Upgrade your GM charging system with the Powermaster 57293-104 alternator, a high-output 12SI unit designed to deliver dependable electrical performance for a wide range of street, performance, and replacement applications. With a 150-amp output, this alternator provides increased charging capacity for vehicles equipped with additional electrical accessories, upgraded audio systems, electric fans, lighting, and other power demands.
The Powermaster 57293-104 features a versatile 1-wire/3-wire configuration, allowing installation flexibility based on the vehicle’s wiring design and charging requirements. Its 6-rib serpentine pulley is matched for compatible serpentine belt systems, while the straight-mount configuration supports direct fitment on applications designed for this mounting style. Confirm vehicle compatibility and mounting requirements before installation.
Built with an aluminum case and finished in durable black paint, this GM 12SI alternator combines practical heat management with a clean appearance suitable for engine compartments of many styles. The compact 12SI design is widely recognized for its serviceability and compatibility with numerous GM-based charging system configurations. Powermaster engineering helps provide consistent alternator operation under demanding driving and accessory loads.
This alternator is supplied as an individual unit and is intended for replacement or charging-system upgrades where the specified GM 12SI configuration, output rating, pulley style, and mounting arrangement are required. Always verify terminal connections, belt routing, bracket alignment, and vehicle-specific electrical requirements before installation. The Powermaster 57293-104 is a practical choice for restoring reliable charging performance while adding useful electrical capacity.
Features:
- Output: Provides a 150-amp charging capacity for demanding electrical systems and accessory loads
- Design: GM 12SI alternator configuration for compatible replacement and performance applications
- Wiring: Supports flexible 1-wire or 3-wire installation configurations
- Pulley: Includes a 6-rib serpentine pulley for compatible belt-drive systems
- Mounting: Straight-mount design for applications using the corresponding bracket arrangement
- Construction: Aluminum case with a black-painted finish for durability and a clean engine-bay appearance
