SKU: TS-0205-3008 | UPC: 9329677008401
Turbosmart BOV 38mm WA/HO Alloy for 2004-2021 Subaru WRX STI
The Turbosmart BOV 38mm WA/HO Alloy delivers precise boost control for Subaru WRX STI models from 2004 to 2021 equipped with WA/HO alloy compressor housings like VF39 VF48 and VF48D turbos. This direct-fit blow-off valve offers 50 percent greater internal flow than stock to manage high boost pressures up to 30psi and eliminate compressor surge on street or track. Tuners choose it for dependable operation in demanding turbo setups.
Key Features
- Direct Fit Design: Bolts directly to OEM location on WA/HO alloy compressor housings including VF39 VF48 and VF48D turbos with no modifications required
- High Flow Piston: 38mm Nitronic 60 piston with dual O-ring seals ensures zero leaks and smooth venting up to 30psi boost
- Adjustable Springs: Supplied with 3psi 6psi and 10psi springs for precise tuning to match boost levels plus heavier options available separately
- Billet Alloy Body: CNC machined from 6061-T6 aluminum with anodized finish for lightweight strength and resistance to heat and corrosion
- Plumb Back Capability: Easily configures for atmospheric vent or recirculating plumb-back setups to comply with track regulations
Product Notes
- Verify turbo compressor housing is WA/HO alloy type before ordering
- Retain factory solenoid position or cap unused ports as needed
- Arrives fully assembled with springs for immediate tuning and installation
Installation Notes
- Professional installation recommended.
- Remove OEM BOV and transfer banjo fitting from turbo outlet
- Works with factory intercooler piping boost hoses and mounting hardware
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004-2007 | Subaru | Impreza | WRX STI |
| 2008-2014 | Subaru | Impreza | WRX STI |
| 2015-2021 | Subaru | WRX STI | All |
| 2008-2012 | Subaru | Forester | XT |
| 2005-2009 | Subaru | Legacy | GT Spec B |
Why Choose Turbosmart?
- Engineered in Australia with World Rally Championship development background
- Lifetime warranty on springs and 2-year warranty on valve body when registered
- Designed for accurate boost management in high-performance turbocharged vehicles
Frequently Asked Questions
-
Q: Will this fit my 2017 WRX STI with stock turbo?
A: Yes it bolts directly onto VF48D alloy housings found on 2008-2021 STI models replacing the OEM BOV seamlessly -
Q: What material is the body made from?
A: CNC machined billet 6061-T6 aluminum with anodized finish for long-lasting durability and corrosion protection -
Q: What warranty comes with it?
A: Lifetime warranty on springs and 2-year warranty on valve body after registration on Turbosmart website
Shipping &. Handling
- Method: UPS Ground or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Secure foam-lined box 8 x 6 x 6 inches
- Weight: 2.1 lbs
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Turbosmart
Turbosmart is an Australian performance brand that has engineered boost control, turbo management, and forced induction products since 1998. Their lineup spans blow-off valves, wastegates, boost controllers, fuel pressure regulators, gauge manifolds, and turbo system accessories trusted on street cars, circuit builds, and drag racing applications worldwide. Popular Turbosmart Products The Turbosmart product range includes the Kompact and Race Port blow-off and bypass valve series, the Dual Port recirculating blow-off valve, the Hyper-Gate and Gen-V internal and external wastegate series, the e-Boost and e-Boost Street electronic boost controllers, the FPR 800 and FPR 1200 fuel pressure regulators, and the Boost Tee manual boost controller for entry-level boost management. Turbosmart products are available for Subaru, Mitsubishi, Ford, Nissan, Toyota, and many other turbocharged platforms with vehicle-specific fitment options. What makes Turbosmart blow-off valves popular? Turbosmart...
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