               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) JulyAugust 15, 2005


                     NAVISTAR FINANCIAL 2003-A OWNER TRUST
             (Exact name of Registrant as specified in its charter)


                                    Delaware
                 (State or other jurisdiction of incorporation)



              333-67112-04                           32-6022141
      (Commission File Number)            (I.R.S. Employer Identification No.)




 425 N. Martingale Road Schaumburg, Illinois              60173
   (Address of principal executive offices)             (Zip Code)



         Registrant's telephone number including area code 630-753-4000


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                    INFORMATION TO BE INCLUDED IN THE REPORT


Item 8.01  Other Events.

           On JulyAugust 15, 2005, the   Registrant  made  available  the
           Monthly Servicer Certificate for the Period of JuneJuly 2005
           for the NAVISTAR FINANCIAL 2003-A OWNER  TRUST, which is
           attached as Exhibit 20 hereto.


Item 9.01  Financial Statements and Exhibits.


         (c)      See attached Exhibit 20.


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                                   SIGNATURE


Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.


                      NAVISTAR FINANCIAL 2003-A OWNER TRUST
             (Exact name of Registrant as specified in its charter)



Date:  JulyAugust 2724, 2005                                          By:/s/ PAUL E. MARTIN
-----------------------                          --------------------------
                                                 Paul E. Martin
                                                 Vice President & Controller


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                                  EXHIBIT INDEX

Exhibit No.    Description

   20          Navistar Financial 2003-A Owner Trust
               Monthly Servicer Certificate #2627, dated JulyAugust 15, 2005


================================================================================


                                 EXHIBIT 20

                                     Navistar Financial 2003 - A Owner Trust
                                              For the Month of JuneJuly 2005
                                       Distribution Date of JulyAugust 15, 2005
                                                Servicer Certificate  #2627

Original Pool Amount                                                                    $326,316,883.05
Subsequent Receivables (transferred 06/05/03)                    $67,372,775.52
Subsequent Receivables (transferred 07/07/03)                  $106,309,639.77
Subsequent Receivables (transferred xx/xx/xx)                                      $0.00
Subsequent Receivables (transferred xx/xx/xx)                                      $0.00
Beginning Pool Balance                                                                $182174,857594,437326.2061
Beginning Pool Factor                                                                              0.36571543491891

Principal and Interest Collections:
    Principal Collected (Incl. Servicer Advance Repay)    $87,638439,676526.2016
    Interest Collected                                                                    $1,117037,356384.0309
    Mandatory Prepayments                                                                              $0.00
Additional Deposits:

    Repurchase Amounts                                                                               $055,438.0089

    Liquidation Proceeds / Recoveries                                          $271294,001579.8780
Total Additional Deposits                                                                  $271350,001018.8769

Repos / Chargeoffs                                                                                  $8791,945727.5592
Aggregate Number of Notes Charged Off                              117                            111

Total Available Funds                                                                      $98,563826,522928.94

Ending Pool Balance                                                                      $174167,594007,326633.6164
Ending Pool Factor                                                                                    0.34918913340157

Servicing Fee                                                                                          $152145,381495.2027
    memo: Servicer will allocate $1,500.00 of Servicing
          Fee as Administration Fee
Repayment of Servicer Advances                                                              $463,5110.1600

