Tuff Stuff - GM 1971-1986 1-Wire (10SI)

The 10SI GM style alternators have a custom voltage regulator that lets the alternator be used as a 1-wire alternator or can be factory wired using the OEM plug. Available in chrome plated, black chrome, polished aluminum, stealth black, powder coated colors and Factory Cast PLUS+ finishes, these alternators output from 65 amps to 140 amps. Every Tuff Stuff alternator is hand built and load tested in Cleveland, Ohio and carry a 1-year limited warranty.