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Powermaster High-Amp Alternators

4.48 out of 5 stars 122 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

Results 1 - 5 of 5

Alternator, High-Amp, 245 amp, 12 V, Serpentine, Natural Finish, Denso Case, Internal Regulator, Mopar, Hemi, Each

Part Number: PWM-41576

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Alternator, High-Amp, 12 V, 250 amps, Black Textured Powdercoated, Serpentine Pulley, External Ground Post, Jeep, Each

Part Number: PWM-51024WS

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Alternaotr, High-Amp Series, 180 Amps, Black, 12 V, Serpentine, Internal Regulator, Each

Part Number: PWM-851584WS

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Alternator, 250 Amps, Black, Powdercoated, 12 V, Pulley included, Serpentine, Internal Regulator, Jeep, Each

Part Number: PWM-51024W

Not Yet Reviewed

Estimated Ship Date: Mar 5, 2026 if ordered today

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Estimated Ship Date: Mar 5, 2026 if ordered today

Alternator, 120 Amp, GM 17Si Case, V-Belt Pulley, Internal Regulator, Buick, Chevy, GMC, Oldsmobile, Pontiac

Part Number: PWM-7288

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

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