Navistar said its first International DuraStar trucks with the Cummins ISB 6.7L engine have reached the market. The trucks were produced at Navistar’s Escobedo, Mexico, assembly plant.

“The addition of the ISB to our portfolio in early September was the driving factor in achieving, just weeks later, our best Class 6-7 order month in two years,” said Bill Kozek, Navistar president, North America Truck and Parts. “Today we have received orders for more than 4,500 DuraStar units, and with initial customers such as Budget Truck Rental, Idealease and Penske, we are poised to regain market share in the medium-duty segment.”

The DuraStar is available with the MaxxForce 7, MaxxForce DT and MaxxForce 9 engines in a variety of horsepower and torque ranges. 

The truck has a swept back front windshield for improved visibility, a 50 deg. wheel cut offering a tight turning radius and a roomy cab for driver comfort. The vehicle also comes standard with Diamond Logic electronic control system. Diamond Logic maximizes ease of body integration and helps deliver a number of smart, customizable features for added convenience and safety.

Navistar said it is on track to being regular production of IC Bus CE Series school buses with the Cummins ISB 6.7L in late-January 2014.