Calibrate your blow-off valve for precise response with this genuine TiAL Sport replacement spring. Designed specifically for the TiAL Q series BOV, this spring allows you to match the valve's opening characteristics to your engine's specific idle vacuum levels, preventing boost leaks and ensuring smooth operation.

This spring is color-coded purple to signify an 11 PSI rating. Using the correct spring tension is critical for maintaining idle stability and protecting your turbocharger from compressor surge during off-throttle transitions.

• Manufacturer Part Number: 002574
• Spring Rate: 11 PSI
• Identification Color: Purple
• Compatibility: Engineered for TiAL Q and QR series blow-off valves
• Material: High-tensile spring steel for consistent tension and long-term durability

Calibrate your forced induction system's response with this genuine TiAL Sport replacement spring for Q series Blow Off Valves. This high-precision spring is rated for 11 PSI and features a black color-coded finish for easy identification during tuning or maintenance.

Selecting the correct spring pressure is essential for maintaining a proper seal at idle while ensuring the valve vents reliably during throttle lift. This spring is manufactured to strict tolerances to provide consistent performance under boost. Use this to replace a worn internal spring or to recalibrate your BOV after engine modifications that alter your manifold vacuum levels.

• Manufacturer Part Number: 002573
• Pressure Rating: 11 PSI
• Identification Color: Black
• Application: TiAL Q Series Blow Off Valves (BOV)

Calibrate your blow off valve for optimal performance with the TiAL Sport Q BOV 11 PSI Replacement Spring. This genuine TiAL component is engineered to precisely control the opening and closing of your valve based on engine vacuum, ensuring your turbocharger operates efficiently without premature venting or compressor surge.

Constructed from high-tensile spring steel, this Blue-coded spring is designed to withstand the extreme heat and cycling of high-performance engine bays. It is a direct replacement or tuning component for the TiAL Q and QR series blow off valves, allowing for fine-tuning of the BOV's response to match your specific engine vacuum profile.

• Product Type: Blow Off Valve Tuning Spring
• Spring Rate: 11 PSI
• Color Code: Blue
• Compatibility: Designed for TiAL Q and QR series valves
• Material: High-tensile spring steel
• Manufacturer Part Number: 002572

Fine-tune your turbocharger's boost response and idle stability with this genuine TiAL Sport replacement spring for Q Series Blow Off Valves (BOV). This 11 PSI spring, identified by its Silver color coding, is engineered to provide the precise seat pressure required to keep the valve closed at idle while ensuring reliable venting during throttle lift. Selecting the correct spring rate based on your engine's vacuum at idle is critical for preventing boost leaks and ensuring the longevity of your turbocharger components.

• Manufacturer Part Number: 002571
• Pressure Rating: 11 PSI
• Color Identification: Silver
• Compatibility: Fits TiAL Sport Q Series Blow Off Valves
• Material: High-strength spring steel for consistent tension over heat cycles

This genuine TiAL Sport replacement spring is engineered specifically for the TiAL Q and QR series Blow Off Valves. Selecting the correct spring rate is essential for ensuring your BOV remains closed at idle and tip-in while opening reliably under vacuum to protect your turbocharger from compressor surge.

Precision-wound from high-quality spring steel, this 10 PSI spring features a red color-coded finish for easy identification. This component allows for precise tuning of the valve's response based on your engine's specific vacuum characteristics.

• Application: Fits TiAL Q and QR series Blow Off Valves
• Pressure Rating: 10 PSI
• Spring Color: Red
• Material: High-grade spring steel
• Manufacturer Part Number: 002570

Calibrate your turbocharger's pressure relief system with this genuine TiAL Sport replacement spring for Q and QR series Blow Off Valves (BOVs). This 10 PSI spring, color-coded Purple, is engineered to provide the precise tension required to keep the valve seated at idle while ensuring rapid actuation during throttle lift-off. Properly matching the spring rate to your engine's vacuum profile is essential for preventing compressor surge and ensuring smooth drivability.

• Manufacturer Part Number: 002569
• Pressure Rating: 10 PSI
• Color Identification: Purple
• Compatibility: Designed specifically for TiAL Sport Q and QR series BOVs
• Construction: Manufactured from high-tensile spring steel for consistent performance and fatigue resistance

Whether you are replacing a worn component or tuning your BOV response for a specific vacuum range, this genuine TiAL spring delivers the reliability needed for high-performance forced induction applications.

