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Product Details
| Part Number: | 71008-AH010 |
| Brand: | HKS |
Upgrade boost-pressure control and add the unmistakable HKS blow-off valve sound to your turbocharged Civic with the HKS Super SQV IV Return Kit Plus, Part #71008-AH010. Designed specifically for select 10th-generation Honda Civic 1.5L turbo applications, this complete vehicle-specific kit combines HKS's proven Super Sequential Blow-Off Valve technology with the components necessary for a clean, direct-fit installation and recirculated bypass configuration.
Unlike conventional push-type blow-off valves, the HKS Super SQV IV uses a pull-type valve design with differential-pressure control. This allows the valve to remain securely sealed under boost while responding quickly when the throttle closes. HKS's sequential valve structure is engineered to operate effectively across a broad range of boost pressures without requiring manual spring adjustment.
Part number 71008-AH010 includes the recirculation setup, allowing discharged pressurized air to be routed back into the intake tract rather than simply vented to atmosphere. This provides a more OEM-style bypass arrangement while retaining the performance, appearance, and distinctive character of the HKS SSQV IV.
Features
- Genuine HKS Super SQV IV vehicle-specific blow-off valve kit
- Designed for select 10th-generation Honda Civic 1.5L Turbo applications
- Complete Return Kit Plus configuration
- Includes the components required to recirculate discharged boost pressure back into the intake
- HKS sequential valve structure provides precise boost-pressure relief
- Differential pressure control system operates effectively from low to high boost
- Innovative pull-type relief valve design
- Pull-type operation helps maintain a strong seal as boost pressure increases
- Requires no manual spring-pressure adjustment
- Quickly releases excess charge pressure when the throttle closes
- Helps control compressor surge during sudden throttle closure
- Designed to provide stable operation across a broad boost range
- Produces the distinctive, sharp HKS SSQV sound
- Recirculating configuration provides a more subdued sound than a full atmospheric setup
- Silver HKS SSQV IV provides a premium appearance in the engine compartment
- Includes an application-specific SSQV charge pipe
- Includes vehicle-specific mounting brackets
- Includes silicone/rubber couplers and connecting hoses
- Includes necessary hose clamps, vacuum hose, fittings, caps and installation hardware
- Recirculation fitting and hose components included
- Compatible with both manual and CVT applications within HKS's specified fitment range
- Vehicle-specific construction provides a cleaner installation than adapting a universal BOV
- Suitable for stock and modified turbocharged Civic builds
- Genuine HKS performance product
HKS Super Sequential Valve Technology
- The Super SQV IV's operation is one of the features that separates it from a conventional blow-off valve. HKS combines a sequential valve structure with differential-pressure control, allowing the valve to respond over a wide range of operating conditions.
- Its pull-type relief mechanism is designed so that boost pressure helps maintain the valve seal rather than working against it. This provides stable operation regardless of boost pressure and eliminates the need for the spring adjustments commonly associated with traditional aftermarket blow-off valves.
- When the throttle closes after acceleration, excess pressure in the charge piping must be relieved. The SSQV IV responds rapidly to this pressure change, releasing the excess charge pressure and helping control compressor surge.
Recirculation Return Kit Plus
- An important distinction with 71008-AH010 is that this is the recirculating version of HKS's Civic SSQV IV kit.
- Rather than discharging all relieved boost pressure directly into the engine compartment, the supplied return components allow the air to be routed back into the intake system, similar in principle to the factory bypass-valve arrangement. HKS specifically lists 71008-AH010 as including the suction/recirculation return components.
- For comparison, 71008-AH011 is the corresponding version that does not include the suction-return setup.
Vehicle Fitment
HKS's Japanese application chart lists 71008-AH010 for the Civic FC1 with L15B and Civic FK7 with L15C, covering its specified 2017/09–2019/12 production range. HKS states that the kit is compatible with both MT and CVT and includes the recirculation hose. HKS also specifically notes that its listed application is not compatible with models after the 2020 change.
