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One Wire Alternators

One wire alternators are a popular choice for building hot rods or project vehicles. Ease of installation, wide availability, and reduced cost are just a few of the...

One wire alternators are a popular choice for building hot rods or project vehicles. Ease of installation, wide availability, and reduced cost are just a few of the reasons builders love single wire alternators.

One wire alternators work by only utilizing a single wire connected directly to the positive post on the battery. The “ground” is achieved through the alternator’s physical connection to the engine block, and therefore requires a high-quality ground strap between the engine block and vehicle chassis. However, because there is only 1 wire to install, it is much easier to route and access that wire during installation...

One wire alternators are a popular choice for building hot rods or project vehicles. Ease of installation, wide availability, and reduced cost are just a few of the reasons builders love single wire alternators.

One wire alternators work by only utilizing a single wire connected directly to the positive post on the battery. The “ground” is achieved through the alternator’s physical connection to the engine block, and therefore requires a high-quality ground strap between the engine block and vehicle chassis. However, because there is only 1 wire to install, it is much easier to route and access that wire during installation or replacement. This makes servicing and repairs much easier and can help keep your vehicle’s engine bay tidier and more attractive.

As long as you select an alternator that produces enough amperage to meet the demands of your vehicle’s electrical system, a one-wire alternator should be capable of providing years of service. But in the event that one should fail, because single wire alternators are simple, troubleshooting and down time are kept to a minimum.

Although they are commonly referred to as GM one wire alternators, there are options available for Mopar and Ford, as well. Summit Racing Equipment offers a wide variety of one wire alternators from trusted brands: no copycats, knockoffs, or third-party sellers here! Use the powerful Make/Model search tool to find the one wire alternator that’s perfect for your ride or project.

Individual Parts

Results 1 - 25 of 1562

Alternator, Internal Regulator, 150 Amp, Chrome Plated, Buick, Oldsmobile, Pontiac, Chevy, GMC, Each

Part Number: PWM-37293

4.66 out of 5 stars ( 148 )

Estimated Ship Date: Today

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Alternator, Internal Regulator, 100 Amp, One Wire, V-Belt Pulley, Natural, Ford, L4/L6/V6/V8, Each

Part Number: SUM-810308

4.6 out of 5 stars ( 128 )

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Alternator, Internal Regulator, 150 Amp, Natural, Buick, Oldsmobile, Pontiac, Chevy, GMC, Each

Part Number: PWM-47293

4.73 out of 5 stars ( 79 )

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Alternator, Internal Regulator, 100 Amp, Natural, AMC, Buick, Oldsmobile, Pontiac, Chevy, GMC, Each

Part Number: PWM-7294

4.84 out of 5 stars ( 128 )

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Alternator, IGM AD244, Internal Regulator, 220 Amp, Natural, Cadillac, Chevy, GMC, Pontiac, Each

Part Number: PWM-48237

4.93 out of 5 stars ( 29 )

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Alternator, Internal Regulator, 100 Amp, Chrome Plated, Buick, Oldsmobile, Pontiac, Chevy, GMC, Each

Part Number: PWM-17294

4.79 out of 5 stars ( 138 )

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Alternator, PowerGEN, Internal Regulator, 90 Amp, 12 V, Black Powdercoated, Each

Part Number: PWM-82051-2

4.85 out of 5 stars ( 20 )

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Alternator, Internal Regulator, 140 Amp, Natural Finish, Ford, Lincoln, Mercury, Each

Part Number: SUM-810300

4.23 out of 5 stars ( 88 )

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Alternator, Internal Regulator, 100 Amp, 1-Wire, Chrome Plated, GM, Each

Part Number: SUM-G1667A

4.48 out of 5 stars ( 96 )

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Alternator, PowerGEN, Internal Regulator, 90 Amp, 12 V, Black Powdercoated, Each

Part Number: PWM-82101-2

4.79 out of 5 stars ( 34 )

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Alternator, Internal Regulator, 100 Amp, One Wire, V-Belt Pulley, Natural, Ford, L4/L6/V6/V8, Each

Part Number: TFF-7068

4.59 out of 5 stars ( 194 )

Estimated Ship Date: May 19, 2025 if ordered today

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Estimated Ship Date: May 19, 2025 if ordered today

Alternator, Internal Regulator, 150 Amp, Black Powdercoated, Buick, Oldsmobile, Pontiac, Chevy, GMC, Each

Part Number: PWM-57293

4.57 out of 5 stars ( 23 )

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Alternator, Retro, Chrysler Square Back, 12 V, 90 amps, Internal Regulator, Chrysler, Dodge, Plymouth, Each

Part Number: PWM-75091

4.71 out of 5 stars ( 34 )

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Alternator, Internal Regulator, 150 Amp, V-Belt, Black, Ford, Mercury, Jeep, Each

Part Number: PWM-8-57141

4.68 out of 5 stars ( 34 )

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Alternator, Performance, High Amp, GM 10si Case Style, 12 V, 100 Amps, Natural, V-Belt Pulley, Each

Part Number: TFF-7127D12

4.95 out of 5 stars ( 20 )

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Alternator, Internal Regulator, 150 Amp, Polished, Buick, Oldsmobile, Pontiac, Chevy, GMC, Each

Part Number: PWM-67293

4.67 out of 5 stars ( 46 )

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Alternator, Internal Regulator, 150 Amp, Natural, Ford, Each

Part Number: PWM-8-47141

4.75 out of 5 stars ( 16 )

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Alternator, Internal Regulator, 150 Amp, V-Belt Pulley, Chrome Plated, Ford, Lincoln, Mercury, Each

Part Number: PWM-8-37141

4.7 out of 5 stars ( 20 )

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Alternator, High-Amp, GM AD244 Case, 220 amps, 12 V, Serpentine Pulley, Offset Mount, Black Powdercoat, Internal Regulator, Chevrolet, GMC, Each

Part Number: PWM-58237

4.2 out of 5 stars ( 10 )

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Alternator, Internal Regulator, 175 Amp, Black Powdercoated, One Wire Capable, Chevy, Pontiac, LS, Each

Part Number: SUM-810348B

5.0 out of 5 stars ( 1 )

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ALTERNATOR - GM CS130, 220 AMP, 1 WIRE, SIDE BATTERY PORT, 6.61 INCH MOUNTING SIZE, SERPENTINE, CHROME

Part Number: TSN-ES1026C

4.0 out of 5 stars ( 4 )

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Alternator, GM CS130 Case, 160 amps, 12 Volt, One Wire, V-Belt, Black Crinkle, Chevy, Small Block, Big Block, Each

Part Number: PRO-66430-16BK

5.0 out of 5 stars ( 6 )

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Alternator, Internal Regulator, 150 Amp, Chrome Plated, Buick, Oldsmobile, Pontiac, Chevy, GMC, Each

Part Number: PWM-37293-114

4.76 out of 5 stars ( 17 )

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Alternator, GM CS130, Internal Regulator, 220 Amp, Chrome, V-Belt, GM, Each

Part Number: TSN-ES1022C

5.0 out of 5 stars ( 2 )

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