The Tuff Stuff 7127D6G is a 100 amp GM alternator built on the Factory Cast PLUS platform. It runs a 12V, 1-wire self-exciting circuit and turns a 6-rib serpentine pulley, making it a direct fit for GM accessory drives that use a serpentine belt. The aluminum case carries a natural finish.
- Type: Alternator, Factory Cast PLUS
- Output: 100 amps, 12V
- Wiring: 1-wire self-exciting
- Pulley: 6-rib serpentine
- Case: aluminum, natural finish
- Application: GM
- Part number: 7127D6G
FAQ
How many amps does the 7127D6G put out?
The 7127D6G is rated at 100 amps at 12 volts.
Is this a 1-wire alternator?
Yes. It uses a 1-wire self-exciting circuit for simplified GM installation.
What pulley does it use?
It comes with a 6-rib serpentine pulley for GM serpentine accessory drives.

