Spectre Performance 2518 Fuel Pressure Regulator Adjustable through a pressure range of 1 psi to 4 psi Bright plated finish 3/8 In. barb fittings and mounting hardware included Made from high quality material Use with 2515 or 59013 fuel pressure gauge Adjustable through a pressure range of 1 psi to 4 psi Bright plated finish 3/8 inch barb fittings and mounting hardware included Made from high quality material Use with 2515 or 59013 fuel pressure gauge