Overview Holley EFI bypass fuel pressure regulator kits are part of a complete line of fuel system products from Holley. The included 12-882 EFI Fuel Regulator features a die cast aluminum body and a chrome finish for corrosion resistance and clean appearance. The regulator contains 3/8" NPT inlet/outlet ports, 3/8" NPT return port, 1/8" NPT gauge port, and a 1/8" NPT vacuum port for Boost Reference (1:1). In addition, 3 Earl's 3/8" NPT to -6 AN fittings, a barbed fitting for the vacuum port, a mounting bracket, and all necessary hardware are also included in the kit. Features Die cast aluminum construction with chrome finish Adjustable from 15-60 PSI for precise fuel pressure adjustments 60 PSI preset pressure Used in return style systems with a line back to the fuel tank 3/8” NPT inlet/outlet ports 3/8" NPT return port 1/8” NPT gauge port Earl's fuel pressure gauge (100187ERL) Earl's 3/8” NPT to -6 AN fittings (AT981666ERL x3) 1/8" NPT boost reference (1:1) and barbed fitting Mounting Bracket Included TECHNICAL SPECS Pressure Range 15-60 PSI