Based on our late model Mitsubishi 6 phase housings, this tried-and-true alternator features 16 diodes for excellent durability. Reasonably priced and very durable, these units feature a finned rectifier with excellent cooling that provides great durability. Premium bearings ensure long life even in hot or abusive conditions. Available in 270 amp configurations. Installation Notes: This unit comes equipped with a smaller 1.75 inch diamter alternator pulley, and will require a slightly shorter drive belt for proper belt tension.