HKS SSQV4 BOV with Return Kit Black

2015-2021 Subaru WRX

Ships for free in the 48 states

SKU: 71008-KF015BWe price match!

Out of Stock

The latest HKS SSQ is available as the SQV4 and in the Black Edition to provide a clean and stealth look to the engine bay of the 2015-2021 Subaru WRX. 
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HKS SSQV4 Black Edition Sequential Blow-Off Valve


  • Black Edition
  • Pull-type sequential valve structure
  • The new differential pressure control system allows for stable operating ranges from low to high-boost pressures
  • Includes vacuum line filter
  • Includes circlip, T-fittings, and zip ties
  • Will include the return kit to integrate into the stock plumbing


  • Includes return kit
  • The return kit will allow the user to convert the SQV4 into full recirculation



This is the HKS Black Edition SQV4 Sequential BOV. This is the grandfather of blow-off valves with its flagship sound that remains to be one of the most effective blow-off valves in the aftermarket. This blow-off valve reacts very quickly to purge excess boost while creating that flagship HKS blow-off valve chirp. A great upgrade over the factory diverter valve in your WRX



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