HKS Super SQV 4 blow off valve with distinctive rally car style 'chirp' when venting to atmosphere.
This latest version has new HKS badging and re-designed internals.
In 1994, HKS introduced the first Sequential Blow-Off Valve featuring a unique, pull-type, sequential valve structure and a differential pressure control system. This advanced pull-type relief system allowed for stable operating ranges from low to high boost pressures. Since imitation is the highest form of flattery, HKS has once again redesigned the physical aspects of the Super Sequential Blow Off Valve to thwart off the counterfeiters.
Reliable functionality of the Super SQV 4 is unchanged and utilizes the same mounting flanges as all previous generation SSQVs.
Fully compatible with the optional HKS SSQV Special Fins. Super SQV 4 features include a nickel-plated, die-cast metal secondary valve, which is swaged to the primary valve, a stainless steel C-Clip and spring to increase sealing and durability.
Direct fit (unlike other companies we do not supply the universal version that is not suitable for the Impreza) for Bug Eye WRX or STi, Blob Eye WRX or STi and Hawk Eye WRX or STi.
Includes full fitting kit and English instructions.Part Ref: 71008-AF006