Mechman 240 Amp Alternator For 03-09 5.9L Cummins Ram*Most alternators are custom built to order. Standard build time is 10 14 days.* The S series of 6 phase alternators offers incredible output in a compact and durable package. 12 diodes, twin rectifier plates and outstanding airflow ensure long service life, even in severe conditions. The 240 amp model offers the best balance between peak output, and output at engine idle RPM.