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  • Filters

  • Make/Model
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Powermaster

Powermaster High-Amp Alternators

4.48 out of 5 stars 121 Customer Reviews

With modern automotive accessories, such as audio/video equipment, navigation systems, aftermarket lights, and other electrical components, the need for higher amperage alternators has increased. Powermaster has responded to this need with these high-amp alternators. They're available in several finishes to suit your style and performance needs.

Powermaster high-amp alternators feature:

* High output with excellent idle performance
* Hand-wound, custom-designed stators
* Heavy-duty regulators and rectifiers
* Gold plated battery post for better electrical connections
* Proof of performance tags

Showing In Stock Items. Show All 14 Items.

Results 1 - 9 of 9

Powermaster High-Amp Alternators 48237

Made in the USA Powermaster High-Amp Alternators 48237

Powermaster High-Amp Alternators 48237

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

Part Number: PWM-48237

4.93 out of 5 stars ( 30 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Powermaster High-Amp Alternators 58237

Made in the USA Powermaster High-Amp Alternators 58237

Powermaster High-Amp Alternators 58237

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 )

Estimated Ship Date: Today

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Powermaster High-Amp Alternators 68237

Made in the USA Powermaster High-Amp Alternators 68237

Powermaster High-Amp Alternators 68237

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

Part Number: PWM-68237

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Powermaster High-Amp Alternators 58550-4

Powermaster High-Amp Alternators 58550-4

Powermaster High-Amp Alternators 58550-4

Alternator, High-Amp, 245 amp, 12 V, 1-Wire, Serpentine, Black Finish, Denso Case, Internal Regulator with Dash Light, Cadillac, Chevy, GMC, Each

Part Number: PWM-58550-4

Not Yet Reviewed

Estimated Ship Date: Today

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Powermaster High-Amp Alternators 44007

Made in the USA Powermaster High-Amp Alternators 44007

Powermaster High-Amp Alternators 44007

Alternator, High-Amp, 245 amp, 12 V, Serpentine, Natural Finish, Denso Case, Internal Regulator, Cadillac, Chevy, GMC, Each

Part Number: PWM-44007

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Powermaster High-Amp Alternators 28237

Made in the USA Powermaster High-Amp Alternators 28237

Powermaster High-Amp Alternators 28237

Alternator, 180 Amp, Internal Regulator, 4-Pin, Polished, GM, Each

Part Number: PWM-28237

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

Powermaster High-Amp Alternators 38237

Made in the USA Powermaster High-Amp Alternators 38237

Powermaster High-Amp Alternators 38237

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

Part Number: PWM-38237

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

Powermaster High-Amp Alternators 485503

Made in the USA Powermaster High-Amp Alternators 485503

Powermaster High-Amp Alternators 485503

Alternator, High-Amp, 245 amp, 12 V, 1-Wire, Under Drive Serpentine Pulley, Natural Finish, Denso Case, Internal Regulator, Cadillac, Chevy, GMC, Each

Part Number: PWM-485503

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

Powermaster High-Amp Alternators 68550-1

Made in the USA Powermaster High-Amp Alternators 68550-1

Powermaster High-Amp Alternators 68550-1

Alternator, 245 Amp, Serpentine Pulley, Polished, Chevy, GMC, Cadillac, Each

Part Number: PWM-68550-1

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

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