X1 Fuel Regulator Black 35-75psi w/.313 Seat

The X1 Fuel Regulator Black 35-75psi w/.313 Seat from Aeromotive is a precision fuel pressure control component engineered for high-performance fuel systems and custom engine builds. This regulator serves as the critical link between your fuel pump and injectors, maintaining consistent fuel pressure across varying engine loads and RPM ranges. Whether you're tuning a naturally aspirated engine, installing a supercharger, or running a turbocharged application, fuel pressure stability directly impacts cold-start performance, idle quality, and peak power delivery.

This regulator utilizes a 0.313-inch seat design paired with an adjustable 35–75 psi operating range, giving you fine control over fuel delivery without compromising system responsiveness. The sealed, pressure-balanced design compensates for changes in fuel temperature and pump output, preventing pressure creep that can lean out your tune or cause injector spray pattern degradation. Aeromotive's robust construction ensures reliable operation in both street and competition environments, with a compact footprint that facilitates straightforward installation in engine bays with tight packaging constraints.

Mechanics and tuners favor this regulator for carbureted-to-fuel-injection conversions, boost-referenced builds, and stock-to-modified engine upgrades where OEM pressure characteristics no longer suit the new fuel system or injector sizing. The 35–75 psi range accommodates everything from mild port-injected applications to aggressive direct-injection platforms, making it a versatile choice for custom shops and serious enthusiasts. Installation pairs with standard SAE inlet and outlet ports, allowing integration into existing hardline systems or Aeromotive fuel rails and components for seamless system compatibility.