As low as 0% APR - Buy Now, Pay Later!
On orders over $200
100% Money Back on Select Parts

HKS Super SQV4 Blow Off Valve - Universal

MODEL # HKS2 71008-AK001
Manufacturer Part # 71008-AK001


MSRP: $295.00

In stock! Ships same day
Qualifies for free shipping!


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. 

This is a universal unit that will come provided with a c-clip, zip-ties, a pair of vacuum T’s, and a vacuum line filter.

| | | | |


Brand: HKS
Adjustable: No
Color: Silver
Design: Diaphragm
Includes Gasket(s): No
OEM Replacement: No
QTY: 1
Valve Type: Atmospheric

Mfgr. Warranty: 1 Year
Condition: New Product
Return Policy:

RallySport Guarantee - 30 Days

Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.




Updated review!
3DSoundBlast 8 months ago
I have been able to fix the issue that I was having with my 2013 wrx hatch, the bov was fine and works as it should! its a solid piece however the bottom plate still had its issue where it was not even all the way across and it had issues fitting in attachments made for it.


Its alright, while it lasted
3DSoundBlast 12 months ago
Alright, so I bought the BOV and flange from a highly reputable perfomance shop about 2 or 3 months ago. It was a pain to put on the adapter because the bottom plate of the BOV was too big and not consistent on how thick the metal is. I had to shave it down a bunch on one side of the BOV and a little on another to get it to fit. Let me tell you that thing really fits in there. Now after 2 months of driving around with it, im assuming the seal in the BOV went bad, when I get into boost, I can hear a larg ammount of air coming out of the BOV. Im going to see if I can fix it or just replace it with a different one.

Verified Purchase

Awesome product
Maxwell914 1 year ago
Overall the product is well made and the sound it makes is intoxicating. I have 2 friends that have this on their cars and it sounds ridiculously good. You'll be popping on and off the throttle continuously. The only issue I had was that I could not get it to fit with my PW Verticooler there just wasn't enough clearance. I'm sure there is a way to get it to fit somehow but not that I could see. Yes you have to buy the separate flange but that's why it's a universal part not a vehicle specific.

Before you buy
Anthony N 1 year ago
I own a 2011 WRX, so if you have the same car or an 08+ read this before you decide on purchasing the part. This is not a bad review, but a heads-up that you will have to buy a few accessories. A flange, which has a part number mentioned in the review. And, a plug for the recirculating hose. It does have to be welded because our type of car. But, once I get this baby inside I will let y'all know my satisfactory with the item.

IF you buy this
Cuban 2 years ago
If you buy this don't let the video be misleading!!!! THIS PRODUCT DOES NOT COME WITH A FLANGE!!!!!! YOU MUST ORDER THE FLANGE SEPARATELY!!!

  • Q: flange  Colbie 4 months ago


    does it come with a flange, because the reviews keep saying it doesn't. If it doesn't come with on and is suppose to have a flange, will you send me a flange for the missing piece?

    • A: This valve does not include a flange, and would require an adapter to fit most vehicles. We do carry flanges for various universal valves to fit certain vehicles:

      Marcus E. 2 months ago
  • Q: CA  YousiG 5 months ago


    Will this fit my 2014 cadillac ats turbo?

    • A: This is a universal product. It is designed to fit a lot of vehicles but you will need the proper adapter for it. Unfortunately, we do not have one for a Cadillac.

      Luis L. 5 months ago
  • Q: 2017 Mustang EcoBoost Fitment  Justin_sti 10 months ago


    Will this fit my friend's 2017 mustang ecoboost?

    • A: This is a universal product. It is designed to fit a lot of vehicles but you will need to proper adapter for it. Unfortunately we do not have one for the Mustang.

      Tyler A. 10 months ago
  • Q: What size flange.   vincent44629 2 years ago


    Is this a 50mm flange? My FMIC piping has a 50mm flange welded in from my pro sport BOV. Will this directly replace it?

    • A: I am not sure on the exact size of the flange, but it would require ATT ATP-FLS-079 as an adapter or it would need to have a custom v band flange made for it because it is not a direct replacement for your current setup.

      Chris W. 2 years ago
  • Q: 2016 wrx  Mhtorres12 2 years ago


    What else will I need to install this on my 16 wrx?

    • A: You would need a flange to mount this to your car. I am not aware of one being produced, so you would likely need a custom one made.

      Josh P. 2 years ago
Universal Product
This item is non application specific.
Please verify compatibility before purchase. May require some modification for proper installation.