Holley 12-426 25 GPH Mighty Mite Electric Fuel Pump
- 25 GPH flow, 1.5 to 4 PSI
- 1/8 NPT female inlet and outlet
- Street carbureted engines, universal fit
- Flange mount, gerotor design
- Gasoline fuel type
- 90 day limited warranty
Last refreshed Oct 3, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A low-pressure electric pump for street carbureted engines that run on gasoline. The pressure range is narrow, so match it to your carburetor before ordering.
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ASIN: B00JS18DXSModel: 12-426Category: Electric Fuel Pumps
Overview
Feeding a street carbureted engine at low pressure is the job of this Mighty Mite, a gerotor electric pump in an alloy steel body. A flange mount and female NPT ports at both ends handle the plumbing.
Owners with a carbureted street build get a compact, automatic-running pump sized for modest flow. The pressure window suits carburetors that want a gentle feed, and it is not meant for fuel injection.
Who it's for
Builders swapping or adding a pump on a carbureted street car with hose or hard line plumbing. Fuel injected setups and high output engines need a different pump class.
Pros and cons
- Universal fit for street carbureted setups
- Accepts hose or hard line
- Alloy steel body
- Low pressure range only
- Not for fuel injection
- Fittings and filter not listed
Performance notes
A gerotor pump moves fuel with meshing inner and outer rotors, which gives steady flow at the low pressures carburetors need. Output is set by the rated flow and pressure range, so a carburetor with higher demand will outrun it. The listing does not state a current draw.
Specifications
| Brand | Holley |
|---|---|
| Model | 12-426 |
| Dimensions & fit | |
| Inlet size | 0.31 inches |
| Outlet size | 0.31 inches |
| Item dimensions | 11.1 x 5.75 x 5.15 inches |
| Weight | 0.43 kg |
| Construction & materials | |
| Body | Alloy Steel |
| Compatibility & installation | |
| Vehicle type | Street Carbureted Applications |
| Mounting | Flange Mount |
| Warranty & support | |
| Warranty | Manufacturer's Limited 90 Day Warranty |
| Other details | |
| Fit type | Universal Fit |
| Inlet | Hose or Hard Line |
| Fuel | Gasoline |
| Operation | Automatic |
| Style | Gerotor |
| Connector | NPT |
| Outlet | Hose or Hard Line |
Frequently asked questions
Will the Holley 12-426 work with a carburetor that needs more pressure?
Only within its rated 1.5 to 4 PSI. A carburetor that calls for higher pressure needs a pump from a higher range.
Can the Holley 12-426 feed a fuel injected engine?
No. The listing places it in street carbureted applications at low pressure.
What fittings does it use?
Both ports are 1/8 NPT female. The listing does not include adapter fittings, so plan for your own.
Is it for diesel?
The spec table lists gasoline as the fuel type, so use it with gasoline.