NAVISTAR INTERNATIONAL CORPORATION NON-EMPLOYEE DIRECTOR STOCK OPTION AWARD AGREEMENT NAVISTAR INTERNATIONAL CORPORATION 2004 PERFORMANCE INCENTIVE PLAN

EXHIBIT 10.51

OPTIONEE:

ADDRESS:

SOCIAL SECURITY NUMBER:

NUMBER OF SHARES:

EXERCISE PRICE PER SHARE:

DATE OF GRANT:

NUMBER OF SHARES: [1/3^rd]   EXERCISABLE ON OR AFTER [one year]

NUMBER OF SHARES: [1/3^rd]   EXERCISABLE ON OR AFTER [two years]

NUMBER OF SHARES: [1/3^rd]   EXERCISABLE ON OR AFTER [three years]

EXPIRATION DATE: [ten years]

This is an award agreement (the "Award Agreement") between Navistar International Corporation, a Delaware corporation (the "Corporation"), and the Non-Employee Director named above (the "Director" or "Optionee"). The Corporation hereby grants to the Director the right and option (this "Option") to purchase all or any part of an aggregate of the above-stated number of shares of Common Stock of the Corporation on the terms and conditions of the Corporation’s 2004 Performance Incentive Plan approved by the shareholders February 17, 2004, as amended from time to time, (the "Plan") and, further subject to the Non-Em ployee Director Stock Option Agreement Supplement which is attached hereto (the "Supplement").

Subject to the terms and conditions of this Award Agreement, this Option is exercisable on or after the date set forth above; provided, however, that this Option shall expire on the Expiration Date set forth above and must be exercised, if at all, on or before the Expiration Date except as otherwise provided in the Supplement.

The Corporation and the Director hereby agree to the terms and conditions of this Award Agreement and have executed it as of the Date of Grant set forth above.

NAVISTAR INTERNATIONAL CORPORATION

By:_______________________________

Daniel C. Ustian

Chairman, President and Chief

Executive Officer

Attest:

____________________________

Assistant Secretary

___________________________________

Director

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