This is a brand new high quality GM CS130 Style 160 Amp Alternator with Serpentine Pulley. This alternator is brand new not a remanufactured unit. This is a one or three wire set up with a max output of 160 amps. This alternator is commonly used on GM vehicles 1985-1992. This alternator will not work on 94-97 LT1 Engines.