Navistar to Release Fiscal 2005 Third Quarter Financial Results on Wednesday, September 7

WARRENVILLE, Ill.--July 18, 2005--Navistar International Corporation , the nation's largest combined commercial truck, school bus and mid-range diesel engine producer, announced today that it will release financial results for its fiscal 2005 third quarter, ended July 31, 2005, on Wednesday, September 7, 2005. A news release will be issued prior to NYSE market opening and will be followed by a quarterly conference call at 11:00 am ET, 10:00 am CT. Speakers on the call will be Daniel C. Ustian, chairman, president and chief executive officer and Robert C. Lannert, vice chairman and chief financial officer.

The conference call will be available via webcast from the investor relations section of Navistar's web site at http://www.nav-international.com/. Investors are advised to log on to the web site at least 15 minutes prior to the call to allow sufficient time for downloading any necessary software. Supplemental financial and statistical information specific to third quarter results will also be available to investors in the investor relations section prior to the start of the call. The web cast will be available for replay at the same address approximately two hours following its conclusion.

In order to allow Navistar and related parties more time to prepare and review quarterly results, the Company has decided to begin releasing quarterly results later than it has traditionally released in the past.

Information provided and statements made on the web cast that are not purely historical are forward-looking statements within the meaning of Section 27A of the Securities Act, Section 21E of the Exchange Act, and the Private Securities Litigation Reform Act of 1995. Such forward-looking statements only speak as of the date of this news release and we assume no obligation to update the information included in this news release. Such forward-looking statements include information concerning our possible or assumed future results of operations, including descriptions of our business strategy. These statements often include words such as "believe," "expect," "anticipate," "intend," "plan," "estimate" or similar expressions. These statements are not guarantees of performance or results and they involve risks, uncertainties and assumptions. Although we believe that these forward-looking statements are based on reasonable assumptions, there are many factors that could affect our actual financial results or results of operations and could cause actual results to differ materially from those in the forward-looking statements. For a further description of these factors, see Exhibit 99.1 to our Form 10-K for the fiscal year ended October 31, 2004.

Navistar International Corporation is the parent company of International Truck and Engine Corporation. The company produces International(R) brand commercial trucks, mid-range diesel engines and IC brand school buses and is a private label designer and manufacturer of diesel engines for the pickup truck, van and SUV markets. A wholly owned subsidiary offers financing services. Additional information is available at: www.nav-international.com.