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Adjustable billet fuel pressure regulators designed to handle the demands of the Ford 4.6L, 5.0L and 5.4L engines. Installs easily on the stock factory fuel rail. (see applications below) • Adjustable from 30-70 PSI. • Fuel pressure rises on a 1:1 ratio when referencing boost. • 1/8” NPT gauge port. • Stainless steel spring, custom-designed for precise fuel control. • Installation kit includes O-rings and gaskets.