Holley's 100 GPH (gallons per hour) fuel pump is designed for high performance naturally aspirated and forced induction EFI vehicles It utilizes -8 AN female inlet and -6 AN female outlet connections for easy installation on new applications and for quick replacement of existing competitor fuel pumps. The pump supports up to 900 EFI or 1050 Carb HP Compatible with Pump Gas, Race gas, Diesel or E85. The 12-170 fuel pump is rated for use with ethanol-blended fuels, (E85/E90) and all types of gasoline, but pump life will be diminished if used with 100% ethanol fuels. The inlet thread is a -8 AN female ORB (O-ring port fitting) and the discharge is a female -6 AN ORB (O-ring port fitting). A male -6 to -8 AN discharge fitting with integral high-pressure check valve, terminal nuts, terminal boots and installation instructions are included.