-18%

Powermaster 77491 Alternator, 120 Amps, Serpentine, 12V, Ford

-18%

#25577491

Powermaster 77491 Alternator, 120 Amps, Serpentine, 12V, Ford

Name: Powermaster 77491 Alternator, 120 Amps, Serpentine, 12V, Ford
Brand: Powermaster
SKU: 25577491
Price: 226.99 USD
Availability: InStock

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Amperage:

120 Amp

155 Amp

Finish:

Natural

Chrome Polished

$226.99

/each

In Stock

$277.50

Save $50.51

Quantity

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Product Summary

One Wire Alternator, Ford 3G Alternator Case Style

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Key Specs

MFG. Part #	77491
One Wire Alternator	Yes
Alternator Amperage	120 amp
Alternator Finish	Natural
Pulley Style	Serpentine

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Need To Know

Need help?

855.313.9176

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Quick and Easy Returns

Return Policy

Powermaster 77491 Details

Powermaster has a variety of alternators available for various applications.

Alternator
Ford 3G
100 Amp
Small Case
One Wire
Natural

Application

Ford 144ci Inline Six
Ford 170ci Inline Six
Ford 170ci Inline Six
Ford 2.3ci Inline Four
Ford 2.8ci V6
Ford 2.9ci V6
Ford 200ci Inline Six
Ford 200ci Inline Six
Ford 240ci Inline Six
Ford 240ci Inline Six
Ford 250ci Inline Six
Ford 255ci Small Block V8
Ford 260ci Small Block V8
Ford 260ci Small Block V8
Ford 289ci Small Block V8
Ford 289ci Small Block V8
Ford 2ci Inline Four
Ford 3.8ci V6
Ford 300ci Inline Six
Ford 300ci Inline Six
Ford 302ci Small Block V8
Ford 302ci Small Block V8
Ford 332ci FE V8
Ford 351C ci Small Block V8
Ford 351C ci Small Block V8
Ford 351Cci Small Block V8
Ford 351Mci Small Block V8
Ford 352ci FE V8
Ford 360ci FE V8
Ford 390ci FE V8
Ford 3ci V6
Ford 400ci Small Block V8
Ford 406ci FE V8
Ford 406ci FE V8
Ford 427ci FE V8
Ford 428ci FE V8
Ford 429ci Big Block V8
Ford 429ci Big Block V8

Charts

Installation Instructions (PDF)

Guides & Documents

Selecting the Right Wire Size for Automotive Alternator to Battery Applications

Alternators Installation Instructions (25577491)

Installation Instructions (Powermaster)

Warranty (Powermaster)

Technical Information (Powermaster)

Warranty Information

Click for details

Do not send the unit back to Speedway Motors unless you have called Powermaster and talked to their Tech Department while the unit was still on the vehicle so they could help you troubleshoot the problem.

CA Prop 65

Powermaster 77491 Specifications

KEY SPECS
MFG. Part #	77491
Brand	Powermaster
One Wire Alternator	Yes
Alternator Amperage	120 amp
Alternator Finish	Natural
Pulley Style	Serpentine
Belt Type	Serpentine and V-Belt

GENERAL
Alternator Case Style	Ford 3G
Voltage Required	12-Volt
Regulator	Internal
Regulator Style	Internal
Regulator Included	Yes
Alternator Pulley Included	Yes
Alternator Brackets Included	No
Color	Natural
Sold in Quantity	Each
Notes	Made in the USA
GTIN Code	692209009689
Belt Included	No

