Peterbilt’s Class 8 low-cab forward Model 320 is now available with the Cummins ISM engine. The 11-liter engine option is available with hp ratings from 280 @ 1,150 ft.-lb. torque to 350 @ 1350 ft.-lb., marking the largest engine available for this model.

“The new Cummins ISM option will help provide customers with the power and durability associated with a large-bore engine,” said Scott Pearson, Peterbilt assistant gm—sales & marketing. “The ISM engine provides a new level of robustness for greater reliability and longer life, helping result in more uptime and lower service requirements.”

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