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Powermaster HPR Large Frame Series Alternators
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Powermaster

Powermaster HPR Large Frame Series Alternators

4.44 out of 5 stars 9 Customer Reviews

Today's modern hot rods require more current than ever, especially at idle and low engine speeds. Powermaster engineered a new alternator to update the late model h

Today's modern hot rods require more current than ever, especially at idle and low engine speeds. Powermaster engineered a new alternator to update the late model hairpin technology used from the factory with the new HPR Large Frame Series alternator! Available for a number of late model V8 engine platforms; these hairpin replacement alternators provide more than enough amps to power the accessories of a modern motor.
Features include:
* Simple and effective one-wire or OE style connections available
* 195 amps at idle, 215 amps while cruising, and 250 amps at top end
* Voltage compatibility: 12 V and optional 1

Today's modern hot rods require more current than ever, especially at idle and low engine speeds. Powermaster engineered a new alternator to update the late model hairpin technology used from the factory with the new HPR Large Frame Series alternator! Available for a number of late model V8 engine platforms; these hairpin replacement alternators provide more than enough amps to power the accessories of a modern motor.
Features include:
* Simple and effective one-wire or OE style connections available
* 195 amps at idle, 215 amps while cruising, and 250 amps at top end
* Voltage compatibility: 12 V and optional 14 V and 16 V
* Efficient internal components produce more output, while consuming less engine power
* Direct bolt-in to OEM and most aftermarket brackets
* Supplied with a factory spec decoupler, solid, clutch or underdrive pulley
* Stock diameter pulley accepts the factory belt
* Available in cast, black and polished finish
* Proof of performance with included dyno tag

Note: One wire alternators will bypass the factory ECU.

Showing In Stock Items. Show All 22 Items.

Results 1 - 8 of 8

Powermaster HPR Large Frame Series Alternators 48550

Made in the USA

Powermaster HPR Large Frame Series Alternators 48550

Powermaster HPR Large Frame Series Alternators 48550

Alternator, High-Amp, 250 amp, 12 V, Serpentine, Natural Finish, Denso Case, Internal Regulator, Cadillac, Chevy, GMC, Each

Part Number: PWM-48550

4.38 out of 5 stars ( 8 )

Estimated Ship Date: Today

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Powermaster HPR Large Frame Series Alternators 48550-1

Made in the USA

Powermaster HPR Large Frame Series Alternators 48550-1

Powermaster HPR Large Frame Series Alternators 48550-1

Alternator, High-Amp, 1-Wire, 250 amp, Serpentine, Natural Finish, Denso Case, Internal Regulator, Cadillac, Chevy, GMC, Each

Part Number: PWM-48550-1

Not Yet Reviewed

Estimated Ship Date: Today

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Powermaster HPR Large Frame Series Alternators 58550-4

Powermaster HPR Large Frame Series Alternators 58550-4

Powermaster HPR Large Frame Series Alternators 58550-4

Alternator, HPR, 250 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 HPR Large Frame Series Alternators for 2014-2019 SIERRA 1500, SILVERADO 1500 - 585503-1

Made in the USA

Powermaster HPR Large Frame Series Alternators for 2014-2019 SIERRA 1500, SILVERADO 1500 - 585503-1

Powermaster HPR Large Frame Series Alternators for 2014-2019 SIERRA 1500, SILVERADO 1500 - 585503-1

Alternator, Street Alternators, 12V, 250 amps, Satin Black, Under Drive Serpentine Pulley, Each

Part Number: PWM-585503-1

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

Powermaster HPR Large Frame Series Alternators 58550-1

Made in the USA

Powermaster HPR Large Frame Series Alternators 58550-1

Powermaster HPR Large Frame Series Alternators 58550-1

Alternator, Street Alternators, 12V, 250 amps, Satin Black, Serpentine Pulley, Each

Part Number: PWM-58550-1

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

Powermaster HPR Large Frame Series Alternators 485503-17.5

Powermaster HPR Large Frame Series Alternators 485503-17.5

Powermaster HPR Large Frame Series Alternators 485503-17.5

Alt Denso Nat'l 245A 3" 6 grv Escalade,C,K Series, GMC HPR 17.5 Preset

Part Number: PWM-485503-175

Not Yet Reviewed

Estimated Ship Date: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today

Powermaster HPR Large Frame Series Alternators 485503-16.8

Powermaster HPR Large Frame Series Alternators 485503-16.8

Powermaster HPR Large Frame Series Alternators 485503-16.8

Alt Denso Nat'l 245A 3" 6 grv Escalade,C,K Series, GMC HPR 16.8 Preset

Part Number: PWM-485503-168

Not Yet Reviewed

Estimated Ship Date: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today

Powermaster HPR Large Frame Series Alternators 64007

Made in the USA

Powermaster HPR Large Frame Series Alternators 64007

Powermaster HPR Large Frame Series Alternators 64007

Alternator, HPR Large Frame, 250 Amp, Polished, Internal Regulator, Serpentine Pulley, Chevy, Cadillac, GMC, Each

Part Number: PWM-64007

5.0 out of 5 stars ( 1 )

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

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