Turbosmart BOV 38mm WA/HO Alloy

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 &amp. 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