SKU: PWM8206
UPC: 692209008125
MPN: 8206
The POWERMASTER GM CS130D Alternator 120 Amps with 6-Rib Serpentine Pulley is engineered for drivers and mechanics who demand reliable electrical output in GM vehicles. This 120-ampere unit is designed as a direct replacement for factory alternators, delivering consistent charging performance for stock and moderately upgraded electrical systems. Whether you're restoring a classic GM engine or maintaining modern performance vehicles, this alternator provides the dependable power generation necessary to keep batteries charged under all driving conditions.
Built with an aluminum case construction, the CS130D features a robust 1-wire wiring configuration that simplifies installation and reduces harness complexity compared to multi-wire designs. The 6-rib serpentine pulley ensures smooth belt engagement and efficient power transfer from the engine crankshaft to the alternator rotor. Rated at 120 amps at 12 volts, this unit generates sufficient amperage to support factory lighting, ignition systems, and accessories without voltage drop. The natural finish aluminum housing provides corrosion resistance and durability in engine compartment environments, making it suitable for both street and performance applications where thermal stability matters.
Mechanics and enthusiasts working on General Motors applications—including small-block and big-block engines—will find this alternator a plug-and-play solution for OEM replacement or upgrades. The 1-wire design is compatible with most external voltage regulators and ground configurations common in classic and modified GM powerplants. Installation is straightforward on vehicles originally equipped with CS130D or compatible alternator mounts. Weighing 12.65 lbs, this unit installs easily within standard engine bay brackets, and the 6-rib pulley matches most serpentine belt systems used in GM applications from the 1980s onward. Always verify serpentine belt routing and pulley alignment during installation to ensure optimal charging performance and belt longevity.
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