Sold out
Click to zoom in
SKU: 71008-AN020V | UPC: 4957266265635
HKS Super SQV IV + Return Kit Nissan Skyline R33 GTST ECR33 & R34 GTT ER34 RB25DET 1993-2002
The HKS 71008-AN020V Super SQV IV + Return Kit delivers the complete blow-off valve solution for Nissan Skyline R33 GTST (ECR33 1993-1998) and R34 GTT (ER34 1998-2002) equipped with RB25DET engines. This sequential valve features triple-fin discharge and pull-type relief for sharp “tsssh” blow-off sound while maintaining reliable boost pressure. The included recirculation hose enables closed-loop operation for smooth, factory-style performance without check engine lights.
Key Features
- Super SQV IV Valve: Triple-fin discharge port and pull-type diaphragm for progressive opening and high-flow capacity up to 280hp
- Sequential Dual-Valve Design: Primary valve opens first for low boost, secondary engages at high boost for precise control across RPM range
- Recirculation Return Hose: Direct-fit hose routes excess air back to intake pipe for quiet operation and emissions compliance
- Direct Bolt-On Fitment: Precision-machined mounting flange matches stock location on ER34 and ECR33 intercooler piping
- Lightweight Construction: Die-cast aluminum body weighs only 1.1 lbs for reduced hood weight and corrosion resistance
Product Notes
- Complete kit includes SQV IV valve, return hose, O-rings, mounting hardware for plug-and-play installation
- Adjustable spring preload for tuning blow-off response to match turbo setup
- Ships in official HKS retail box with protective foam inserts
Installation Notes
- Professional installation recommended.
- 30-60 minutes with basic hand tools. remove stock BOV and recirc hose from intercooler pipe
- All necessary gaskets and fittings provided. no pipe cutting or welding required
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1993-1998 | Nissan | Skyline | R33 GTST (ECR33) RB25DET |
| 1998-2002 | Nissan | Skyline | R34 GTT (ER34) RB25DET |
Why Choose HKS?
- Original JDM blow-off valve pioneer since 1994 with millions sold worldwide
- Hand-assembled in Japan using high-grade billet aluminum and stainless steel components
- Proven on RB engines in drifting, time attack, and street applications
Frequently Asked Questions
-
Q: Does this kit trigger a check engine light on ER34 or ECR33?
A: No, the return hose recirculates boost air to the intake pipe just like the OEM setup for seamless ECU compatibility. -
Q: What material is the valve body made from?
A: CNC-machined aluminum with anodized finish and fluorosilicone diaphragm for durability and heat resistance up to 200°F. -
Q: What is the warranty and return policy?
A: 1-year limited manufacturer warranty against defects. contact us for installation verification before warranty claims.
Shipping & Handling
- Method: UPS/FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Official HKS retail box 10 x 8 x 6 inches
- Weight: 1.5 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