Universal Adjustable EFI Aluminum Fuel Pressure Regulator Kit with 60-150 psi Gauge AN6-6AN Fuel Line Hose Fittings (Black&Red) Comes with a fuel pressure regulator, -6AN inlet ports and return port. The fuel hose made of 304 stainless steel & CPE synthetic rubber, Length: 170mm & 380mm & 660mm The hose end fitting made of high quality T6061 Aluminum and -6AN size. Comes with a 1-3/4'' | 45mm gauge & 1/8'' NPT gauge port, adjustable from 0 to 100 psi to maximum fuel pump capacity. Support high power application: 300-800 HP