Click to zoom in
SKU: 71008-AK005 | UPC: 4957266265697
HKS SQV IV Black Edition Universal Blow Off Valve Assembly
The HKS SQV IV Black Edition Universal Assembly blow off valve provides precise boost pressure control for turbocharged vehicles. Designed as a universal fit it includes adapters for intake pipes from 25mm to 51mm ID popular on Subaru Impreza WRX STI Nissan 350Z 370Z GT-R and Mitsubishi Lancer Evolution. Expect sharper throttle response iconic whoosh sound and reliable operation under high boost.
Key Features
- Sequential Dual Valve Design: Pilot actuator opens valve progressively low boost uses small area for quiet release high boost fully opens for maximum airflow
- Black Anodized Billet Aluminum: Lightweight corrosion resistant construction with premium finish resists heat and wear
- Multiple Flange Adapters: Includes metal and rubber flanges for 25-32mm 32-38mm 38-50mm hoses bolt-on compatibility no welding needed
- High Flow Capacity: Handles up to 600hp supports larger turbos maintains boost stability reduces compressor surge
- Viton O-Rings and Hardware: Heat resistant seals and full mounting kit ensure leak-free performance easy servicing
Product Notes
- Adjust preload spring for boost levels up to 2.0kg/cm²
- Pair with HKS intake pipe for best results
- Secure packaging prevents shipping damage
Installation Notes
- Professional installation recommended.
- Clamp flanges to existing piping no cutting required
- Compatible with HKS SSQV3 upgrade kits and OEM turbo setups
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2007 | Subaru | Impreza | WRX |
| 2004-2021 | Subaru | Impreza | WRX STI |
| 2015-2021 | Subaru | WRX | STI |
| 2003-2008 | Nissan | 350Z | All |
| 2009-2020 | Nissan | 370Z | All |
| 1989-1998 | Nissan | Skyline | GT-R R32/R33 |
| 1999-2002 | Nissan | Skyline | GT-R R34 |
| 2007-2023 | Nissan | GT-R | R35 |
| 2003-2006 | Mitsubishi | Lancer | Evolution VIII/IX |
| 2007-2015 | Mitsubishi | Lancer | Evolution X |
Why Choose HKS?
- Developed sequential blow off valve technology first in 1994
- Used in professional racing worldwide
- Machined to micron tolerances for consistent performance
Frequently Asked Questions
-
Q: Will this fit my turbocharged Subaru WRX STI?
A: Yes universal flanges match 32-38mm piping common on STI models select correct adapter for direct bolt-on -
Q: What material and finish used?
A: CNC billet aluminum body with black anodized coating for heat resistance and sleek appearance -
Q: What warranty coverage provided?
A: HKS 1-year manufacturer defect warranty covers parts and labor with proof of purchase
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Original HKS box 7.1 x 5.5 x 4.7 inches
- Weight: 1.54 lbs
Blow Off Valves
Blow off valves and boost release accessories for turbocharged and supercharged vehicles are stocked at Black Ops Auto Works. Shop GFB, Turbosmart, Granatelli, HKS, and GReddy blow off valves for Subaru WRX and STI, Mercedes AMG, GR Corolla and GR Yaris, Civic Type R, Ram Hurricane, Nissan S14 and S15, and GT-R platforms. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 341 blow off valve SKUs across style and vehicle platform. What This Category Covers Blow off valves release excess boost pressure from the intake tract when the throttle closes, protecting the turbocharger and intercooler piping from pressure spikes that can otherwise cause compressor surge. This collection covers vent to atmosphere and hybrid recirculating blow off valves along with mounting hardware and replacement components. Categories Included Vent to atmosphere blow off valves, hybrid recirculating blow off...
View Blow Off Valves Products
Forced Induction
Forced induction is the fastest way to add real power to an engine without adding displacement, and this collection covers the full range of turbocharger, supercharger, intercooler, and boost control hardware needed to build a reliable boosted platform. Whether you are running a factory turbo upgrade, swapping to a bigger frame turbocharger, adding a centrifugal or roots style supercharger, or dialing in a nitrous system for a quick shot of extra power, you will find the components here to build and support the setup correctly. Every part in this collection is organized by system type so you can move from a stock turbocharger to a properly supported forced induction build in one place. Intercoolers, wastegates, blow off valves, boost controllers, and water meth injection components are all included alongside the core turbo and supercharger hardware so the entire boost system can be sourced together. What This Category Covers This collection includes turbochargers, turbo kits, s...
View Forced Induction Products
HKS
HKS Japanese performance parts for Toyota Supra, Nissan Skyline GT-R, Nissan Silvia and 240SX, Subaru WRX and STI, and other JDM platforms are stocked at Black Ops Auto Works. Shop turbo kits, cat back exhaust systems, coilovers, blow off valves, and engine management upgrades for RB26DETT, SR20DET, 2JZ-GTE, and EJ series turbocharged engines. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 607 HKS SKUs across forced induction, exhaust, suspension, and engine management categories. What This Collection Covers HKS has built its reputation on Japanese sport compact and sports car performance since the late 1970s, developing turbo kits, exhaust systems, and suspension for platforms including the Toyota Supra 2JZ-GTE, Nissan Skyline GT-R RB26DETT, Nissan Silvia and 240SX SR20DET, and Subaru WRX and STI EJ and FA series engines. This collection brings together fitment verified HKS pa...
View HKS Products