HKS Super SQV4 is a sequential pull-type blow-off valve kit for the 2002-2007 Subaru WRX and 2004-2007 STI with the EJ turbo engine. The kit includes the model-specific adapter to bolt onto the factory intake plumbing. The two-stage piston delivers a sharp release sound and quick recovery and is switchable between atmospheric and recirculating venting.
Specifications
| Type | Sequential blow-off valve kit (Super SQV4) |
| Fitment | Subaru WRX (2002-2007) / STI (2004-2007) - EJ turbo |
| Venting | Switchable atmospheric or recirculating |
| Includes | SQV4 valve and vehicle-specific adapter |
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