Speedway Motors Aluminum Fuel Pressure Regulator, 1–4 PSI Low-Pressure Inline Regulator with 3/8 Inch NPT Inlet and Outlet, Universal Fit for Carbureted Fuel Systems, Black Finish

1-4 PSI Fuel Pressure Regulator This non-return fuel pressure regulator provides serious bang for your buck. Cast from lightweight aluminum, the internal spring and diaphragm are composed of high-quality materials to guarantee consistent and reliable performance. Universal application. 1-4 PSI non-return style. 3/8" NPT on the Inlet and Outlet. Cast Aluminum.

• Adjustable Low-Pressure Control – Delivers a consistent 1–4 PSI output, ideal for maintaining proper fuel supply on carbureted engines without overpowering the needle and seat.
• Durable Aluminum Construction – Cast from lightweight aluminum for dependable strength and long service life while maintaining a compact, easy-to-mount design.
• Universal Inline Compatibility – Works with a wide range of carbureted setups and installs easily into existing fuel systems using standard plumbing components.
• 3/8-Inch NPT Ports – Features 3/8-inch NPT inlet and outlet fittings for straightforward integration into common fuel line configurations.
• Reliable Non-Return Style – Simple, efficient design uses a spring-and-diaphragm assembly to provide stable pressure regulation with minimal maintenance.