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HKS Super SQV4 Blow Off Valve - Subaru WRX 2002-2007 / STI 2004-2007 / Forester XT 2006-2008
HKS Super SQV4 Blow Off Valve - Subaru WRX 2002-2007 / STI 2004-2007 / Forester XT 2006-2008
HKS Super SQV4 Blow Off Valve - Subaru WRX 2002-2007 / STI 2004-2007 / Forester XT 2006-2008
HKS Super SQV4 Blow Off Valve - Subaru WRX 2002-2007 / STI 2004-2007 / Forester XT 2006-2008
HKS Super SQV4 Blow Off Valve - Subaru WRX 2002-2007 / STI 2004-2007 / Forester XT 2006-2008
HKS Super SQV4 Blow Off Valve - Subaru WRX 2002-2007 / STI 2004-2007 / Forester XT 2006-2008
HKS Super SQV4 Blow Off Valve - Subaru WRX 2002-2007 / STI 2004-2007 / Forester XT 2006-2008
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User Media for: HKS Super SQV4 Blow Off Valve - Subaru WRX 2002-2007 / STI 2004-2007 / Forester XT 2006-2008

HKS Super SQV4 Blow Off Valve

Subaru WRX 2002-2007 / STI 2004-2007 / Forester XT 2006-2008

Read 9 Reviews | 48 Q&As
Part # 71008-AF006
$306.89
msrp: $395.00

In stock!
ANY QUESTIONS?

Features & Product Details

RallySport Direct proudly carries quality performance products from the pioneers of the sport compact industry, HKS. They offer some of the best automotive performance parts on the market for your rally car, race car, or even your daily driver!

 

Here, you are looking at the HKS SQ4 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.

 

 

 

 

DETAILS:

  • Pull-type sequential valve structure
  • New differential pressure control system allows for stable operating ranges from low to high-boost pressures
  • Comes provided with an OEM-like mounting flange to allow users to have a ready installation
  • Product Video

    Specifications

    Brand: HKS
    Adjustable: No
    Color: Silver
    Design: Diaphragm
    OEM Replacement: Yes
    QTY: 1
    Valve Type: Atmospheric or Recirculating
    Includes Gasket(s): No
    Mfgr. Warranty: 1 Year
    Condition: New Product
    Return Policy:
    Standard

    PEOPLE WHO VIEWED THIS ITEM ALSO VIEWED

    REVIEWS & CUSTOMER MEDIA

    9 Reviews
    5 out of 5 Stars
    5 Stars
    (9)
    4 Stars
    (0)
    3 Stars
    (0)
    2 Stars
    (0)
    1 Stars
    (0)
    Customer Photos and Videos
    HKS Super SQV4 Blow Off Valve ( Part Number: 71008-AF006)
    Nice 7 months ago
    5out of 5stars
    02 WRX
    Probably one of the best sounding BOV out there for the EJ platform easy install all parts included would recommend 10/10
      
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    Hks bov 2 years ago
    5out of 5stars
    Tim K.
    great quality piece awesome sound easy install
      
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    Hks blow off valve  4 years ago
    5out of 5stars
    Jeremiah
    It is amazing makes my turbo sound so good and loud after letting off the gas would highly recommend
      
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    Sounds Awsome! 4 years ago
    5out of 5stars
    MattyIce
    This blow off valve sounds better than any other I've ever owned. Gives off a loud chirp, some of my friends say that they hear the bov before they hear my exhaust when I pull up. Easy install, everything needed was included. Great purchase.
      
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    02 WRX 4 years ago
    5out of 5stars
    BuckTeeth808
    Definitely worth the money! Fits perfect and sounds amazing Shipping was fast, as always.
      
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    QUESTIONS & ANSWERS

    • Q: question  yurr8 months ago

      do u have to get it tuned after installing this blow off valve? or can u just have it without it ever getting tuned?
    • Q: HKS SUPER SQV4 BOV  Theo10 months ago

      I have a 2005 WRX. It has an COBB intake but other then that, the engine bay is stock. Do I need a tune to run this BOV?
    • Q: Hg rating  Zephboi10 months ago

      What is the spring rated out from the box. My boy is being held open and I’m not sure if my his bov spring is giving out or my vacuum pressure is too high.
      • 0 of 0 people found the following answer helpful

        A:  Unfortunately HKS does not publish that info, they just state it's "application specific"

        Lane H. @ RallySport Direct 8 months ago  
          
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    • Q: HKS Super SQV4 BOV & it's fitment  19' Stage 2 STI10 months ago

      What is the difference between the BOV that "fits the '08+ STI", and the BOV that is listed as "Universal?" One is $253 and the other is $339. Is the price difference just due to the flange, and will the universal version fit an STI anyway? If so, will it fit with a FMIC that is compatible with aftermarket BOV's? Sorry for the length.
      • 0 of 0 people found the following answer helpful

        A:  The difference is the flange, you would need a flange for the universal one to fit your STI, out of the box it would not be compatible.

        Lane H. @ RallySport Direct 8 months ago  
          
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    • Q: Turbo releasing air - might be the blow off valve  f_dork1 year ago

      I bought a 2010 wrx with this BOV installed already. Recently the I can hear the turbo blow air out of somewhere, so its basically doing nothing. At first glance I see that the smaller line that comes off of the BOV runs under the intercooler but isn't connected to anything. Is this the problem? If so where is that line suppose to connect to?
      • 0 of 0 people found the following answer helpful

        A:  The hose coming off the BOV should connect to a port on the backside of the intake manifold.

        Jesse F. @ RallySport Direct 1 year ago  
          
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