The Holley 100 GPH fuel pump is built for high-performance naturally aspirated and forced-induction EFI vehicles, with -8 AN female inlet and -6 AN female outlet ORB connections for straightforward installation or replacement of a competitor pump. It's rated for use with ethanol-blended fuels (E85/E90) and all gasoline types, though pump life is reduced with 100% ethanol fuel.
Specifications:
- Free Flow: 105 GPH / 400 LPH
- Naturally Aspirated Support: up to 1,050 HP @ 8 psi / 950 HP @ 43 psi / 900 HP @ 60 psi
- Forced Induction Support: up to 800 HP @ 8 psi / 750 HP @ 43 psi / 700 HP @ 60 psi
- Inlet Size: -8 AN female ORB (3/4-16)
- Outlet Size: -6 AN female ORB (9/16-18)
- External Material: Aluminum
- Pump Body Color: Black Anodized
- Fuel Type: Gasoline / Diesel / E85
- Fuel System: EFI or Carbureted
- Application: Universal
- Part Number: 12-170
Kit includes the fuel pump, a -6 to -8 male AN discharge fitting with integral high-pressure check valve, terminal nuts, terminal boots, and installation instructions. Proper fuel system engineering is critical for maximum performance — consult Holley's Fuel System Chart for installation guidance.
FAQ
How much horsepower can the 12-170 support?
Up to 1,050 HP naturally aspirated or 800 HP forced induction, depending on target fuel pressure.
What fuels is it compatible with?
Gasoline, diesel, and E85/E90 ethanol blends; 100% ethanol fuel will diminish pump life.
What fittings does it use?
A -8 AN female ORB inlet and a -6 AN female ORB outlet.
What's included in the kit?
The pump, a -6 to -8 male AN discharge fitting with check valve, terminal nuts and boots, and instructions.