Reserve Account:
                                                                                                                                                               ====================================
    Beginning Balance  (see Memo Item)                                  $10,909812,212463.3012           Memo Item - Reserve Account
    Target Percentage                                                                                       5.50%          Opening balance            $109,057999,159985.0597
    Target Balance                                                                            $9,602185,687419.96          85           + Trans Base                                   $0.00
    Specified Yield Supplement Amount                                                      $0.00                     + Trans Low/0%                               $0.00
    Specified Yield Supplement Amount                                                      $0.00                     + Invest. Income                 $2426,948401.0616
    Specified Reserve Account Balance                                      $9,602185,687419.96          85           + Excess Serv.                   $827786,105075.1999
    Minimum Balance                                                                          $9,999,985.97                     + Transfer (to)
    (Release) / Deposit                                   ($909,226.34)                                                                                            Collections Acct                       $0.00
    Ending(Release) Balance                                       / Deposit                                 ($9812,999,985477.9715)                               ---------------
    Ending Balance                                     $9,999,985.97             Beginning Balance  $10,812,463.12
                                                                               =====================================
-----------------------------------------------------------------------         Beginning Balance   $10,909,212.30
Current Weighted Average APR:                                                                    6.958930%          ====================================
-----------------------------------------------------------------------
-----------------------------------------------------------------------
Current Weighted Average Remaining Term (months):                31              30.1530
-----------------------------------------------------------------------
Delinquencies                                                                                              Dollars         Notes
    Installments:     1 - 30 days                                                   1,205014,465421.03      96030     1,111
                                     31 - 60 days                           223                            433,465537.31      23428       246
                                     60+  days                              106                               131,225640.40       4742        85

           Total:                                       1,535579,155599.74      96800     1,123
        Balances:   60+  days                                                         1,199893,827726.27       4746        85


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Navistar Financial 2003 - A Owner Trust
For the Month of JuneJuly 2005
                                                                                                                                         NOTES
                                                                              TOTAL               CLASS A - 1           CLASS A - 2      CLASS A - 3     CLASS A - 4        CLASS B NOTES
Original Pool Amount                                                 $500,000,000.00 $85,000,000.00     $175,000,000.00 $113,000,000.00 $108,250,000.00   $18,750,000.00
Original Pool Amount

Distributions:
   Distribution Percentages  (1)                                                         0.00%                         0.00%          96.25%           0.00%                     3.75%

   Coupon                                                                                                   1.2500%                     1.3100%         1.7300%         2.2400%                 3.0800%

Beginning Pool Balance                         $182174,857594,437326.2061
Ending Pool Balance                               $174167,594007,326633.6164

Collected Principal                                  $87,175494,165965.0405
Collected Interest                                    $1,117037,356384.0309
Charge - Offs                                                    $8791,945727.5592
Liquidation Proceeds / Recoveries          $271294,001579.8780
Swap Payments to/(from)Trust             $0.00
Servicing & Administration Fee                $152145,381495.2027
Investment Earnings from 
      Pre-Funding Acct.                        $0.00
Cash Transfer from Negative Carry Acct.          $0.00
Cash Transfer from Pre-Funding Acct.                $0.00
Cash Transfer from Reserve Account                    $0.00
Total Collections Avail 
     for Debt Svc                   $98,411681,141433.7467

Beginning Balance                                  $182174,857594,437326.20          61           $0.00                         $0.00  $6456,562609,783539.2935 $108,250,000.00    $109,044734,653787.9126

Interest Due (2)                                            $320308,925664.96          71           $0.00                         $0.00      $9381,078612.0109     $202,066.67           $2524,781985.2895
Interest Paid                                                  $320308,925664.96          71           $0.00                         $0.00      $9381,078612.0109     $202,066.67           $2524,781985.2895
Principal Due                                              $87,263586,110692.59          97           $0.00                         $0.00   $7,953302,243191.9498           $0.00         $309284,866500.6599
Mandatory Prepayments Class A-1 only **           $0.00                     $0.00
Principal Paid                                            $87,263586,110692.59          97           $0.00                         $0.00   $7,953302,243191.9498           $0.00         $309284,866500.6599

Ending Balance                                        $174167,594007,326633.61          64           $0.00                         $0.00  $5649,609307,539347.3537 $108,250,000.00     $9,734450,787286.2627
Note/Certificate Pool Factor (Ending
        Balance/Original Pool Amount)                             Amt                          0.0000                       0.0000          0.50104363          1.0000                   0.51925040
Total Distributions                                  $87,584895,036357.55          68           $0.00                         $0.00   $87,046383,321804.9507     $202,066.67         $335309,647486.9394

