WAIVER
      NO. 4


TO
      RECEIVABLES PURCHASE
      AGREEMENT




THIS
      WAIVER NO. 4(this "Waiver"),dated as of July 20, 2005, is among Truck Retail Accounts
      Corporation, a Delaware corporation ("Seller"
      ),Navistar Financial Corporation, a Delaware corporation
      ("Navistar"),
      asinitial Servicer (Navistar, together with Seller, the
"Seller
      Parties"and each a "Seller
      Party" ),the entities listed on Schedule A to this Agreement
      (together with any of their respective successors and assigns hereunder, the
      "Financial
      Institutions”),Jupiter Securitization Corporation ("Conduit”)and
      JPMorgan Chase Bank, N.A. (successor by merger to Bank One, NA (Main Office
      Chicago)), as agent for the Purchasers hereunder or any successor agent
      hereunder (together with its successors and assigns hereunder, the "Agent”),and
      pertains to that certain RECEIVABLES PURCHASE AGREEMENT dated as of April 8,
      2004 by and among the parties hereto (the "Agreement").Unless defined elsewhere herein, capitalized terms used
      in
      this Waiver have the meanings assigned to such terms in the
      Agreement.




PRELIMINARY
      STATEMENTS




The
      Seller Parties have requested that the Agent and the Purchasers agree to waive
      a
      certain provision of the Agreement; and




The
      Agent
      and the Purchasers are willing to agree to the requested waiver on the terms
      hereinafter set forth.




NOW,
      THEREFORE,in consideration of the premises and the mutual covenants
      herein contained, and for other good and valuable consideration, the receipt
      and
      sufficiency of which are hereby acknowledged, the parties hereto agree as
      follows:




Section
      1.                       Waiver. Compliance
      with Section 9.1(f) of the Agreement is hereby waived for the three Settlement
      Periods ended June 30, 2005, the three Settlement Periods ending July 31, 2005,
      and the three Settlement Periods ending August 31, 2005.




Section
      2.                       Representations
      and
      Warranties. In order to induce the parties to enter into this Waiver,
      each of the Seller Parties hereby represents and warrants to the Agent and
      the
      Purchasers that (a) after giving affect to this Waiver, each of such Seller
      Party's representations and warranties contained in Article V of the Agreement
      is true and correct as of the date hereof, (b) the execution and delivery by
      such Seller Party of this Waiver, and the performance of its obligations
      hereunder, are within its corporate or limited partnership, as applicable,
      powers and authority and have been duly authorized by all necessary corporate
      or
      limited partnership, as applicable, action on its part, and (c) this Waiver
      has
      been duly executed and delivered by such Seller Party and constitutes the legal,
      valid and binding obligation of such Seller Party enforceable against such
      Seller Party in accordance with its terms, except as such enforcement may be
      limited by applicable bankruptcy, insolvency, reorganization or other similar
      laws relating to or limiting creditors' rights generally and by general
      principles of equity (regardless of whether enforcement is sought in a
      proceeding in equity or at law).




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Section
      3.                       Condition Precedent.
      This Waiver shall become effective as of the date first above written upon
      receipt by the Agent of counterparts hereof duly executed by each of the parties
      hereto.




Section
      4.                       Miscellaneous.




(a)                 THIS
      WAIVER SHALL BE GOVERNED AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS
      (AND
      NOT THE LAW OF CONFLICTS) OF THE STATE OF ILLINOIS.




(c)                 Except
      as expressly modified hereby, the Agreement remains unaltered and in full force
      and effect and is hereby ratified and confirmed. This Waiver shall be binding
      upon and inure to the benefit of the parties hereto and their respective
      successors and permitted assigns (including any trustee in
      bankruptcy).




(c)            This
      Waiver may be executed in any number of counterparts and by different parties
      hereto in separate counterparts, each of which when so executed shall be deemed
      to be an original and all of which when taken together shall constitute one
      and
      the same agreement.


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IN
      WITNESSWHEREOF,the
      parties hereto have caused this Waiver to be executed and delivered by their
      duly authorized officers as of the date hereof.





TRUCK
                RETAIL ACCOUNTS CORPORATION
              
              By:      /s/ 
                ANDREW J
                CEDEROTH
              Name:      
                Andrew J. Cederoth
              Title:        
                V.P. & Treasurer
              
              
              NAVISTAR
                FINANCIAL CORPORATION
              
              By:      /s/
                ANDREW J
                CEDEROTH
              Name:     
                Andrew J. Cederoth
              Title:       
                V.P. & Treasurer


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JUPITER
                SECURITIZATION CORPORATION
              
              By:  
                /s/  JILL T
                LANE
              Its:       
                 Authorized Signatory
              
              
              JPMORGAN
                CHASE BANK, N.A., (Sucussor
              by
                merger to Bank One, NA (Main Office Chicago),
              Individually
                as a Financial Institution and as Agent
              
              By:  /s/ JILL
                T LANE
              Its:       
                Vice President


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