Fuelab Fuel Pressure Regulator

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FUELAB's 535 and 545-series regulators are known for their small size, full E85 compatibility, broad adjustment range and use of standard -6AN union fittings. They are the perfect choice for users who need to accurately control a large fuel pump (DW300 or larger), or for users who need to adjust their base fuel pressure.

  • Billet aluminum design 
  • 1/8" NPT external gauge port 
  • 25-90psi adjustment range (most others only allow 70psi) 
  • 1:1 boost reference port 
  • Fully E85 compatible 
  • 535-series regulators are used in returnless systems (1999-2005)
  • 545-series regulators are used in return systems (1990-1997)