HKS Super SQV4 Black Edition Blow Off Valve – Universal
Upgrade your turbocharged vehicle with the HKS Super SQV4 Black Edition Blow Off Valve — a universal sequential blow off valve designed to deliver stable operation, reliable boost control and the signature HKS discharge sound.
Finished in the Black Edition colourway, this version features a glossy black body and upper housing with a grainy crystal black funnel, giving it a cleaner, more subtle appearance than the standard polished style.
Designed for Turbocharged Performance Vehicles
The HKS Super SQV has been one of the most recognisable blow off valves in the performance scene for years, known for its sharp sequential sound and dependable operation across a wide range of boost pressures.
The SQV4 uses a pull-type sequential valve structure with a differential pressure control system, allowing stable operation from low boost through to high boost without the need for vehicle-specific spring preload adjustment.
Sequential Valve Design
The HKS Super SQV4 uses a dual valve structure for consistent blow off operation.
At lower boost levels, the primary valve opens first for initial pressure release. At higher boost levels, the secondary valve also opens to allow greater discharge volume.
This sequential design helps deliver fast response and stable operation across different boost ranges.
Key Features
- HKS Super SQV4 Blow Off Valve
- Black Edition finish
- Part number: 71008-AK005
- Universal application
- Sequential blow off valve design
- Pull-type valve structure
- Differential pressure control system
- Stable operation across a wide range of boost pressures
- Designed to prevent boost leakage
- Signature HKS blow off valve sound
- Glossy black body and upper housing
- Grainy crystal black funnel
- Suitable for a wide range of turbocharged vehicles
- Professional installation recommended
Universal Fitment
This is a universal blow off valve assembly and is not a direct bolt-on kit for every vehicle.
Additional installation hardware may be required depending on the application, such as weld-on flanges, adaptor flanges, recirculation fittings, vacuum hose or vehicle-specific installation kits.
Included Components
Typical kit contents include:
- HKS Super SQV4 Black Edition blow off valve
- C-clip
- Zip ties
- Vacuum T-pieces
- Vacuum line filter
Final included hardware should be confirmed before ordering.
Fitment
Product: HKS Super SQV4 Black Edition Blow Off Valve
Part Number: 71008-AK005
Application: Universal turbocharged vehicle application
Installation Type: Universal / adaptor required depending on vehicle
Final compatibility must be confirmed before ordering using the vehicle make, model, engine, turbo setup and existing blow off valve or bypass valve configuration.
Important Notes
- This is a universal blow off valve, not a vehicle-specific direct-fit kit.
- Additional adaptors, flanges or fitting hardware may be required.
- Some vehicles may require tuning or ECU consideration when changing blow off valve configuration.
- Vent-to-atmosphere blow off valves may not be legal for road use in all regions.
- Professional installation is recommended.
- Final compatibility must be confirmed before ordering.
- Product images may be generic and used for illustration purposes only.
- Available through Empire Performance.
Why Choose HKS?
HKS is one of Japan’s most recognised performance brands, known for high-quality turbo, intake, exhaust, engine and electronic performance components.
For owners wanting the classic HKS sequential blow off valve sound with a cleaner Black Edition finish, the Super SQV4 is one of the most iconic options available.
Why Choose Empire Performance?
Empire Performance supplies quality performance parts for Japanese and enthusiast vehicles, with a focus on correct fitment, trusted brands and practical product support.
For customers wanting an HKS blow off valve upgrade, Empire Performance can assist with compatibility checks and supporting hardware requirements