Product Features Dual Output Power - Vehicle load shared equally by both alternators controlled by a single regulator (A2-343). High Efficiency - Means lower internal alternator operating temperature, resulting in longer alternator life. Less engine power needed to produce electric power means more engine power available for other needs. Unique Brushless Construction - Elimination of rotating windings, brushes and slip rings yields durability, extends service life, eliminates arcing and reduces electromagnetic interference (EMI). Stationary Field and Stator Windings - Rugged design that is less sensitive to vibration than standard alternators. Since there are no rotating windings, the CEN design allows high speed operation up to 8,000 rpm. Long Life Bearings - Feature high temperature grease and are heat stabilized for extended service life in hot engine compartments. Air Cooled - Eliminates the need for an oil circulation system. No possibility of oil leaks, no hoses, and no waste heat transferred to the engine.