Holley Die Cast EFI 60psi By Pass Style Black Fuel Pressure Reg # HO12-886Holley Die Cast EFI 60psi By Pass Style Black Fuel Pressure Reg # HO12 886 Holley does it again with their new die cast aluminum fuel pressure regulators. The same Holley quality that you expect at a price point that every budget can handle. 1 8" NPT barb fitting for boost reference port included. Features: Die Cast aluminum construction 3 8 NPT Inlet, Outlet, and Return ports 1 8 NPT Gauge Port 1 8" NPT Boost Reference 1: 1