Holley fuel pressure regulators are designed to precisely control the fuel pressure from the fuel pump to the carburetor, Each Holley fuel pressure regulator is fully adjustable so regulating the fuel pressure to your engines needs is a simple task, The Holley 12-803BP fuel pressure regulator features 3/8" NPT in/out ports and a 3/8" NPT return port, These chrome plated push-on brass fittings are the perfect finishing touches for your fuel system, All fittings are male hose barb to male pipe thread.
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