Navistar, Inc. announced that it has started customer shipments of its first International DuraStar vehicles with the Cummins ISB 6.7L engine. The first units were released from the company'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 broadest array of specifications in the medium-duty industry and the addition of the Cummins ISB 6.7L engine now expands Navistar's product reach to a wider audience, according to the manufacturer. The DuraStar is also available with the MaxxForce 7, MaxxForce DT, and MaxxForce 9 – in many horsepower and torque ranges. 

The DuraStar provides a swept back front windshield for improved visibility, a 50-degree 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, one of the most advanced electrical multiplexing architectures available in commercial trucks. Diamond Logic maximizes ease of body integration and helps deliver a number of smart, customizable features for added convenience and safety.

Navistar is on track to being regular production of IC Bus CE Series school buses with the Cummins ISB 6.7L engine in late-January 2014. To date, the company has received more than 6,000 orders for medium-duty trucks and school buses with the ISB engine.