Calibrate your turbocharger system's response with this authentic TiAL Sport replacement spring, specifically designed for Q and QR series blow off valves. This 10 PSI spring (color-coded Black) is a critical tuning component used to match the valve's opening pressure to your engine's vacuum characteristics, ensuring the BOV remains seated at idle while providing rapid pressure relief under deceleration.

• Compatible with TiAL Sport Q and QR series blow off valves
• Spring Pressure Rating: 10 PSI (-20 in/Hg)
• Color Code: Black for easy identification
• High-strength spring steel construction for consistent tension and longevity
• Helps prevent compressor surge and boost leaks caused by incorrect spring rates
• Manufacturer Part Number: 002568

This genuine TiAL Sport replacement spring is engineered specifically for use within Q and QR Series Blow Off Valves (BOV). In a vacuum-actuated bypass system, the spring rate is critical for ensuring the valve remains closed at idle while allowing for rapid venting during lift-off. This Blue-coded spring is rated for 10 PSI, providing the specific tension required to match your engine's vacuum profile and prevent compressor surge.

• Manufacturer Part Number: 002567
• Application: TiAL Q and QR Series Blow Off Valves
• Spring Rate: 10 PSI
• Color Identifier: Blue
• Material: High-strength spring steel for consistent tension and heat resistance
• Designed to maintain a precise seal under high boost pressures

Calibrate your turbocharger system’s pressure relief with this genuine TiAL Sport replacement spring. This 10 PSI spring is engineered specifically for the TiAL Q and QR series 50mm blow-off valves (BOV), allowing you to tune the valve's response to match your engine's specific manifold vacuum at idle. Selecting the correct spring rate is critical to ensure the valve remains closed under idle while still opening quickly under lift-off conditions to prevent compressor surge.

• Compatible with TiAL Q and QR series blow-off valves
• Spring Rate: 10 PSI (typically for engines with -16 to -19 in/Hg idle vacuum)
• Color Code: Silver for easy identification
• High-quality spring steel construction for consistent tension and longevity
• Manufacturer Part Number: 002115

The PERRIN Diverter Valve for select 2019-2026 Subaru WRX, Legacy, Outback XT, and Ascent models replaces the factory unit to provide superior boost pressure control and enhanced drivability. Engineered to handle increased boost levels, this valve addresses the common failure points and leaks associated with OEM plastic components, ensuring your turbocharger maintains peak efficiency during hard acceleration.

This direct-replacement component is designed for precise actuation and consistent performance, resulting in crisper throttle response and more stable boost curves. Whether installed on a stock vehicle or one with performance tuning, the PSP-TAC-616RD provides the reliability required for modern Subaru turbocharged engines.

• Fits 2022-2026 Subaru WRX, 2020-2025 Legacy/Outback XT, and 2019-2025 Ascent
• Optimizes boost pressure control for improved drivability
• Durable construction prevents pressure loss common with factory plastic valves
• Red anodized finish for corrosion resistance and engine bay styling
• Manufacturer Part Number: PSP-TAC-616RD

Fits 2015-2020 Subaru WRX (Base, Limited, and Premium).

The PERRIN Bypass/Blow Off Valve is designed to replace the weak, plastic factory valve that often leaks under high boost. By providing a more reliable seal and faster response times, this valve helps maintain consistent boost pressure and protects your turbocharger from compressor surge. Precision-machined for a perfect fit, it is a direct bolt-on upgrade that integrates seamlessly with the factory charge pipe.

• Improved Performance: Enhances boost response and holds higher pressure than the stock unit.
• Durable Construction: CNC machined from 6061 aluminum with a vibrant red anodized finish for corrosion resistance and engine bay styling.
• Direct Fit: Replaces OEM part for a straightforward installation without permanent modifications.
• Recirculating Design: Specifically engineered to work with the factory ECU to maintain proper air-fuel ratios.
• Manufacturer Part Number: PSP-TAC-615RD

Fits select 2005-2014 Subaru Impreza WRX STI and Legacy GT models. This PERRIN Bypass/Blow Off Valve (BOV) is engineered to replace the factory unit, providing a more robust solution for managing boost pressure and protecting the turbocharger.

Designed to handle higher-than-stock boost levels, this valve ensures reliable operation by preventing compressor surge during gear changes or throttle lift-off. The red-anodized finish adds a durable, high-performance look to the engine bay while the precision-machined internals offer consistent response compared to the original equipment.

