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HKS Super SQV4 Blow Off Valve - 02-07 WRX/STI

The HKS Sequential Blow Off Valve has been one of the favorite modifications among sport compact drivers for more than 20 years. From its unique chirping sound, to the ability to out-perform OEM units makes this a blow off valve one can depend on. The latest HKS Super SQV4 Blow Off Valve employs the same design qualities as the original which involves a pull-type sequential valve structure with a differential pressure control system. This design allows for stable operating ranges from low, to high boost pressures.

Additionally, this particular SQV4 will come with an OEM-like mounting flange to allow users to have a ready installation.



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