Newly redesigned for 2020, The Elite series offers the highest possible amperage and durability available in a large case alternator. 6 phase technology combined with massive twin rectifier assemblies and 12 diodes makes these alternators totally durable for daily use, while still maintaining 200+ amps at engine idle speeds. NOTE: F250/F350 6.7L Diesel trucks were available with single or dual alternator configurations. This unit fits the single or the lower dual alternator mount. It does not fit the upper 157 amp factory unit.