Torque Solution TiAL Blow Off Valve Adapter w/ Plug | 2002-2019 Subaru WRX / STi (TS-SU-TIALc)

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Torque Solution TiAL 50mm Blow off Valve Adapter w/ Plug

Torque Solution Billet Tial 50mm Blow off Valve Adapter allows you to direct fit your blow off valve to your Subaru TMIC without any welding or modifications at all.

The aluminum bypass plug allows you to plug the hose or intake tube which recirculates when going from non atmospheric recirculating BOV to an atmospheric blow off or diverter valve.


  • CNC machined 6061-T6 billet aluminum
  • Installs in under 30 minutes
  • Direct Fitment


  • 2002-2007 Subaru WRX
  • 2004-2019 Subaru STI

What's In The Box?

  • (1) BOV Adapter Flange
  • (1) Plug


  • Manufacturer Lifetime Warranty

Customer Reviews

Based on 3 reviews
David Block
Solid adapter!!!

It fit my Tial QR BOV/BPV perfectly! And installed in my grimmspeed TMIC easily absolutely no leaks or issues. Only thing I would suggest is look into custom hose or into making your own since running a stock location BOV with the adapter won’t reach the stock recirculating hose.

Tylar H
TS tial bov adaptor

I purchased this adaptor for my tial q bov for my 11 sti just days before my tune, fit was perfect, came nicely packaged, and on time!, fit is perfect, no issues, only cons which is just me being nit picky, was the flange had some nics in it, and looked like it was hit off something, no big deal though, I also bought the grimmspeed 3x thicker gasket when I purchased the adaptor, but when I unboxed it all, to my surprise which is another pro to me, the flange is actually o ringed!, so no need for a gasket as the flange seals to the inter cooler via the o ring, really nice little touch honestly, shipping was fast, fitment is great, and looks really nice! overall happy with my purchase


Works flawlessly. Fits the stock top mount. Was able to use my Tial q bov with stock intercooler