• Manufacturer Part Number: PSP-TAC-610RD
• Finish: Red Anodized
• Application: Replaces factory bypass/blow off valve
• Fitment: Specific to Subaru WRX STI and Legacy GT models listed

Fits 2005-2012 Subaru Legacy GT, GT Limited, and GT spec.B.

The PERRIN Bypass/Blow Off Valve (BPV/BOV) is designed to replace the factory unit, providing a more robust solution for managing boost pressure. Whether running stock boost or an upgraded turbocharger, this valve ensures consistent performance and improved throttle response by eliminating the boost leaks common in aging OEM components. Its precision construction allows for reliable operation under high-pressure conditions while maintaining a direct-fit installation.

• Finish: Black
• Enhances boost response and reliability
• Direct replacement for the factory mounting points
• Compatible with 2.5GT, GT Limited, and spec.B models
• Manufacturer Part Number: PSP-TAC-610BK

Fits select 2002-2014 Subaru Impreza WRX and WRX STI models.

The PERRIN Bypass/Blow Off Valve (PSP-TAC-600RD) is engineered to provide superior boost management compared to the factory unit. By efficiently venting pressure during throttle closure, this valve helps maintain turbocharger speed and reduces compressor surge, leading to improved throttle response and long-term turbo reliability.

Constructed for durability and finished in a striking red coating, this valve is a direct-fit upgrade for high-performance Subaru engines. Whether you are running stock boost or an upgraded setup, the PERRIN valve ensures consistent sealing and performance under pressure. It is designed to handle increased boost levels while maintaining the drivability of a factory bypass valve.

• Manufacturer Part Number: PSP-TAC-600RD
• Color: Red
• Type: Hybrid Bypass/Blow Off Valve
• Direct replacement for the factory valve
• Improves throttle response and boost management

Fits 2002-2007 Subaru Impreza WRX and 2004-2020 Subaru WRX STI.

The PERRIN Bypass/Blow Off Valve (PSP-TAC-600BK) is a high-performance replacement for the factory unit, designed to handle higher boost levels and provide more consistent pressure management. Finished in a durable black coating, this valve ensures reliable operation whether you are maintaining a recirculating setup or seeking a hybrid response. By replacing the stock plastic or lightweight metal valve, it prevents boost leaks that often occur under increased load on EJ-series engines.

• Precision-machined body with a sleek black finish
• Designed for direct fitment to the factory intercooler or flange
• Improves turbocharger response and longevity by preventing compressor surge
• Manufacturer Part Number: PSP-TAC-600BK

Full Vehicle Fitment:

• 2002-2007 Subaru Impreza WRX (Base, Limited, TR)
• 2004-2014 Subaru Impreza WRX STI (Base, Limited, Special Edition)
• 2015-2020 Subaru WRX STI (Base, Limited, Launch Edition, Series.HyperBlue)

Fits 2015-2023 Subaru WRX (VAG/VMG) with FA20DIT engines.

The HKS Super SQV4 (Super Sequential Blow Off Valve) Black Edition Return Kit Plus is a vehicle-specific kit engineered for the FA20-powered WRX. This kit features the iconic HKS pull-type relief valve in a limited black finish, designed to prevent boost leaks even under high-pressure applications. The sequential valve structure ensures precise relief across a wide range of boost levels, improving throttle response and turbocharger longevity.

This "Return Kit Plus" version is specifically designed for street-driven applications where maintaining metered air is critical. It includes the suction return hose and necessary hardware to recirculate air back into the intake system, preventing the stalling or rich-running conditions often associated with atmospheric blow-off valves on MAF-based vehicles. The kit comes with a triple-fin design to produce the signature HKS sound while providing a complete, bolt-on solution.

• Authentic HKS Super SQV4 Black Edition valve
• Direct-fit mounting bracket and suction return pipe included
• Sequential pull-type relief valve prevents leaking
• Recirculates air to intake for stable idling and drivability
• Manufacturer Part Number: 71008-KF015B

Fits 2008-2021 Subaru WRX STI (GRB/GVB/VAB) with the EJ257 engine.

The HKS Super SQV4 (Super Sequential Blow Off Valve) uses a unique sequential valve structure and a differential pressure control system, which allows for a broad operating range from low boost to high boost. Its pull-type relief design ensures that the valve remains closed under boost, becoming more tightly sealed as pressure increases, preventing the leaks often found in cheaper push-type valves.

This limited Black Edition features a sleek matte black finish on the body and various components. This specific kit includes the HKS Suction Return Kit, which is essential for Subaru owners who want to recirculate the discharged air back into the intake stream. This ensures the MAF sensor readings remain accurate, preventing the rich-stumble and stalling issues common with atmospheric blow-off valves on factory-tuned ECUs.

