50 GPH Holley Mighty Mite Electric Fuel Pump, 12-15 PSI

Street, Agriculture, and Construction Applications Compatible with all fuels and fuel additives

PART# 12-429

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Pump must be properly fused with a 3- to 5-Amp automotive-type fuse.


Pumps are designed for use on all low and high pressure carburetor equipped automobiles, trucks, vans, generators, agriculture, gasoline and diesel engines, marine, construction and agriculture utility equipment. The 12 volt pumps perform in a 12-15 psi range at 50 GPH. Can be used as a lift / priming pump for most diesel engines. Compatible with all fuels and additives. These pumps can be a perfect OE replacement for any of your equipment. Rugged solid state design pumps are a simple two wire hook-up and made in the USA. A regulator may be needed for carbureted applications requiring less fuel pressure. We recommend the Holley 12-803 or 12-804 fuel pressure regulator. Overall dimensions- 4"x 3"x 3"


  • 60” Dry lift/ 12-15 PSI / 50 GPH
  • Self-Priming and Self-Regulating
  • Compatible with gasoline, diesel, bio diesel, E85, blended alcohol and fuel additives
  • Operating temperature range of -40F to + 180F
  • UL Certified
  • Meets Coast Guard Ignition Protection Test Requirements 33CFR183.410 and Fire and Thermo Shock Test Requirements 33CFF183.590
  • Corrosion resistant over 100 hours of salt spray


BrandMighty Mite
Emission Code3
Free Flow GPH50
Fuel SystemCarbureted
Fuel TypeDiesel
Inlet Thread1/8" NPT
Outlet Thread1/8" NPT
Product TypeFuel Pump
Part Number12-429


This part is legal for use on Uncontrolled (Non-Emissions Controlled) Vehicles or Racing Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

Racing Vehicles are vehicles that are used exclusively for racing or other forms of competition that are not registered and that may never be used on the street.

Tech Resources

Pump must be properly fused with a 3- to 5-Amp automotive-type fuse.
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        *Free Shipping & Handling only offered to the contiguous US on orders over $100.

        Some parts are not legal for use in California or other states with similar regulations.