Intended for the EJ257 engines of the Subaru Impreza STI 08+, this HKS Super SQV4 blow off valve is without doubt one of the most impressive on the market, whether it be for its finish, its sound or its efficiency. Featuring a unique sequential architecture coupled with an internal mechanical pressure control system, this HKS open dump valve is capable of handling any pressure without the need of any adjustment. Offering a sound that is both unique and aggressive, the SSQV4 by HKS is recognised as the most reactive dump valve on the market, offering an exceptional response time and making it one of the most installed in the world on Japanese cars.
-
Direct mounting
Silver finish
Sequential structure
Aggressive sound
Mounting kit included
Assembly instructions included
Made in Japan
| Brand | Model | Type | Version |
|---|---|---|---|
| Subaru | Impreza | GR - 08-11 | STI 300 |
| Subaru | Impreza | GV - 11-14 | STI-300 |
| Subaru | Impreza | VA - 14-18 | STI - 300 |
No reviews yet
*Write your comment here
Intended for the EJ257 engines of the Subaru Impreza STI 08+, this HKS Super SQV4 blow off valve is without doubt one of the most impressive on the market, whether it be for its finish, its sound or its efficiency. Featuring a unique sequential architecture coupled with an internal mechanical pressure control system, this HKS open dump valve is capable of handling any pressure without the need of any adjustment. Offering a sound that is both unique and aggressive, the SSQV4 by HKS is recognised as the most reactive dump valve on the market, offering an exceptional response time and making it one of the most installed in the world on Japanese cars.
-
Direct mounting
Silver finish
Sequential structure
Aggressive sound
Mounting kit included
Assembly instructions included
Made in Japan
| Brand | Model | Type | Version |
|---|---|---|---|
| Subaru | Impreza | GR - 08-11 | STI 300 |
| Subaru | Impreza | GV - 11-14 | STI-300 |
| Subaru | Impreza | VA - 14-18 | STI - 300 |
- Further information -
Our technical specifications and compatibilities refer to the standard equipment of the vehicles mentioned, in case of doubt about the compatibility of a product, please contact our customer service to answer your questions.
Content protected by copyright © 2026 - All rights reserved
HKS products come with a 1 year limited warranty for material and manufacturing defects applicable from the date of delivery. Note that warranty does not cover modified, misused or not correctly fitted products.
Deatschwerks DW65C / DW300C fuel pump kit for Subaru Impreza STI 08-18
Subaru Impreza / BRZ and Toyota GT86 / GR86 HKS Red Oil Filler Cap
Subaru Impreza STI 08-20 HKS Super Air Filter Panel
No reviews yet
*Write your comment here
