GM CS121 Mini 1-Wire 80 Amp Alternator, 1G Pulley, Side Terminal, Factory Cast Plus Finish 7937ST

The Tuff Stuff CS121 series 7937 mini alternators feature heavy duty copper wound coils, spike-resistant diodes, an internal voltage regulator and an external cooling fan for long life dependability. A 1-wire installation eliminates wiring hassles, while a low idle cut-in regulator provides over 60 amp charging at low RPMs. The compact size measures just 4.75 inches nominal diameter, 6-1/8 inch mounting hole spacing, and a 5 inch depth with a flat end frame for tight installations. The side post terminal simplifies installation and provides nearly 1 inch of extra rear clearance, making this alternator series perfect for high horsepower muscle cars, hot rods, show cars, customs and daily drivers alike. Plain, as cast finish. These alternators are coated with Tuff Stuff's exclusive FOREVER FINISH coating which prevents oxidation and allows easy cleaning of dirt and grime.

Manufacturer Part Number : 7937ST

Part Notes:

This alternator is meant to be used with an internally regulated setup. In general, this corresponds to 1971 and up, but it can be used with an internally regulated conversion setup on older vehicles as well.