
Fuel Pressure Regulator 1-4Psi is a fuel-pressure regulator for controlling fuel pressure within the listed range. Carburetors and other fuel systems need pressure that matches the component design; too much pressure can overwhelm the needle and seat, while too little pressure can starve the engine under load.
Use this regulator only with a fuel system whose pressure, flow and fuel type match the part’s intended range. Final pressure should be verified with a gauge at the engine.