S Series Billet 240 AMP Racing Alternator For C6 Corvette - Machined FinishThe S Series of 6 phase alternators offers incredible output in a compact and durable package. Highly efficient, these units use less horsepower per kW than conventional 3 phase alternators. These units feature 12 diodes, twin rectifier plates and outstanding airflow to ensure long service life even in severe conditions. These units are available for a broad range of domestic and import applications in 170 or 240 amp configurations.