






HKS Super SQV4 Blow Off Valve
Universal
Features & Product Details
RallySport Direct proudly carries quality performance products from the pioneers of the sport compact industry, HKS. They are one of the pioneers of aftermarket performance products!
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:
Product Video
Specifications
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REVIEWS & CUSTOMER MEDIA






Added this to the CPE exhale kit for my Focus ST. Sounds so good, especially with the gold fin added. Install is a little bit of a pain. Just have to get some quality snap ring pliers. The ICON kit from harbor freight worked perfectly for me. The cheapies just don't cut it.
This BOV is perfect to get that classic sound everybody loves. I've had mine on for 4 years and it performs great. Only complaint about it is the clear coat seems to flake off after a while.
The product is great and I've used this BOV on my Supra for 6 years without issues. However in comparison to the TiAL Q, there is noticeable compressor surge at low pressure relief in comparison to the TiAL Q, due to the primary and secondary valve operation on this HKS BOV. For a detailed description reference my video: https://youtu.be/9mExdJ4ebSU
Awesome! The noise is really wonderful!
HKS... the legendary BOV sound no one has copied. This is the 7th one of these I have put into one of my cars. Hands down my favorite BOV.
QUESTIONS & ANSWERS
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Q: Fit Fit a Subaru 2013 wrx1 year ago
Does this fit a 2013 wrx without the flange
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A: You will need a flange for your WRX, or you can purchase the part specific for the 2008-2014 WRX. Part # HKS71008-AF012
Lane H. @ RallySport Direct 1 year ago
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Q: Fitment Christan 2 years ago
Will this fit a FMIC on a 2006 Sti?
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A: We have the HKS Super SQV4 kit specific for your 2006 STI, it already has the correct flange so need to purchase anything else. Part # HKS71008-AF006 has the correct OEM flange.
Lane H. @ RallySport Direct 2 years ago
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Q: 2015 WRX Solid7202 years ago
Will this fit a base 2015 2.0 Wrx without the flange?
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A: No, you would need a flange. Part # HKS71008-AF015 is meant specifically for your 2015 WRX.
Lane H. @ RallySport Direct 2 years ago
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Q: HKS BOV Zdaddy3 years ago
Looking to get 2 for my car. Will this work on a 2019 Infiniti Q50 luxe? Which parts and what else is needed?
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A: You would need HKS flanges for your vehicle.
Lane H. @ RallySport Direct 2 years ago
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Q: 2020 accord sport 2.0t David V.3 years ago
Will this fit my 2020 accord sport 2.0t or will I need to get a adapter
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A: This should be able to fit on your accord, but we can't confirm compatibility.
Travis D. @ RallySport Direct
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This Part Fits
This item is non application specific.
Please verify compatibility before purchase. May require some modification for proper installation.