Holley 12-879 Adjustable Billet By-Pass Regulator-3/8" NPT
Adjustable billet by-pass return style fuel pressure regulator 3/8" NPT Boost Reference - 1:1;Adjustable from 4-65 psi for precise fuel pressure adjustments; Constructed of billet aluminum with a black anodized base and a clear anodized top for good looks; Used in systems with a return line back to the tank; (1) 3/8” NPT Inlet; (1) 3/8” NPT Outlet; and (1) 3/8” NPT Return Port; Includes fitting for manifold reference; Includes an 1/8 NPT gauge port; Boost Reference - 1:1; The 4-15 psi carbureted spring comes installed in the regulator; Compatible with diesel fuel and E85;
