What is the main function of a blow-off valve like the SUPER SQV4?

A blow-off valve releases excess boost pressure from the intake system when the throttle is closed suddenly, such as during gear shifts. This prevents compressor surge, which can damage the turbocharger and lead to a loss of boost.

What makes the HKS SUPER SQV4 Black Edition stand out?

The Black Edition features a special anodized black finish for a stealthy appearance. Its unique asymmetrical valve and dual spring design are known for reliable performance and a distinctive sound.

Can this blow-off valve be used on any turbocharged vehicle?

While designed for turbocharged applications, specific fitment varies by vehicle. It's important to check manufacturer fitment data to ensure compatibility with your car's turbo system. This unit is also not CARB approved.

HKS SUPER SQV4 FL5 Blow Off Valve Black Edition 71008-KH012B

Name: HKS SUPER SQV4 FL5 - Black Edition
Brand: HKS
SKU: hks-hks-super-sqv4-fl5-black-edition-t14-862224
Price: 472.32 USD
Availability: BackOrder

HKS SUPER SQV4 FL5 - Black Edition

$472.32

On Backorder — Expected to ship by Jun 19, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

HKS SUPER SQV4 FL5 - Black Edition Blow Off Valve. This well-built unit helps manage boost pressure for improved turbo response.

Key Features

This kit includes the HKS SUPER SQV4 FL5 Black Edition blow-off valve and installation components.
Features a unique, patented asymmetrical valve structure for effective boost pressure management.
The dual spring system ensures a tight seal under constant boost and quick release when needed.
The Black Edition has an anodized black finish for a stealthy, performance look.
Helps prevent compressor surge and can improve turbo response.
Not CARB approved; cannot ship to California.

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Product Details

In this kit, you get the HKS SUPER SQV4 FL5 Black Edition blow-off valve, along with the necessary components for installation. This unit is designed to help manage boost pressure in turbocharged vehicles, releasing excess pressure when you lift off the throttle. This action helps to prevent compressor surge and can lead to improved turbo response and longevity.

The SUPER SQV4 features a unique, patented asymmetrical valve structure and a dual spring system. This design ensures a tight seal against constant boost pressure while also allowing for quick and smooth release when needed. The Black Edition sports a sleek, anodized black finish, giving your engine bay a clean, performance-oriented look. It's a well-made piece that many enthusiasts choose for its distinctive sound and reliable performance.

Please note that this blow-off valve is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for specific details on fitting this to your vehicle.