What is the primary function of the HKS SUPER SQV 4 Return Kit?

The primary function is to release excess boost pressure from the turbocharger's intake system when the throttle is closed. This protects the turbo from damage caused by backpressure and can improve throttle response.

What components are included in the HKS SUPER SQV 4 RETURN KIT PLUS GXPA16?

This kit comes with the SUPER SQV 4 blow-off valve unit, the GXPA16 adapter, and all the necessary hardware for mounting and installation.

Can this kit be shipped to California?

No, this product is not CARB approved and cannot be shipped to California due to emissions regulations.

HKS SUPER SQV 4 Return Kit Plus GXPA16 71008-AT020

Name: HKS SUPER SQV 4 RETURN KIT PLUS GXPA16
Brand: HKS
SKU: hks-hks-super-sqv-4-return-kit-plus-gxpa16-t14-536250
Price: 785.10 USD
Availability: BackOrder

HKS SUPER SQV 4 RETURN KIT PLUS GXPA16

$785.10

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 SQV 4 RETURN KIT PLUS GXPA16

Key Features

This kit includes the HKS SUPER SQV 4 blow-off valve, the GXPA16 adapter, and all required mounting hardware.
The SUPER SQV features a unique sequential valve structure and differential pressure control for reliable operation.
It is designed to release excess boost pressure, protecting the turbocharger from backpressure damage.
The die-cast aluminum body offers a strong yet lightweight construction.
The included GXPA16 adapter facilitates integration with specific engine setups.
This product is not CARB approved and cannot be shipped to California.

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Product Details

This HKS SUPER SQV 4 Return Kit Plus GXPA16 includes the SUPER SQV (Super Sequential Blow-Off Valve) unit, the GXPA16 adapter, and all necessary mounting hardware. The SUPER SQV is a popular choice for turbocharged vehicles, designed to release excess boost pressure from the intake system when you lift off the throttle. This helps protect your turbocharger from damage caused by backpressure and can also lead to a more responsive throttle feel.

The SUPER SQV uses a unique sequential valve structure and a differential pressure control system. This advanced design allows for a strong spring return, ensuring the valve closes firmly and prevents boost leaks. The kit also includes the GXPA16 adapter, which is specifically designed to integrate the SUPER SQV with certain engine configurations, making installation more straightforward. The construction uses die-cast aluminum for the main body, offering a good balance of strength and light weight. All components are made to HKS's standards for reliable performance.

When installing this kit, it's important to note that it is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for specific details on connecting the vacuum lines and mounting the valve securely to your vehicle's intake piping. Proper installation is key to ensuring the blow-off valve functions correctly and protects your turbocharger.