Tuff Stuff 7139ABULL Silver Bullet 100 Amp Alternator for GM, 12V 1-Wire

Upgrade your GM charging system with the Tuff Stuff 7139ABULL Silver Bullet alternator. Designed to deliver 100 amps at 12 volts, this performance alternator provides dependable electrical output for street cars, classic vehicles, and custom applications that require a simple, reliable charging solution. Its 1-wire configuration helps streamline installation by minimizing wiring requirements while supporting efficient alternator operation.
The 7139ABULL features a single V-belt Bullet Nose pulley, making it suitable for compatible GM applications using a traditional V-belt drive system. The aluminum case helps provide a practical balance of strength and weight, while the chrome finish adds a clean, polished appearance to the engine compartment. Before installation, verify pulley alignment, mounting configuration, belt compatibility, and electrical requirements for your specific vehicle.
Built by Tuff Stuff, the Silver Bullet alternator is engineered for straightforward performance and dependable service. The 1-wire design is especially useful for custom builds and simplified wiring systems, although proper grounding and battery connections remain essential for correct operation. This alternator is sold individually and is intended for GM applications requiring a 12-volt, 100-amp charging unit with a single V-belt pulley. Confirm vehicle fitment and clearance before purchase.

Features:

• Brand: TUFF-STUFF

• Part Number: 7139ABULL

• Output: 100 amps

• Voltage: 12 volts

• Wiring: 1-wire configuration

• Pulley: Single V-belt Bullet Nose pulley

• Case Material: Aluminum

• Finish: Chrome

• Application: Compatible GM vehicles and custom applications

• Quantity: Sold individually