Powermaster HPR Large Frame Series Alternators 485503-1

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Part Number: PWM-485503-1

$476.99

Alternator, High-Amp, 1-Wire, 250 amp, Under Drive Serpentine Pulley, Natural Finish, Denso Case, Internal Regulator, Cadillac, Chevy, GMC, Each
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Powermaster HPR Large Frame Series Alternators 485503-1

Powermaster HPR Large Frame Series Alternators 485503-1

PWM-485503-1

Not Yet Reviewed

Part Number: PWM-485503-1

Estimated Ship Date: Oct 22, 2026

$476.99

Estimated Ship Date: Oct 22, 2026 Would you rather pick it up?

Overview

Brand:
Manufacturer's Part Number:
485503-1
Part Type:
Product Line:
Summit Racing Part Number:
PWM-485503-1
UPC:
692209027577
Remanufactured:
No
Alternator Case Style:
Denso
Advertised Amperage Output:
250 amps
Color:
Natural
Finish:
Natural
Voltage Compatibility:
12
High Output:
Yes
One-Wire Capable:
Yes
Pulley Included:
Yes
Pulley Style:
Serpentine
Regulator Included:
Yes
Alternator Regulator Location:
Internal
Belt Included:
No
Alternator Brackets Included:
No
Quantity:
Sold individually.
Notes:
For use on engines that do not incorporate Regulated Voltage Control (RVC). 3 in., 6-groove serpentine pulley included.

Powermaster HPR Large Frame Series Alternators

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.

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