Long Haul Extreme Alternators

The Bosch AL9920LL, AL9921LL, AL9922LL are typically more powerful, lighter or smaller than competitive 3yr/350K warranty products. In addition, the Bosch units are packed with additional features such as battery sense, multiple B+ terminals, and thermal protection to make installation easier and ensure optimal performance.

Key Features

  • Bosch self-protected voltage regulator protects internal components from excessive heat
  • Intelligent Battery Technology reduces battery charging time; prolongs battery life
  • Temperature and vibration-resistant materials and components for unmatched reliability over longer service life