HKS Suction Return Kit 2008-2021 STI

Here, you are looking at the HKS Super SQV4 Blow-Off Valve w/ Return Kit for the 2008-2021 STI.

Feature:

• With Suction Return Kit, blow-off air from SUPER SQV will be returned to suction pipe like stock air bypass valve.

• Although the blow-off sound is not loud, the reflected intake air sound coming out of the air cleaner can be heard.