Powermaster 27294 Polished 100 Amp GM 12SI Alternator

Upgrade your vehicle’s charging system with the Powermaster 27294 polished 100 amp alternator, designed with a GM original-style appearance and reliable 12-volt performance. This Delco-style 12SI alternator delivers dependable electrical output for street-driven vehicles, restorations, and custom applications requiring a clean factory-inspired look with enhanced charging capacity.
The Powermaster 27294 features a versatile 1-wire/3-wire configuration, allowing it to support different installation preferences and vehicle wiring setups. Its straight-mount design and single V-belt pulley are suited for compatible GM applications, while the polished aluminum case provides a durable, corrosion-resistant finish and a refined appearance under the hood. Always verify mounting, pulley alignment, wiring, and belt compatibility before installation.
Built for practical performance and easy integration, this alternator combines a classic GM 12SI form factor with modern output capability. The 100 amp rating provides additional electrical support for upgraded lighting, audio equipment, ignition components, and other accessories when the vehicle’s original alternator requires more capacity. The Powermaster 27294 is supplied as a complete alternator for applications using compatible GM mounting arrangements and belt-drive components.

Features:

• Brand: Powermaster

• Part Number: 27294

• Alternator Type: GM original-style Delco 12SI

• Output: 100 amps

• Voltage: 12 volts

• Wiring Configuration: 1-wire/3-wire compatible

• Pulley Type: Single V-belt

• Mounting Style: Straight mount

• Case Material: Aluminum

• Finish: Polished

• Application: Compatible GM vehicle and custom charging-system applications