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Vehicle Info NeededPOWERMASTERPART NUMBER: 713-27290-114
GM 17si Style Alternator 120 Amp
$23699
Ships on 09/14/2026
Lowest Price GuaranteeGM 17si Style Alternators
- GM 17si Style Alternator
- 120 Amp
- 6-Groove Serpentine Pulley
- Polished
Note: Charge Wire Not Included.
Powermaster 17si Style Alternators are a large case version of the 10si GM alternator and made for 1983-87 Corvette 5.7L and Camero/Firebird 2.8L vehicles. These alternators have an output of 85 amps at idle, and 120 amps peak. Available in chrome, polished or natural finish. Made in the U.S.A. Features:
- Excellent Output at Idle
- 1 or 3-Wire Operation
- Front Baffle Plate Included
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Note: Charge Wire Not Included.
| 85A at 2,400 RPM/13.2 VDC/77°F |
| Operating Range: -40°C to 150°C |
| Maximum RPM: 18,000 |
Part TypeAlternator
Product LinePowermaster GM 17si Style Alternators
BrandPOWERMASTER
Package Height7.5
Package Width7.5
Package Length9.5
Weight15.51 PG
Part CategoryPerformance Parts
Voltage Compatibility12
One-Wire CapableYes
Pulley IncludedYes
Alternator Brackets IncludedNo
Pulley StyleSerpentine Pulley
Advertised Amperage Output120 amps
Regulator IncludedYes
QuantitySold individually
Alternator Case StyleGM 17si
MountingWith Mounting Kit
Amperage120 AMP
Alternator FinishPolished
Belt IncludedNO
Part FitmentSemi Universal
Regulator StyleInternal
Vendor Part Number27290-114
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
