Navistar has added the Cummins ISB 6.7-liter diesel to the engine lineup of its International WorkStar vocational model, the truck manufacturer announced. The Cummins engine will be available in ...

International Truck’s WorkStar vocational truck is now available with a Cummins ISB 6.7L engine. It is the second International vocational model to offer the engine as an option, joining the DuraStar, ...

Cummins Inc. announced today that it has received certification for its medium-duty ISB engine from EPA, saying it complies with the new emission standards that go into effect October 1. The company ...

LISLE, Ill. — Navistar International announced recently that it will offer the Cummins ISB mid-range engine in its DuraStar medium-duty trucks. The ISB will represent the first mid-range engines to ...