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Agency Power Billet Turbo Wheel Upgrade VF39 Turbo Subaru STI 04-07[AP-VF39GSX-STI]



Does your turbo need to be replaced in your Subaru STI?  Agency Power has the perfect upgrade to give your STI some more daily driveable horsepower with our new VF39 GSX turbo.  The billet wheel inside the stock housing features 18% more blade area for more mid to top end power.  The turbo also has the discharge pipe changed to a slip fit design.  The modification requires you to send in your stock turbo or core to be modified.  We recommend tuning and other bolt-ons to take full potential of the upgrade.


  • Requires turbo to be mailed in for modification
  • Features billet wheel inside stock housing
  • discharge pipe changed to slip fit
  • Designed for the 2004-2007 Subaru STI
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