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

#42512427

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

Name: Holley 12-427 32 GPH Mighty Mite Electric Fuel Pump, 4-7 PSI
Brand: Holley
SKU: 42512427
Price: 80.05 USD
Availability: InStock
Rating: 4.9 (19 reviews)

19 Reviews

4 Questions

A reliable solid state design provides longer life
Has a 12 volt operation and 4-7 psi operating pressure
It is good for up to 400HP naturally aspirated engines

Pressure Range:

4 - 7 PSI

1.5 - 4 PSI

$80.05

/each

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Product Summary

Universal Fit, External Electric Fuel Pump Type, Steel

A reliable solid state design provides longer life
Has a 12 volt operation and 4-7 psi operating pressure
It is good for up to 400HP naturally aspirated engines
Compatible with all fuels and fuel additives (gas, diesel, blended alcohol, ethanol, e-85)
Engineered and matched performance with Holley®, Demon®, Quick Fuel® and Edelbrock® carburetors

See more details

Key Specs

MFG. Part #	12-427
Electric Fuel Pump Type	External
Free Flow Rate	32 GPH / 121 LPH
Maximum Pressure	7 psi
Voltage	12 volts

See more specs

Need To Know

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855.313.9176

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Holley 12-427 Details

Holley pumps have fueled more performance engines than all others and the Holley line keeps on growing! Holley is proud to introduce the all new Holley Mighty Mite electric fuel pumps! They're big on performance, but small in size! They're quiet, easy to install and work with gas, diesel, blended alcohol and E85!

12 volt operation
4-7 psi operating pressure
32 gal/hr flow
Good for up to 400HP naturally aspirated
Reliable solid state design provides longer life
Compatible with all fuels and fuel additives (gas, diesel, blended alcohol, ethanol, e-85)
Simple 2 wire hookup
Self-priming and regulating
12 dry lift capable
Quiet operation - 65db
Great for carbureted trucks, cars, generators and agricultural equipment - also makes a great transfer pump
Engineered and matched performance with Holley®, Demon®, Quick Fuel® and Edelbrock® carburetors(all trademarks are property of their respective owners. Edelbrock is a registered trademark of Edelbrock,LLC)
Comes with fuel filter, fittings and mounting hardware
Made in the USA

Included Items

Qty. 1 – Fuel Pump
Qty. 1 – In-line Fuel Filter
Qty. 1 – 5/16” Fuel Line Fittings
Qty. 2 – 1/4” Hex Self-Tap Screws
Qty. 2 – 1/4” Nuts

When a lower fuel pressure is required when using this fuel pump, please consider the following low pressure regulators:

Holley 427-12804
Offenhauser 560-58500
Quick Fuel 424-30804QFT
Spectre 465-2518
Mr Gasket 550-9710
Edelbrock 325-1789

Guides & Documents

Electric Fuel Pumps Installation Instructions (42512427)

WARNING:

Cancer and Reproductive Harm – www.P65Warnings.ca.gov

Holley 12-427 Specifications

KEY SPECS
MFG. Part #	12-427
Brand	Holley
Electric Fuel Pump Type	External
Free Flow Rate	32 GPH / 121 LPH
Maximum Pressure	7 psi
Voltage	12 volts

GENERAL
Inline	No
Fuel System Type	Carbureted
Fuel Type	All Fuel
Electric Fuel Pump Inlet Fitting(s)	1/8" NPT Female
Electric Fuel Pump Outlet Fitting(s)	1/8" NPT Female
Material Type	Steel
Color	Black
Fuel Pressure Regulator Included	No
Sending Unit Included	No
Application	Universal
Gasket(s) Included	No
Wiring Harness Included	No
Mounting Bracket Included	No
Mounting Hardware Included	Yes
Sold in Quantity	Kit
GTIN Code	090127687239

Ratings & Reviews

4.9

19 Reviews

Overall Assessment

Customers have consistently highlighted the product's simplicity and ease of installation, compact size, and effective function despite its small size. A key feature repeatedly mentioned is its super quiet operation and its self-regulating pressure. The fuel pump's lift capability and ability to perform well even in older vehicle models further underscores its quality and practicality. Customers admire its instant priming feature, contributing to faster start-ups. It has made a noticeable difference for those switching from manual fuel pumps, with its superior functionality praised in comparison to other fuel pumps on the market.

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4.9

19 reviews

Filter by Ratings

Sort Reviews

Great quality, works as it should

5.0

3 months ago

Avis

PHX AZ

Verified

Have this feeding a Ford 302 in my 49 Studebaker. Does the job well.

Would Recommend

I would buy this again.

5.0

5 months ago

darkhorse

Edmond , OK

Verified

used in 1951 dodge p/u. with 400 big block.

Would Recommend

Nice upgrade from a mechanical fuel pump on a classic truck

5.0

6 months ago

BCB

Milwaukee, WI

Verified

My wife bought a 1951 pickup that I get to restore (not as exciting as it sounds). I'm going through the entire truck with the goal of making it safer and easy for her to drive anytime. Part of that includes a new fuel system (tank, lines, carb rebuild, ultra fine fuel filtration) and this electric fuel pump. Solid construction, feels quite durable.

Would Recommend

Yes

5.0

11 months ago

Zinger

Omaha ne

Verified

Back up pump in the hot temp days of summer from vapor lock

Would Recommend

Not for my application

5.0

2 years ago

Bill

Globe Arizona

Verified

It was easy to install, but for my application did not work out.

Would Recommend

Super quiet-winner

5.0

3 years ago

49 Ford F1

Verified

Simply install, super quiet, does the job

Would Recommend

Fuel pump wont last

5.0

4 years ago

Carnutt

Pennsylvania

Verified

Stock spec pumps not making 8k miles. Used this unit with good results so far

Would Recommend

I would buy this product again.

4.0

4 years ago

Lee Butler

Las Vegas Nv.

Verified

This Product is used on a 1965 Chevy Suburban. It was an easy install, and works great.

Would Recommend

Impressed by the fuel pump

5.0

5 years ago

Jay

Arnold, MO

I bought this as a temporary pump for my mild 454 in my truck. I bought it because it was self regulated at 4-7 PSI and the compact size. I was impressed that it's barely audible from 5 feet away.

Would Recommend

great pump

5.0

5 years ago

rdm

PSL, Fl

Verified

great pump has good lift capability

Would Recommend

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Showing 10 of 19 reviews

Questions & Answers

4 Questions • 5 Answers

Sort Questions

Can this pump be used as only a primer pump? If not do you have a pump for priming the mechanical pump, that will pass fuel through when turned off.

by Decky69

• 3 years ago

1 answer

View Answer

Is the Holley 12-427 32 GPH Mighty Mite Electric Fuel Pump, 4-7 psi ideal for a chevy 383 stroker? It's for my 1937 chevy 2 door sedan project. Is the 4-7 psi fuel pressure ideal and will I need a fuel regulator?

by Ray

• 7 years ago

1 answer

View Answer

What size hose fits these barbs?

by BackwoodsHellraiser

• 9 years ago

2 answers

View Answers

What are the non metal materials used on this pump? O-rings, housing, etc??

by Greg

• 10 years ago

1 answer

View Answer

4 of 4 questions shown