Interest Shortfall                                                    $0.00                     $0.00                         $0.00           $0.00           $0.00                     $0.00
Principal Shortfall                                                  $0.00                     $0.00                         $0.00           $0.00           $0.00                     $0.00
   Total Shortfall                                                    $0.00                     $0.00                         $0.00           $0.00           $0.00                     $0.00
Excess Servicing
   (see Memo Item - Reserve Account)Acct     $827786,105075.1999

   Beginning Reserve Acct 
        Balance                      $10,909812,212463.3012
   (Release) / Draw                                    ($909812,226477.3415)
   Ending Reserve Acct Balance            $9,999,985.97

(1) Principal distributions will be paid in the following priority:  First to Class A-1 until paid in full, second 96.25% applied
    sequentially to Class A notes and 3.75% to Class B notes until all Class A Notes are repaid in full, then 100% to Class B Notes.
(2) Class A-1 Interest based on Actual Number of Days.   Interest  for first settlement based off 11 days, from 06/05/03 to 06/16/03
    for Class A-1.  Class A-2, A-3, A-4 and Class B Interest calculated on 10 days   (06/05/03 to 06/15/03).

(* x represents previously paid interest to other classes.)
(* y represents previously paid interest and principal on other classes.)
==============================================================
Memo Item - Advances:
   Servicer Advances - Current Reporting Period (  $46336,511107.16)50
   Total Outstanding Servicer Advances         $2,352388,610717.0757
==============================================================


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Navistar Financial 2003 - A Owner Trust
For the Month of JuneJuly 2005

Trigger Events:  A)  Loss Trigger
                 B)  Delinquency Trigger
                 C)  Noteholders Percent Trigger

                                          5                                 4               3               2               1                             0
                                       Jan-05            Feb-05                       Mar-05          Apr-05         May-05          Jun-05          Jul-05
Remaining Gross Balance                       $247,293,535.85   $239,099,969.27     $228,999,826.03 $218,161,075.70 $209,749,920.62 $200,749,566.26 $190,975,277.73

A)   Loss Trigger:

Principal of Contracts Charged Off         $221,163.55       $574,474.42             $173,434.57      $18,266.91     $237,264.54      $87,945.55
Recoveries                                   $43791,714727.97       92

Recoveries                            $303,312.74             $260,331.08     $542,689.64     $214,382.78     $271,001.87     $294,579.80

Total Charged Off (Months 5, 4, 3)         $969766,072175.5490
Total Recoveries (Months 3, 2, 1)       $1,017028,403074.5029
                                                                     ----------------
Net Loss / (Recoveries) for 3 Mos          ($48261,330898.9639)(a)

Total Balance (Months 5, 4, 3)         $715686,393260,331871.1500 (b)

Loss Ratio Annualized   [(a/b) * (12)]              -0.08114580%

Trigger:  Is Ratio > 1.5%                                         No
B)   Delinquency Trigger:                                                               Apr                                                                                      May-05           MayJun-05            JunJul-05
B)   Delinquency Trigger:
     Balance delinquency 60+ days                                                                                                     $969,697.20      $981,695.35           $1,199,827.27     $1,893,726.46
     As % of Remaining Gross Balance                                                                                                       0.4444946803%                    0.4680359767%          0.5976799161%
     Three Month Average                                                                                                                               0.4555843302%                    0.4330250340%          0.5034068577%

Trigger:  Is Average > 2.0%                                     No

C)   Noteholders Percent Trigger:                   2.0000%
     Ending Reserve Account Balance
     not less than 1% of Initial Aggregate
     Receivables Balance

Trigger:  Is Minimum < 1.0%                                     No

Beginning Balance-Back-up
     Servicer Account                                 $250,000.00
plus:    Monthly Interest Earned                   $1,8030.2900
less:    Monthly Interest Earned
                           returned to NFC         (                $1,8030.29)00
less:    Activity for month                                 $0.00
Ending Balance- Back-up
     Servicer Account                  Servicer     $250,000.00


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Filing Compare · NAVISTAR FINANCIAL RETAIL REC CORP 2003 A OWNER TRUST
