Treadstone Performance

Treadstone Turbo Oil Supply Feed Line Kit | 2004-06/08-2012 Subaru STi (OSTI)

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2004-2006/2008-2012 STi Turbo Oil Feed Line by Treadstone

Subaru WRX STi Turbo Oil Supply Feed line Kit. For those of you who are building your own turbo kits and need a braided oil supply line, we have the solution for you. The STi factory oil supply hard line takes a special adapter that we manufactured into a one piece line. Oil line comes with a 90 degree fitting with 1/8" NPT to screw into most turbo oil inlets. This is used on 04-06 STi and 08 to 2012 STi's. 07 was the odd ball year, and uses a banjo style hook up like the WRX.


  • Braided oil supply line
  • Designed for use with custom turbo kits


  • 2004 - 2006 Subaru Impreza WRX STi (NO 2007)
  • 2008 - 2012 Subaru Impreza WRX STi (NO 2007)

What's In The Box?

  • 1 - Oil Feed Line
  • Necessary Hardware (if applicable)
  • Instructions/Manuals (if applicable)
  • Warranty Information



Treadstone Performance Warranty

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