TIAL QBOV 11psi Spring (Blue)


TIAL Q Blow Off Valve


  • For use on turbo-charged. The body and all internal components are CNC-machined from 6061 aluminium alloy. It features a large 1.98 in (50.5mm) valve.
  • The V-Band design aluminium mounting clamp gives a very clean and unique appearance. The clamp uses Stainless Steel hardware for a long lasting, corrosion-free appearance.
  • The valve seal utilises a Viton O-ring that is clamped in place to prevent the possibility of sticking to the seat and pulling out. The valve stem and guide are Teflon-lubricated, hard anodise-coated for wear resistance.
  • The Blow Off Valve also comes with our own machined aluminium banjo-type air fitting and bolt, with over sized 10mm hose barb for quick actuator response. The actuator has a high temp silicone Nomex-reinforced diaphragm for long life.
  • An aluminium or mild steel weld base mounting flange is furnished with each unit. Stainless Steel is available at an additional cost. The use of 6061 aluminium allows the housing to be anodised with a selection of colours.
  • Through countless hours of R&D we were able to make the same size valve flow a staggering 60% more than the original design - that means 60% more air is blown off per cycle! This is among the highest flowing BOV on the market.
  • Color anodised aluminium options (Silver, Red, Blue, Purple, Black).
  • A single Q BOV can support up to 1,800hp

Flange Materials

Aluminium, Mild Steel, Stainless

Pipe Size

Flange cut for 2.5" IC pipe


Black, Blue, Red, Purple, Silver

Spring Pressure



M10 x 1.0

SKU: TIA QBOV Category: All Tags: brand_TiAL type_Engine Product ID: 1627369603135

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