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HKS Super SQV4 Blow Off Valve Subaru WRX 2002-2007 / STI 2004-2007 / Forester XT 2004-2008


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HKS Super SQV (Sequential Blow Off Valve) uses a unique sequential valve structure and a differential pressure control system, which allows for a broad operating range from low boost to high boost. Its Pull-Type relief design ensures stable operation regardless of the amount of boost pressure. The Super SQV will support new generations of turbocharged vehicles.

This is the grandfather of blow-off valves with its flagship sound that remains to be one of the most effective blow-off valves in the aftermarket.


Pull-type sequential valve structure

New differential pressure control system allows for stable operating ranges from low to high-boost pressures

Comes provided with an OEM-like mounting flange to allow users to have a ready installation


Adjustable: No

Color: Silver

Design: Diaphragm

OEM Replacement: Yes

QTY: 1

Valve Type: Atmospheric or Recirculating

Includes Gasket(s): No

This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

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