• Manufacturer Part Number: 71008-KF013VB
• Finish: Special Black Edition finish
• Valve Design: Sequential Pull-Type for leak-free performance at any boost level
• Recirculation: Includes Suction Return Kit for MAF sensor compatibility
• Installation: Vehicle-specific flange for direct bolt-on fitment
• Included: SSQV4 BOV, Return Kit hose and fittings, snap ring, O-ring, and installation hardware

Fits 2010 Mazdaspeed 3.

The HKS Super SQV4 (Sequential Quality Valve) utilizes a unique pull-type relief valve structure, which ensures the valve remains closed under boost. Unlike traditional push-type blow off valves that can leak under high pressure, the SSQV4 design uses the boost pressure to keep the valve sealed, providing reliable performance and sharp throttle response for your turbocharged engine.

• High-quality aluminum die-cast body with a silver finish for long-term durability
• Sequential valve mechanism allows for optimal operation across low and high boost ranges
• Pull-type relief design prevents premature discharge and boost leaks
• Vehicle-specific kit includes the necessary flange and hardware for a direct-fit installation
• Features the iconic HKS triple-fin sound during atmospheric discharge
• Manufacturer Part Number: 71008-AZ009

Fits 2007-2009 Mazda Mazdaspeed 3 and CX-7 models. The HKS Super SQV4 (Super Sequential Blow Off Valve) kit is engineered to prevent compressor surge and maintain consistent boost response. Unlike standard push-type valves that can leak under high boost, the HKS pull-type relief design uses a differential pressure control system that remains tightly sealed during boost, only opening when triggered by pressure differentials.

The SSQV4 features a dual-stage sequential valve system and a nickel-plated, die-cast aluminum primary valve for long-term durability. This kit includes the signature HKS triple-fin design, producing the iconic high-frequency discharge sound during gear shifts and deceleration. This is a vehicle-specific application designed for a direct-fit installation on the 2.3L MZR DISI Turbo engine.

• Direct-fit kit for 2.3L MZR DISI Turbo engines
• Pull-type relief design ensures the valve stays shut under high boost
• Dual-stage sequential valve structure for improved throttle response
• High-quality aluminum die-cast body with silver finish
• Includes all necessary hardware, hoses, and vehicle-specific mounting flange
• Manufacturer Part Number: 71008-AZ008

Fits 1993-1996 Mazda RX-7 (FD3S) Twin Turbo models.

The HKS Super SQV4 (SSQV4) utilizes a unique sequential valve structure and a differential pressure control system, allowing for a broad operating range from low boost to high boost. Unlike standard push-type blow off valves, the SSQV4 features a pull-type relief design that ensures the valve remains closed under boost, preventing pressure leakage while maintaining stability during idle.

This vehicle-specific kit is engineered to replace the factory bypass setup, offering improved throttle response and protecting the turbochargers from harmful compressor surge. The silver die-cast aluminum body provides high-speed valve movement and long-term durability, featuring the signature HKS triple-fin sound during atmospheric discharge.

• Pull-type relief valve design prevents boost leaks and ensures operation across all boost levels
• High-rigidity metal die-cast component for lasting reliability
• Dual-stage sequential valve for precision pressure control
• Vehicle-specific mounting hardware for a secure installation
• Manufacturer Part Number: 71008-AZ007

Fits 1993-1998 Toyota Supra Turbo models. The HKS Super SQV4 (Sequential Quality Valve) is the premier solution for boost management, utilizing a unique sequential valve structure and a differential pressure relief system. Unlike standard push-type blow off valves, the SSQV4 features a pull-type relief valve that remains closed under boost and responds instantly during throttle lift-off, regardless of the boost pressure level.

• Pull-type valve design ensures the valve stays shut during high boost and operates reliably across the entire vacuum range
• Dual-stage sequential valve provides quick response at low boost and high flow capacity for high boost applications
• High-quality aluminum die-cast body with a silver coating for superior durability and heat dissipation
• Vehicle-specific kit includes all necessary mounting hardware, flanges, and hoses for a direct-fit installation
• Manufacturer Part Number: 71008-AT012

Fits 1990-1995 Toyota MR2 (3S-GTE).

