Powermaster HPR Large Frame Series Alternators

4.29 out of 5 stars 7 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 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 41 Items.

Results 1 - 11 of 11

Powermaster HPR Large Frame Series Alternators 48550-1

Powermaster HPR Large Frame Series Alternators 48550-1

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

Part Number: PWM-48550-1

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Powermaster HPR Large Frame Series Alternators 48550

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

Part Number: PWM-48550

4.29 out of 5 stars ( 7 )

Estimated Ship Date: Tomorrow

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Powermaster HPR Large Frame Series Alternators 58550-1

Alternator, Street Alternators, 12V, 245 amps, Satin Black, Serpentine Pulley, Each

Part Number: PWM-58550-1

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Powermaster HPR Large Frame Series Alternators 51576

Alt Denso Black 245A CH Clutch Pulley

Part Number: PWM-51576

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Powermaster HPR Large Frame Series Alternators for 2014-2019 CORVETTE - 417943

Alternator, Internal Regulator, 245 Amp, 6-Groove, Natural, Serpentine, Chevrolet, 6.2L, Each

Part Number: PWM-417943

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

Powermaster HPR Large Frame Series Alternators for 2014-2019 CORVETTE - 417943-1

Alternator, Internal Regulator, 245 Amp, 6-Groove, Natural, Serpentine, One-Wire, Chevrolet, 6.2L, Each

Part Number: PWM-417943-1

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Powermaster HPR Large Frame Series Alternators 48550-4

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

Part Number: PWM-48550-4

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

Powermaster HPR Large Frame Series Alternators 54005

Alt Ford Denso Black 245A F150 6 grv Decoupler Pulley Side Batt Post/Reg

Part Number: PWM-54005

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

Powermaster HPR Large Frame Series Alternators 51532

Alt Ford Denso Black 245A F150 6 grv Pulley Side Batt Post/Rear Reg

Part Number: PWM-51532

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

Powermaster HPR Large Frame Series Alternators 44005

Alt Ford Denso Nat'l 245A F150 6 grv Decoupler Pulley Side Batt Post/Reg

Part Number: PWM-44005

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

Powermaster HPR Large Frame Series Alternators 41624

Alt Ford Denso Nat'l 245A F150 6 grv Pulley Side Batt Post/Reg

Part Number: PWM-41624

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

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