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  • Actively Regulates Lash Adjuster Supply Pressure to a Constant 15psi
  • Reduces Oil Flow Into the Head, Keeps More Oil in the Pan
  • Air Bleed at the Highest Point Helps Oil Quality and Aeration to Lash Adjusters
  • Does not reduce pressure to the turbocharger feed, this is still full pressure
  • Fits all 4G63 DOHC including DSM and EVO 8/9
  • 100% Made in the USA
  • Parts Normally Ship the Next Business Day