Protect your turbocharged 3S-GTE engine from compressor surge with the HKS Super SQV4 (SSQV4) Blow Off Valve Kit. Unlike standard push-type relief valves that can leak under high boost, the HKS Super SQV4 utilizes a sequential pull-type relief valve system. This unique design ensures the valve remains closed during boost and only opens during throttle lift-off, regardless of the pressure level, providing consistent performance and throttle response.

Constructed with a durable aluminum die-cast body and finished in a sleek silver coating, this kit is engineered for both longevity and visual appeal. This application-specific kit (MPN 71008-AT009) includes the necessary mounting hardware and vacuum lines to integrate with your MR2's factory forced induction system.

• Sequential valve structure for precise pressure relief across all boost ranges
• Pull-type valve design prevents leaking even under high-boost applications
• Signature HKS triple-fin sound profile
• High-quality die-cast aluminum body with silver finish
• Includes all necessary vehicle-specific installation hardware
• Manufacturer Part Number: 71008-AT009

Fits Nissan GT-R R35 models equipped with the VR38DETT engine.

The HKS Super SQV 4 (Sequential Blow Off Valve) is the latest iteration of the industry-standard SSQV series, utilizing a unique sequential valve structure and a differential pressure control system. This design allows for a broad operating range from low boost to high boost, ensuring crisp valve response regardless of the pressure level. Unlike standard push-type relief valves, the HKS pull-type relief mechanism ensures the valve remains tightly closed against the seat as boost increases, eliminating the risk of boost leaks.

• High-rigidity aluminum die-cast body with a silver-coated finish for durability and heat management
• Sequential valve design (primary and secondary) provides precise relief across the entire RPM range
• Triple Fin design produces the iconic, high-frequency HKS discharge sound
• Direct replacement kit specifically engineered for the R35 GT-R factory mounting points
• Includes all necessary hardware for a complete installation
• Manufacturer Part Number: 71008-AN029

Fits 2009-2010 Nissan GT-R R35 models.

The HKS Super SQV4 (Sequential Blow Off Valve) kit utilizes a unique sequential valve structure and a differential pressure control system, allowing for a broad operating range from low boost to high boost. Unlike typical push-type relief valves that can leak under high pressure, the HKS pull-type design ensures the valve remains tightly sealed under boost, preventing leaks and maintaining consistent turbocharger performance.

This kit replaces the factory bypass valves with two HKS Super SQV4 units and high-quality polished aluminum suction piping, improving both engine bay aesthetics and throttle response by managing manifold pressure more effectively during gear shifts and deceleration.

• Sequential valve structure provides precise relief across the entire RPM range
• Polished aluminum suction pipes for increased durability and a premium finish
• Pull-type relief valve design prevents boost leaks under high pressure
• Includes 2 SSQV4 valves, polished piping, and all necessary installation hardware
• Manufacturer Part Number: 71008-AN027

Fits 1989-1994 Nissan Skyline GT-R BNR32 (RB26DETT).

The HKS Super SQV 4 (Sequential Blow Off Valve) features a unique sequential valve structure and a differential pressure relief system to provide superior boost control across a wide range of pressures. Unlike typical push-type blow off valves, the SQV 4 utilizes a pull-type relief design, ensuring the valve remains closed under boost and only opens when the throttle is lifted, preventing leaks and improving throttle response.

• Sequential Valve Construction: Employs a primary and secondary valve system to ensure rapid response at low boost and high flow capacity at high boost levels.
• Pull-Type Relief Design: Pressure is used to pull the valve open against the seat, preventing premature opening or boost leaks even at extreme pressures.
• High-Rigidity Body: Manufactured with a die-cast aluminum body and a nickel-plated secondary valve for long-term durability and heat resistance.
• Signature Triple Fin Sound: Includes the HKS Triple Fin design to produce the iconic SQV discharge sound.
• Direct Fitment: Engineered specifically for the RB26DETT engine in the BNR32 chassis for a clean, secure installation.
• Manufacturer Part Number: 71008-AN026

Fits 1995-2002 Nissan Skyline GT-R BCNR33 and BNR34 models equipped with the RB26DETT engine.

The HKS Super SQV 4 (Sequential Blow Off Valve) utilizes a unique pull-type relief structure and a differential pressure control system, which allows for stable operation across a wide range of boost pressures. Unlike standard push-type valves that can leak under high boost, the HKS pull-type design ensures the valve remains tightly closed as pressure increases. This vehicle-specific kit is engineered to replace the factory components on the twin-turbo RB26DETT, improving boost response between shifts and protecting your turbochargers from compressor surge.

