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Proform Parts

Proform Alternators

4.54 out of 5 stars 283 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.

Results 1 - 17 of 17

Proform Alternators 66445.14N

Proform Alternators 66445.14N

Proform Alternators 66445.14N

Alternator, Chrome, Internal Regulator, V-Belt Pulley, 140 Amp, 1-Wire, GM, Each

Part Number: PRO-66445-14N

4.43 out of 5 stars ( 42 )

Estimated Ship Date: Tomorrow

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Proform Alternators 66445.1F

Proform Alternators 66445.1F

Proform Alternators 66445.1F

Alternator, Internal Regulator, 100 Amp, Chrome, Ford, Lincoln, Mercury, Each

Part Number: PRO-66445-1F

4.87 out of 5 stars ( 15 )

Estimated Ship Date: Tomorrow

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Proform Alternators 66448.12N

Proform Alternators 66448.12N

Proform Alternators 66448.12N

Alternator, Black Wrinkle Powdercoated, V-Belt, 120 Amp, GM 10si, Internal Regulator, 1-Wire, Each

Part Number: PRO-66448-12N

5.0 out of 5 stars ( 13 )

Estimated Ship Date: Tomorrow

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Proform Alternators 141-657

Proform Alternators 141-657

Proform Alternators 141-657

Alternator, Chrome, Red Chevy Bowtie Emblem, Internal Regulator, V-Belt Pulley, 100 Amp, 1-Wire, GM, Each

Part Number: PRO-141-657

4.47 out of 5 stars ( 72 )

Estimated Ship Date: Tomorrow

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Proform Alternators 66448.1F

Proform Alternators 66448.1F

Proform Alternators 66448.1F

Alternator, Internal Regulator, 100 Amp, Black Crinkle, Ford, Lincoln, Mercury, Each

Part Number: PRO-66448-1F

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Proform Alternators 66445.1N

Proform Alternators 66445.1N

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 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Proform Alternators 141-662

Proform Alternators 141-662

Proform Alternators 141-662

Alternator, Black Crinkle, Red Chevy Bowtie Emblem, Internal Regulator, V-Belt Pulley, 100 Amp, 1-Wire, GM, Each

Part Number: PRO-141-662

3.75 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Proform Alternators 66445.12N

Proform Alternators 66445.12N

Proform Alternators 66445.12N

Alternator, Chrome, Internal Regulator, V-Belt Pulley, 120 Amp, 1-Wire, GM, Each

Part Number: PRO-66445-12N

4.33 out of 5 stars ( 12 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Proform Alternators 66448.1N

Proform Alternators 66448.1N

Proform Alternators 66448.1N

Alternator, Black Wrinkle Powdercoated, V-Belt, 100 Amp, GM 10si, Internal Regulator, 1-Wire, Each

Part Number: PRO-66448-1N

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Proform Alternators 141-660

Proform Alternators 141-660

Proform Alternators 141-660

Alternator, Chrome, Red Chevy Bowtie Emblem, Internal Regulator, V-Belt Pulley, 120 Amp, 1-Wire, GM, Each

Part Number: PRO-141-660

4.5 out of 5 stars ( 10 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Proform Alternators 141-659

Proform Alternators 141-659

Proform Alternators 141-659

Alternator, Chrome, Red Chevy Bowtie Emblem, Internal Regulator, V-Belt Pulley, 80 Amp, 1-Wire, GM, Each

Part Number: PRO-141-659

4.0 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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Proform Alternators 141-656

Proform Alternators 141-656

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: Tomorrow

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Estimated Ship Date: Tomorrow

Proform Alternators 66445.8N

Proform Alternators 66445.8N

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 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Proform Alternators 66445.6N

Proform Alternators 66445.6N

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: Tomorrow

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Estimated Ship Date: Tomorrow

Proform Alternators 66434

Proform Alternators 66434

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 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Proform Alternators 66445N

Proform Alternators 66445N

Proform Alternators 66445N

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

Part Number: PRO-66445N

3.33 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Proform Alternators 66436

Proform Alternators 66436

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: Jul 21, 2025 if ordered today

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Estimated Ship Date: Jul 21, 2025 if ordered today

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