Proform Alternators

4.53 out of 5 stars 290 Customer Reviews

Proform alternators are available for countless vehicles, from the 1950s thru the 1990s. These replacements come assembled and ready to bolt on. They're available in a variety of styles, finishes, amperage outputs, and other options. Select the model recommended for your application.

Showing In Stock Items. Show All 14 Items.

Results 1 - 14 of 14

Proform Alternators 66430.16BK

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 ( 10 )

Estimated Ship Date: Today

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Proform Alternators 66430.16C

Alternator, Internal Regulator, 160 Amp, Chrome, Center Offset, GMC, Chevrolet, Each

Part Number: PRO-66430-16C

4.14 out of 5 stars ( 7 )

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Proform Alternators 66445.8N

Alternator, Internal Regulator, 80 Amp, Chrome, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: PRO-66445-8N

4.96 out of 5 stars ( 24 )

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Proform Alternators 141-656

Alternator, Chrome, Red Chevy Bowtie Emblem, Internal Regulator, V-Belt Pulley, 70 Amp, GM, Each

Part Number: PRO-141-656

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Proform Alternators 66445.1N

Alternator, 1-Wire Only, Internal Regulator, 100 Amp, Chrome, Chevy, GMC, Each

Part Number: PRO-66445-1N

4.35 out of 5 stars ( 23 )

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Proform Alternators 66430.16N

Alternator, Internal Regulator, 160 Amp, Satin, Center Offset, GMC, Chevrolet, Each

Part Number: PRO-66430-16N

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Proform Alternators 66432

Alternator, Black Wrinkle Powdercoated, V-Belt, 50 Amp, Nippondenso, 1-Wire, Each

Part Number: PRO-66432

5.0 out of 5 stars ( 1 )

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Proform Alternators 66431

Alternator, Chrome, V-Belt, 50 Amp, Nippondenso, 1-Wire, Each

Part Number: PRO-66431

Not Yet Reviewed

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Proform Alternators 66433

Alternator, Polished, V-Belt, 50 Amp, Nippondenso, 1-Wire, Each

Part Number: PRO-66433

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Proform Alternators 66434

Alternator, Internal Regulator, 100 amp, V-belt Pulley, Chevy, GMC, Each

Part Number: PRO-66434

4.8 out of 5 stars ( 5 )

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Proform Alternators 66445.6N

Alternator, Internal Regulator, 60 Amp, Chrome Plated, Chevy, GMC, Each

Part Number: PRO-66445-6N

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Proform Alternators 66436

Alternator, Internal Regulator, 3-Wire, 70 amp, V-belt Pulley, Chevy, GMC, Each

Part Number: PRO-66436

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Proform Alternators 66445N

Alternator, Internal Regulator, 63 Amp, Chrome, Chevy, GMC, Each

Part Number: PRO-66445N

2.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Proform Alternators 141-658

Alternator, Chrome, Red Chevy Bowtie Emblem, Internal Regulator, V-Belt Pulley, 60 Amp, GM, Each

Part Number: PRO-141-658

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

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