SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 3)* Navistar International Corporation (Name of Issuer) Common Stock, Par Value $0.10 (Title of Class of Securities) 63934E108 (CUSIP Number) Keith Schaitkin, Esq. Icahn Capital LP 767 Fifth Avenue, 47th Floor New York, New York 10153 (212) 702-4300 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) December 6, 2011 (Date of Event which Requires Filing of this Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Section 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box / /. NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent. *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). SCHEDULE 13D Item 1. Security and Issuer This statement constitutes Amendment Number 3 to the Schedule 13D relating to the Common Stock, par value $0.10 (the "Shares"), issued by Navistar International Corporation (the "Issuer"), and hereby amends the Schedule 13D filed with the Securities and Exchange Commission (the "SEC") on September 13, 2011, as amended by the Amendment Number 1 to Schedule 13D, filed with the SEC, on November 2, 2011, and by the Amendment Number 2 to Schedule 13D, filed with the SEC, on November 15, 2011 (together, the "Schedule 13D"), on behalf of the Reporting Persons (as defined in the Schedule 13D), to furnish the additional information set forth herein. All capitalized terms contained herein but not otherwise defined shall have the meanings ascribed to such terms in the Schedule 13D. Item 4. Purpose of Transaction Item 4 of the Schedule 13D is hereby amended by the addition of the following: Mr. Icahn stated during a telephone interview on CNBC on December 6, 2011, in response to a question regarding the fact that he owns stock of both the Issuer and Oshkosh Corporation, that the Reporting Persons believe there may be significant synergies between the Issuer and Oshkosh Corporation and that shareholders of both companies could benefit from these synergies and that the Reporting Persons would be supportive of a merger. SIGNATURE After reasonable inquiry and to the best of each of the undersigned knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct. Dated: December 7, 2011 ICAHN PARTNERS MASTER FUND LP ICAHN PARTNERS MASTER FUND II LP ICAHN PARTNERS MASTER FUND III LP ICAHN OFFSHORE LP ICAHN PARTNERS LP ICAHN ONSHORE LP BECKTON CORP. HOPPER INVESTMENTS LLC BARBERRY CORP. HIGH RIVER LIMITED PARTNERSHIP By: Hopper Investments LLC, general partner By: /s/ Edward E. Mattner ------------------------ Name: Edward E. Mattner Title: Authorized Signatory ICAHN CAPITAL LP By: IPH GP LLC, its general partner By: Icahn Enterprises Holdings L.P., its sole member By: Icahn Enterprises G.P. Inc., its general partner IPH GP LLC By: Icahn Enterprises Holdings L.P., its sole member By: Icahn Enterprises G.P. Inc., its general partner ICAHN ENTERPRISES HOLDINGS L.P. By: Icahn Enterprises G.P. Inc., its general partner ICAHN ENTERPRISES G.P. INC. By: /s/ Dominick Ragone -------------------- Name: Dominick Ragone Title: Chief Financial Officer /s/ Carl C. Icahn -------------------- CARL C. ICAHN