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The HKS 08-11 STi SSQV4 BOV kit is designed for the 2008-2011 Subaru Impreza. Match manufacturer part number 71008-AF013, the complete vehicle or system configuration, dimensions, connections, and included components before ordering.
Key Features
- Lightweight Die-Cast Aluminum: Titanium-like black anodized finish resists corrosion, weighs only 1.1 lbs for the valve alone to cut hood-down weight.
- Adjustable Spring Preload: Five included springs allow tuning from 5-29 psi, matching stock ECU or aftermarket maps precisely.
- High Flow Capacity: Handles 500+ hp setups with minimal restriction, supporting larger turbos and increased boost pressures common in STI tuning.
- STI-Specific Piping Kit: Custom aluminum pipe with O-ring seals connects directly to factory turbo outlet and intake manifold for leak-free performance.
- Uses factory mounting holes and includes stainless hardware for secure fit.
- Yes, direct fit for all USDM 2008-2011 Impreza WRX STI sedan and hatchback variants with EJ257 turbo.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2008-2011 | Subaru | Impreza | Confirm engine, body style, system configuration, and exact interface |
Specifications
| Brand | HKS |
|---|---|
| Manufacturer Part Number | 71008-AF013 |
| Product Type | Blow Off Valves |
| Fitment Type | Vehicle Specific |
| Condition | New |
What's Included
One new HKS blow off valves identified by manufacturer part number 71008-AF013, in the quantity stated by the title. Additional wiring, pipes, hoses, clamps, fittings, gaskets, fluids, tuning, tools, and installation hardware are included only when expressly listed for this exact part number.
About HKS
HKS develops exhaust, forced-induction, cooling, engine, electronics, and exterior components for import and performance vehicle applications.
Related HKS Products
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Frequently Asked Questions
How do I confirm this HKS airflow or boost part fits?
Match the manufacturer part number, listed vehicle, engine and turbo configuration, piping diameter, connector, mounting points, and available installation space.
Will tuning be required after installation?
Calibration needs depend on the product, vehicle, boost target, sensors, fuel system, and supporting modifications. Confirm the complete setup with a qualified tuner before operation.
Are all pipes, couplers, valves, and hardware included?
Included components vary by exact part number. Use the What’s Included section and current HKS documentation to identify any separate piping, couplers, clamps, sensors, or adapters.
Installation Instructions
Follow the current HKS instructions and the vehicle service manual for part number 71008-AF013. Compare every component, connection, dimension, and mounting point before disassembly. Use the correct tools, fasteners, torque values, fluids, wiring protection, and safety procedures, then inspect for leaks, interference, heat exposure, clearance, and secure operation before normal use.
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