The company focuses on the manufacturing of international brand commercial trucks, IC Bus school and commercial buses, MaxxForce brand diesel engines and Workhorse brand chassis for motor homes and step vans. The business is also known as a manufacturer of diesel engines for various vans, pickup trucks and SUVs. They also market their diesel engine and truck parts to the global market. There are more than 1,000 dealers in the United States, Mexico, Brazil and Canada that are affiliated with the business. There are additional 60 dealers in 90 countries that are connected with the company.
Navistar International also offers financial assistance to their customers through their subsidiary, the Navistar Financial Corporation. The business is headquartered in Chicago, Illinois.