GM 100 Amp 1 Wire Internal Regulator High Output Alternator w/ Billet Fan Blue They include the crankshaft hub

They include the crankshaft hub adapter and input shaft

Speedmaster valve seals are posi-stop seals made from high-temperature Viton¨ material for a long-lasting seal

and come in machined or polished finishes to suit your application needs

thanks to its exceptional race-proven performance both on and off the track

Speedmaster main caps are precision machined from superior-quality steel

GM 100 Amp 1 Wire Internal Regulator High Output Alternator w/ Billet Fan Blue They include the crankshaft hubIf you're in the market for a new GM alternator that can really deliver, let Speedmaster hook you up! These GM single wire alternators come ready to install for all GM one wire internal regulator applications. They feature a sleek chrome finish with an aluminum housing and have a 100 amp capacity. Remember, a one wire alternator means just that! You can simply connect one wire from the alternator to the battery, and you are good to go!