Robert Bosch Corp.

has released its Ultra Premium Long Haul Alternator for commercial vehicles. The company states the alternator, which operates at 70% efficiency, provides greater electrical power and efficiency at road speed or at idle than conventional original equipment replacement alternators that typically operate at 55% efficiency.

The alternator produces 160 amps operating output, and 80 amps at idle. Dual internal cooling fans help maintain the alternator’s temperature under various conditions.

The Long Haul Alternator is backed by a two-year, 250,000-mi. warranty.

Other features include:

• patented winding technology that uses 30% more copper than conventional OE alternators to contribute to efficiency

• external heat dissipating regulator and external rectifier mounted on the back of the unit, combined with the alternator’s heat sink design allows rapid heat dissipation

• diodes in the rectifier designed for longer life

• long-life bearings

• reduced slip ring diameter designed for reduced carbon brush wear