Check the listing for details. Aeromotive 13139 A1000 EFI Fuel Pressure Regulator (2) -8AN O-Ring Inlet Ports (. Condition: New. Listed at 200.69 USD. Gen-II A1000 EFI Regulator(2) -8 AN O-Ring Inlet Ports(1) -6 AN O-Ring Return PortAdjustable from 40-75 psiGas, Ethanol, Methanol, Diesel Compatible1:1 Vacuum/Boost Reference Capable1/8 in. NPT Gauge PortBlack Anodized Finish This Aeromotive 13139 next-generation A1000 EFI regulator features legendary Aeromotive flow and pressure control in a new body, profiled for reduced size and weight. The patented design features a deep, bright-dip black anodized finish on the cap and base, with AN spec ORB (o-ring boss) style inlet/outlet and return ports. In addition to the aesthetic enhancements, this next-generation version A1000 regulator provides a distinct visual cue that you've purchased a genuine Aeromotive EFI regulator, ensuring our valuable customers are not.