**UNITED        STATES SECURITIES AND EXCHANGE COMMISSION**

**Washington,        D.C. 20549**

**FORM        8-K**

**CURRENT        REPORT**

**Pursuant        to Section 13 or 15(d) of the Securities Exchange Act of        1934**

**Date        of Report (Date of earliest event reported): March 2**
**,        2006**

**NAVISTAR        INTERNATIONAL CORPORATION**

| Delaware                                                                                        |   | 1-9618                                 |   | 36-3359573                                                            |
|-------------------------------------------------------------------------------------------------|--------|----------------------------------------|--------|-----------------------------------------------------------------------|
|                                                                                                 |   |                                        |   |                                                                       |
| (State                  or other jurisdiction ofincorporation                  or organization) |   | (Commission                  File No.) |   | (I.R.S.                  EmployerIdentification                  No.) |

| 4201                  Winfield Road, P.O. Box 1488, Warrenville, Illinois |   | 60555                       |
|---------------------------------------------------------------------------|--------|-----------------------------|
|                                                                           |   |                             |
| (Address                  of principal executive offices)                 |   | (Zip                  Code) |

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**ITEM        7.01. REGULATION FD DISCLOSURE**

**ITEM        9.01 **
**FINANCIAL        STATEMENTS AND EXHIBITS**

|   | (d)  | Exhibits                     |   |                                                                           |   |   |
|--------|-----------|------------------------------|--------|--------------------------------------------------------------------------------|--------|--------|
|   |      |                         |   |                                                                           |   |   |
|   |      | Exhibit                  No. |   | Description                                                                    |   | Page   |
|   |      | 99.1                         |   | Slide                  Presentation for March 2, 2006 Credit Suisse conference |   | E-1    |

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***Forward        Looking Statements***

*Information        provided and statements contained in the presentation 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 the presentation and the company        assumes        no obligation to update the information included in the presentation. 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*
*, including the risk of continued delay in        the completion of our financial statements and the consequences thereof,        the        availability of funds, either through cash on hand or the company’s other        liquidity sources, to repay any amounts due should any of the company’s debt        become accelerated, and decisions by suppliers and other vendors to restrict        or        eliminate customary trade and other credit terms for the company’s future orders        and other services, which would require the company to pay cash and which        could        have a material adverse effect on the company’s liquidity position and financial        condition. 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. In addition, until the previously        announced review by the company of its accounts is concluded, no assurance        can        be given with respect to the financial statement adjustments, impacts and        period        resulting from such review, if any, nor can there be any assurance that        additional adjustments to the financial statements of the company will not        be        identified. *

| Date:  | March                  2, 2006 | /s/Robert                  C. Lannert                                                        |
|--------|--------------------------------|----------------------------------------------------------------------------------------------|
|   |                           | Robert                  C. LannertVice                  Chairman and Chief Financial Officer |
|   |                           |                                                                                         |