Heather Kos Promoted to Vice President at Navistar International Corporation

Warrenville, Illinois - September 17, 2007

Navistar International Corporation (Other OTC: NAVZ) today announced the promotion of Heather Kos to vice president, investor relations. Kos, 36, has been director, investor relations, since January 2006.

"Heather's proven success in leading the strategic direction of Navistar’s investor relations merits this expanded role,” said Bill Caton, Navistar executive vice president and chief financial officer. “Navistar is fortunate to have Heather’s working knowledge of our strategy and operations as we continue to communicate the company’s solid performance and future growth.”

Kos will continue to work closely with Caton and Terry M. Endsley, Navistar senior vice president and treasurer, to deliver the company's message to the financial community.

Since joining the company in 1997, Kos has served in numerous positions in finance and strategy at International Truck and Engine Corporation, Navistar's operating company. Kos was director of finance for truck group reporting where she successfully led a number of operating programs involving the company's truck vehicle center. She also served as plant controller at the company's Melrose Park, Ill., engine plant.

Before she joined International Truck and Engine, Kos held a number of finance positions including a consultant role with Price Waterhouse.

Kos is a graduate of Michigan State University with a bachelor's degree in accounting and is a certified public accountant. She earned an MBA from DePaul University.

Navistar International Corporation (Other OTC:NAVZ) is a holding company whose wholly owned subsidiaries produce International® brand commercial trucks, MaxxForce brand diesel engines, IC brand school and commercial buses, and Workhorse brand chassis for motor homes and step vans. It also is a private-label designer and manufacturer of diesel engines for the pickup truck, van and SUV markets. The company also provides truck and diesel engine parts and service. Another wholly owned subsidiary offers financing services. Additional information is available at: www.navistar.com.


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