Holley 12-427 Mighty Mite Electric Fuel Pump | 32 GPH, 4-7 PSI, 12V

Holley 12-427 Mighty Mite Electric Fuel Pump

Compact yet capable, the Mighty Mite from Holley is designed to fit tight engine bays while delivering dependable fuel flow for everyday driving and modest performance builds. Its 12-volt operation makes it a drop-in candidate for many vehicles, helping maintain consistent fuel delivery as engine demands change during driving, acceleration, and varied loads.

Key specifications

• 12-volt operation for straightforward integration with most vehicles
• 4-7 psi operating pressure to align with many carburetor and EFI applications
• 32 gal/hr flow for reliable fuel transfer under common driving conditions
• Good for up to 400 HP naturally aspirated engines as a general guideline
• Reliable solid-state design aimed at longer life and steady performance

Real-world use and installation

Ideal for retrofit projects in classic cars, small-block builds, and street machines where space is at a premium. The pump’s compact form helps with clean mounting under seats, behind dashboards, or in small trunk spaces, while standard electrical connections support a straightforward setup. Expect a steady fuel supply that pairs well with routine maintenance and tuning routines.

• Great for retrofit projects needing a compact, self-contained pump
• Suitable for engines with moderate power without aggressive forced induction
• Pairs well with typical fuel lines and filters in aftermarket installations

Why choose the Holley Mighty Mite

Holley’s legacy in performance components informs the Mighty Mite’s design, prioritizing reliable operation and practical flow rates. This pump offers a flexible option for builders seeking dependable fuel delivery without overextending a budget. Consider it for everyday driving, hobbyist builds, or OEM-replacement style applications where space and reliability matter.