Ratings & Reviews

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Questions & Answers

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Fitment

1964 AC Shelby Cobra

Ford 289

1968-1973 AC Shelby Cobra

Ford 289

1967 DeTomaso Mangusta

Ford 289

1968-1972 DeTomaso Mangusta

Ford 302

1963 Ford 300

Ford 289

1966-1967 Ford Bronco

Ford 289

1968 Ford Bronco

Ford 289
Ford 302

1969-1977 Ford Bronco

Ford 302

1980-1984 Ford Bronco

Ford 302

1963-1967 Ford Club Wagon

Ford 289

1963-1967 Ford Country Sedan

Ford 289

1968 Ford Country Sedan

Ford 289
Ford 302

1969-1973 Ford Country Sedan

429 Ford 385 Series Big Block V8
Ford 302

1974 Ford Country Sedan

Ford 302

1963-1967 Ford Country Squire

Ford 289

1968 Ford Country Squire

Ford 289
Ford 302

1969-1973 Ford Country Squire

429 Ford 385 Series Big Block V8
Ford 302

1974 Ford Country Squire

Ford 302

1964-1967 Ford Custom

Ford 289

1968 Ford Custom

Ford 289
Ford 302

1969-1972 Ford Custom

429 Ford 385 Series Big Block V8
Ford 302

1964-1967 Ford Custom 500

Ford 289

1968 Ford Custom 500

Ford 289
Ford 302

1969-1973 Ford Custom 500

429 Ford 385 Series Big Block V8
Ford 302

1974 Ford Custom 500

Ford 302

1968-1975 Ford E-100 Econoline

Ford 302

1979-1983 Ford E-100 Econoline

Ford 302

1979-1983 Ford E-100 Econoline Club Wagon

Ford 302

1975 Ford E-150 Econoline

Ford 302

1979-1984 Ford E-150 Econoline

Ford 302

1979-1984 Ford E-150 Econoline Club Wagon

Ford 302

1968-1974 Ford E-200 Econoline

Ford 302

1975 Ford E-250 Econoline

Ford 302

1979-1984 Ford E-250 Econoline

Ford 302

1979-1980 Ford E-250 Econoline Club Wagon

Ford 302

1968-1974 Ford E-300 Econoline

Ford 302

1975 Ford E-350 Econoline

Ford 302

1979-1982 Ford E-350 Econoline

Ford 302

1979-1980 Ford E-350 Econoline Club Wagon

Ford 302

1961-1967 Ford Econoline

144 Ford Inline 6
170 Ford Inline 6
240 Ford Inline 6

1969-1981 Ford F-100

Ford 302

1982-1983 Ford F-100

Ford 3.8 Essex V6
Ford 302

1975-1984 Ford F-150

Ford 302

1969-1984 Ford F-250

Ford 302

1972-1980 Ford F-350

Ford 302

1963-1967 Ford Fairlane

Ford 289

1968 Ford Fairlane

Ford 289
Ford 302

1969 Ford Fairlane

Ford 302

1970 Ford Fairlane

429 Ford 385 Series Big Block V8
Ford 302

1978-1979 Ford Fairmont

Ford 302

1964-1967 Ford Falcon

Ford 289

1968 Ford Falcon

Ford 289
Ford 302

1969 Ford Falcon

Ford 302

1970 Ford Falcon

429 Ford 385 Series Big Block V8
Ford 302

1964-1965 Ford Falcon Sedan Delivery

Ford 289

1963 Ford Ford 300

Ford 289

1963-1967 Ford Galaxie

Ford 289

1963-1967 Ford Galaxie 500

Ford 289

1968 Ford Galaxie 500

Ford 302

1969-1973 Ford Galaxie 500

429 Ford 385 Series Big Block V8
Ford 302

1974 Ford Galaxie 500

Ford 302

1972-1973 Ford Gran Torino

429 Ford 385 Series Big Block V8
Ford 302

1974 Ford Gran Torino

Ford 302

1975-1980 Ford Granada

Ford 302

1982 Ford Granada

Ford 3.8 Essex V6

1964-1969 Ford GT40

Ford 289

1965-1967 Ford LTD

Ford 289

1968 Ford LTD

Ford 289
Ford 302

1969-1973 Ford LTD

429 Ford 385 Series Big Block V8
Ford 302

1974 Ford LTD

Ford 302

1977-1982 Ford LTD

Ford 302

1983-1984 Ford LTD

Ford 3.8 Essex V6
Ford 302

1985-1986 Ford LTD

Ford 3.8 Essex V6

1977-1979 Ford LTD II

Ford 302

1971-1977 Ford Maverick

Ford 302

1928-1931 Ford Model A

200 Ford Inline 6

1932 Ford Model B

200 Ford Inline 6

1964-1967 Ford Mustang

Ford 289

1968 Ford Mustang

Ford 289
Ford 302

1969-1971 Ford Mustang

429 Ford 385 Series Big Block V8
Ford 302

1972-1973 Ford Mustang

Ford 302

1979 Ford Mustang

Ford 302