HKS USA currently catalogs 71008-AH010 for U.S.-market L15B7 applications including the 2017–2021 Civic Hatchback and 2017–2020 Civic Si Coupe/Sedan. Because the Japanese and U.S. HKS catalogs differ slightly in model-year coverage, customers should verify compatibility by chassis, model year, engine, and market before ordering.
- Engine: L15B/L15B7/L15C 1.5L Turbo, depending on market
- Chassis: FC1 / FK7 and applicable 10th-generation Civic configurations
- Transmission: Manual and CVT on specified applications
- Does Not Fit: FK8 Civic Type R; HKS specifies a different SSQV application for the K20C-powered Type R.
Product Specifications
- Manufacturer: HKS
- Part Number: 71008-AH010
- Product: Super SQV IV Return Kit Plus
- Valve Type: Sequential Blow-Off / Bypass Valve
- Valve Design: Pull-Type
- Pressure Control: Differential Pressure
- Valve Finish: Silver
- Application: Honda Civic 1.5L Turbo
- Recirculation Setup: Yes
- Vehicle-Specific Installation Kit: Yes
- Manual Transmission Compatible: Yes
- CVT Compatible: Yes, on applicable models
Complete Vehicle-Specific Kit
- HKS's installation manual shows that 71008-AH010 is considerably more than just the SSQV valve itself. The package includes the SSQV assembly, application-specific SSQV pipe, SSQV bracket, hose bracket, SSQV hose, connecting hoses, multiple hose clamps, mounting hardware, vacuum/pressure hoses, air filter, caps, joint pipe, fitting flange, gasket, orifice, T-fitting, recirculation fitting, tie wraps and installation manual.
- That comprehensive hardware package is what makes AH010 particularly attractive for Civic owners who want an HKS SSQV without piecing together a custom charge-pipe and recirculation arrangement.
Installation Note
- HKS recommends that installation be performed by a qualified professional. Proper routing of the vacuum/pressure reference lines, recirculation plumbing and charge piping is essential for correct valve operation.
- Because HKS's U.S. and Japanese catalogs show slightly different year ranges, verify your exact Civic model, chassis, engine and production year before ordering, particularly on 2020–2021 vehicles.
The HKS 71008-AH010 Super SQV IV Return Kit Plus is an excellent upgrade for turbocharged Civic owners looking for the combination of HKS sequential valve technology, stable pull-type operation, distinctive SSQV sound, complete vehicle-specific hardware and an OEM-style recirculating configuration.
Due to the manufacturer's price control policy, this item may be excluded from promotions and discounts
WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. www.P65Warnings.ca.gov.
Vehicle Fitment
| Year | Make | Model | Trim |
|---|---|---|---|
| 2016 | Honda | Civic | EX-L |
| 2016 | Honda | Civic | EX-T |
| 2016 | Honda | Civic | Touring |
| 2017 | Honda | Civic | EX |
| 2017 | Honda | Civic | EX-L |
| 2017 | Honda | Civic | EX-T |
| 2017 | Honda | Civic | LX |
| 2017 | Honda | Civic | Si |
| 2017 | Honda | Civic | Touring |
| 2018 | Honda | Civic | EX |
| 2018 | Honda | Civic | EX-L |
| 2018 | Honda | Civic | EX-T |
| 2018 | Honda | Civic | Si |
| 2018 | Honda | Civic | Touring |
| 2019 | Honda | Civic | EX |
| 2019 | Honda | Civic | EX-L |
| 2019 | Honda | Civic | Si |
| 2019 | Honda | Civic | Touring |
| 2020 | Honda | Civic | EX |
| 2020 | Honda | Civic | EX-L |
| 2020 | Honda | Civic | LX |
| 2020 | Honda | Civic | Si |
| 2020 | Honda | Civic | Touring |
| 2021 | Honda | Civic | EX |
| 2021 | Honda | Civic | EX-L |
| 2021 | Honda | Civic | LX |
| 2021 | Honda | Civic | Touring |
| 2022 | Honda | Civic | EX-L |
1 Reviews ★★★★★
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Jordan B | August 17th, 2026
It’s a sweet piece of ear and eye candy in the engine bay. Iconic sound and works great. I love me some HKS
