71008-AF013

In October 1973, two talented and young engineers had a vision; to design and build high performance engines and components that major OE manufacturers could not, or would not, produce. HKS pioneered the Japanese aftermarket industry by delivering a host of exciting new products, including the first commercially available electronic turbo timer and boost controller. Other early products included piggy-back ECUs and sophisticated fuel management tools. HKS was clearly driving performance trends for Japanese vehicles forward!

Today, HKS is one of the world's most well-known brands and the obvious choice for you who builds a JDM car. In the assortment you will find everything from chassis products to exhaust systems and turbo kits. HKS is behind some of the coolest builds and professional drivers in the world, so when you choose HKS, you choose the best.