• Sequential dual-stage valve operation for precise pressure relief
• Pull-type relief structure prevents premature valve opening under high boost
• Triple-fin design produces the signature HKS high-frequency discharge sound
• High-rigidity aluminum die-cast body with a silver finish
• Includes vehicle-specific mounting brackets, pipes, and hardware for a direct-fit installation
• Manufacturer Part Number: 71008-AN025

Fits 1993-1998 Nissan Silvia S14 (JDM) models equipped with the SR20DET engine.

The HKS Super SQV4 (Sequential Quality Valve) utilizes a unique pull-type relief structure and a differential pressure control system, which allows for a broad range of operating pressure from low to high boost. Unlike traditional push-type blow off valves that can leak under high pressure, the SSQV4 design uses the boost pressure to keep the valve closed, ensuring a perfect seal and consistent performance.

• Sequential Valve System: Employs a dual-valve structure (primary and secondary) for rapid response and optimal relief at any boost level.
• Pull-Type Mechanism: The valve is pulled open by vacuum, meaning boost pressure actually helps keep the valve seated tightly against the seal.
• High-Frequency Sound: Features the iconic HKS triple-fin design for a distinct discharge sound; optional inserts are available for further sound customization.
• Durable Construction: Manufactured with a high-quality aluminum die-cast body and coated components for long-term reliability.
• Direct Fitment: This kit is specifically engineered for JDM-spec S14 chassis with the SR20DET motor, including all necessary hardware for installation.
• Manufacturer Part Number: 71008-AN015

Each kit includes the Super SQV4 valve, vehicle-specific mounting pipe/flange, vacuum lines, T-fittings, and necessary hardware for a complete installation.

Fits 2008-2015 Mitsubishi Lancer Evolution X (Evo 10).

The HKS Super Sequential Blow Off Valve IV (SSQV4) Kit (71008-AM015) is a high-performance bypass valve solution designed to handle increased boost pressures while preventing compressor surge. Featuring a unique pull-type sequential valve structure and a differential pressure control system, this BOV ensures stable operation regardless of the boost level, preventing the leakage common in traditional push-type valves.

This vehicle-specific kit includes two polished aluminum charge pipes that replace the factory rubber hoses, reducing expansion under load for improved throttle response. The kit comes complete with all necessary hardware for a direct bolt-on installation to the 4B11T engine.

• HKS SSQV4 pull-type blow off valve
• Includes two polished aluminum charge pipes
• Triple-fin discharge design for distinct sound
• Pull-type valve operation prevents boost leaks under high pressure
• Complete bolt-on kit with hardware and vacuum fittings
• Manufacturer Part Number: 71008-AM015

The HKS Super SQV4 (Super Sequential Blow Off Valve) Black Edition uses a unique sequential valve structure and a differential pressure control system, allowing for a broad operating range from low boost to high boost. Its pull-type relief design ensures stable operation regardless of the amount of boost pressure, making it a reliable choice for custom turbocharged applications.

This Black Edition assembly features a matte black painted body and a black-anodized triple-fin, providing a stealthy, high-performance look for your engine bay. As a universal assembly, it is designed for custom fabrication and requires vehicle-specific adapters or flanges for installation.

• Sequential valve structure with primary and secondary valves for precision response
• Pull-type relief design prevents premature discharge and leakage under high boost
• High-rigidity die-cast aluminum body with a matte black finish
• Distinctive HKS high-frequency sound on throttle lift
• Universal assembly includes O-ring, C-clip, T-fittings, and vacuum hose
• Manufacturer Part Number: 71008-AK005

The HKS Racing SQV (Super Sequential Blow Off Valve) is a high-performance, pull-type relief valve engineered specifically for high-boost racing applications. Unlike traditional push-type blow-off valves that can leak under high pressure, the HKS Racing SQV utilizes a unique sequential valve structure and a differential pressure control system. This ensures the valve remains closed during boost and provides rapid, reliable pressure relief when the throttle is closed.

This universal unit (MPN 71008-AK004) is designed to handle significantly higher flow and pressure levels than standard SSQV units, making it a staple for large-turbocharger builds and competition use. Because it is a universal component, it requires a vehicle-specific adapter or a weld-on flange for installation on the charge pipe.

• Manufacturer Part Number: 71008-AK004
• Series: Racing SQV (Super Sequential Blow Off Valve)
• Design: Pull-type sequential valve prevents leaking under high boost
• System: Differential pressure control for precision throttle response
• Compatibility: Universal application (requires welding or adapter)
• Construction: High-capacity internals for professional racing environments