Aeromotive X1 EFI Fuel Pressure Regulator w/bypass , 13303

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Aeromotive Fuel Regulator for EFI (13303), gauge sold separately


This is the Aeromotive X1 or EFI Standard Bypass Fuel Pressure Regulator (P/N 13303).

EFI Bypass Regulator for Return Style System Specs:

  • Base fuel pressure adjustable from 35-75 PSI (most EFI systems are 60psi).
  • Vacuum/Boost reference capability.
  • 1:1 rising rate for forced induction engines.
  • Gasoline, ethanol, alcohol and diesel compatible.
  • 2 – ORB -08 inlet/outlet ports on the sides.
  • 1 – ORB -08 return port on the bottom port.
  • 1 – 1/8″ NPT Gauge Port with plug.
  • 1/16″ NPT Boost Port with 5/32″ hose barb.
  • Compatible with X1 High Flow EFI Conversion kit.
  • Compatible with X1 Carb Conversion kit.
  • 0.188″ bypass with matching spring and poppet.
  • Handles up to 150 GPH with AN-08 return line.
  • Suitable for any Aeromotive Pump up to the A1000.
  • Mounting bracket included (not shown).

X1 Regulator Service/Conversion Kits: Include Seat, diaphragm/poppet assembly and spring

We also sell the Aeromotive In-Tank Phantom Fuel Pump Modules.

1 Review

  • 5
    Must have for LS swap

    Posted by Jeff P on Jan 6th 2021

    A great solution for anyone doing a LS swap. Like everything Aeromotive, this is extremely well made. I mounted it on my firewall with the gauge and it make it super easy to adjust and read the fuel pressure.