1982 Ford Mustang

Ford 302

1983 Ford Mustang

Ford 3.8 Essex V6
Ford 302

1984 Ford Mustang

Ford 3.8 Essex V6
Ford 302
Ford Lima 2.3

1985-1986 Ford Mustang

Ford 3.8 Essex V6
Ford Lima 2.3

1994-2004 Ford Mustang

Ford 3.8 Essex V6

2013-2014 Ford Mustang

Ford Trinity

2018-2022 Ford Mustang

2.3 Ford Inline Four

1975-1978 Ford Mustang II

Ford 302

1974 Ford Pinto

170 Ford Inline 6
Ford Lima 2.3

1975-1979 Ford Pinto

Ford Lima 2.3

1980 Ford Pinto

170 Ford Inline 6
Ford Lima 2.3

1963-1967 Ford Ranch Wagon

Ford 289

1968 Ford Ranch Wagon

Ford 289
Ford 302

1969-1973 Ford Ranch Wagon

429 Ford 385 Series Big Block V8
Ford 302

1974 Ford Ranch Wagon

Ford 302

1960-1961 Ford Ranchero

Ford 289

1965-1967 Ford Ranchero

Ford 289

1968 Ford Ranchero

Ford 289
Ford 302

1969 Ford Ranchero

Ford 302

1970-1973 Ford Ranchero

429 Ford 385 Series Big Block V8
Ford 302

1974 Ford Ranchero

Ford 302

1977-1979 Ford Ranchero

Ford 302

1928-1931 Ford Sedan Delivery

200 Ford Inline 6

1964 Ford Sprint

Ford 289

1968-1973 Ford Thunderbird

429 Ford 385 Series Big Block V8

1977-1981 Ford Thunderbird

Ford 302

1982 Ford Thunderbird

Ford 3.8 Essex V6

1983-1984 Ford Thunderbird

Ford 3.8 Essex V6
Ford 302
Ford Lima 2.3

1985-1988 Ford Thunderbird

Ford 3.8 Essex V6
Ford Lima 2.3

1989-1997 Ford Thunderbird

Ford 3.8 Essex V6

1968 Ford Torino

Ford 289
Ford 302

1969 Ford Torino

Ford 302

1970-1973 Ford Torino

429 Ford 385 Series Big Block V8
Ford 302

1974 Ford Torino

Ford 302

1980 Lincoln Continental

Ford 302

1982 Lincoln Continental

Ford 3.8 Essex V6
Ford 302

1983-1984 Lincoln Continental

Ford 302

1980-1983 Lincoln Mark VI

Ford 302

1984 Lincoln Mark VII

Ford 302

1981-1984 Lincoln Town Car

Ford 302

1977-1980 Lincoln Versailles

Ford 302

1964-1967 Mercury Caliente

Ford 289

1966-1967 Mercury Capri

Ford 289

1969-1973 Mercury Capri

Ford Lima 2.3

1979 Mercury Capri

Ford 302

1982 Mercury Capri

Ford 302

1983-1984 Mercury Capri

Ford 3.8 Essex V6
Ford 302

1985-1986 Mercury Capri

Ford 3.8 Essex V6

1969-1973 Mercury Colony Park

429 Ford 385 Series Big Block V8

1960-1961 Mercury Comet

144 Ford Inline 6
170 Ford Inline 6

1964-1967 Mercury Comet

Ford 289

1968 Mercury Comet

Ford 289
Ford 302

1969 Mercury Comet

Ford 302

1971-1977 Mercury Comet

Ford 302

1967 Mercury Commuter

Ford 289

1967 Mercury Cougar

Ford 289

1968 Mercury Cougar

Ford 289
Ford 302

1969-1971 Mercury Cougar

429 Ford 385 Series Big Block V8
Ford 302

1977-1981 Mercury Cougar

Ford 302

1982 Mercury Cougar

Ford 3.8 Essex V6

1983-1984 Mercury Cougar

Ford 3.8 Essex V6
Ford 302

1985-1997 Mercury Cougar

Ford 3.8 Essex V6

1963 Mercury Country Cruiser

Ford 289

1964-1967 Mercury Cyclone

Ford 289

1968 Mercury Cyclone

Ford 289
Ford 302

1969-1971 Mercury Cyclone

429 Ford 385 Series Big Block V8
Ford 302

1979-1984 Mercury Grand Marquis

Ford 302

1969-1970 Mercury Marauder

429 Ford 385 Series Big Block V8

1969-1973 Mercury Marquis

429 Ford 385 Series Big Block V8

1979-1982 Mercury Marquis

Ford 302

1983-1986 Mercury Marquis

Ford 3.8 Essex V6

1963 Mercury Meteor

Ford 289

1975-1980 Mercury Monarch

Ford 302

1968 Mercury Montego

Ford 289
Ford 302

1969 Mercury Montego

Ford 302

1970-1973 Mercury Montego

429 Ford 385 Series Big Block V8
Ford 302

1974 Mercury Montego

Ford 302

1969-1973 Mercury Monterey

429 Ford 385 Series Big Block V8

1964-1967 Mercury Villager

Ford 289

1966-1967 Mercury Voyager

Ford 289

1978-1979 Mercury Zephyr

Ford 302

1963-1968 Shelby Cobra

Ford 289