EFI A100 Fuel Regulator w/6an ORB Inlets

The Aeromotive EFI A100 Fuel Regulator with 6AN ORB inlets is a precision inline fuel pressure regulator designed for modern EFI fuel systems and performance engine builds. This regulator maintains 40–75 psi of fuel pressure, a range suitable for high-output port-injected and direct-injected engines that demand consistent fuel delivery under varying load conditions. The black anodized aluminum body resists corrosion while the 6AN female O-ring inlet and outlet ports enable quick-disconnect plumbing with professional-grade fittings common in performance fuel system installations.

Specification highlights include a 1/8-inch NPT diagnostic port for boost-referenced pressure monitoring and a dedicated 6AN O-ring return line for safe fuel bypass at peak pressure. The regulator is fuel-agnostic, compatible with gasoline, E85 ethanol blend, diesel, and methanol, making it adaptable to alternative fuel engine platforms. Its in-line design allows installation anywhere between the fuel pump and the engine rail, providing flexibility in fuel system layout. The 0.94 lb weight and compact 5.6 × 2.8 × 5.75-inch footprint simplify mounting in tight engine bays.

This regulator serves engine builders, turbocharged and naturally aspirated performance platforms, and fuel system integrators who require adjustable pressure control and diagnostic access. The 40–75 psi window covers most street and strip EFI applications where fuel pressure stability directly impacts combustion efficiency and engine reliability. Buyers upgrading fuel systems for forced induction, engine swaps, or custom fuel injection setups will find the multi-fuel compatibility and O-ring port design essential for modern fuel system standards. The Aeromotive EFI A100 is verified by its UPC 684980008616 and MPN 13138.