Bosch is proud to announce the development of our new Long Haul® Extreme alternators that carry a 3yr/350K miles warranty. The Bosch AL9920LL, AL9921LL and 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. Further product details can be found in the trade brochure listed to the right.

The Bosch AL9920LL/AL9921LL/AL9922LL are direct drop in replacement alternators for many of the Class 4-8 medium- and heavy-duty vehicles and stationary engines today. The catalog link at right lists most of the applications for these units through 2011 in an easy-to-use look-up format that includes cross references to competitive models. There is also an easy to use electronic cross reference on the left. In addition to trucks, these alternators are also excellent choices for school bus and other miscellaneous applications.