Adjustable Billet By-Pass Regulator-3/8 NPT - 12-879 steel 5-inch outlet diameter offers improved

5-inch outlet diameter offers improved flow for maximum performance from a cast iron exhaust manifold

V6 GAS OHV Naturally Aspirated 1999 Chevrolet Silverado 1500 LT Extended Cab Pickup 3-Door 4

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Adjustable Billet By-Pass Regulator-3/8 NPT - 12-879 steel 5-inch outlet diameter offers improvedOverview: Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. They are precision machined from 6061 T6 billet aluminum for strength and durability. These regulators are adjustable from 4 65 psi and will handle both carbureted and EFI applications. A second pressure spring is included allowing you to increase the fuel pressure range up to 65 psi for EFI systems. They are offered with two port sizes, 3