EXHIBIT 10.20

                       NAVISTAR 1998 NON-EMPLOYEE DIRECTOR
                                STOCK OPTION PLAN

                         Adopted as of December 16, 1997

1.       Administration

         The Navistar 1998 Non-Employee  Director Stock Option Plan (the "Plan")
will  be  administered   by  the  Board  of  Directors   ("Board")  of  Navistar
International Corporation ("Corporation").

         The  granting  of an option  pursuant  to the Plan will take  place the
business  day  following  the day on which the Board  approves the grant of such
option at its regularly  scheduled  December meeting,  provided that, such grant
will expire if a written  option  agreement  is not signed by the  optionee  and
delivered to the Corporation within thirty (30) days of the date of the grant.

         Subject  to the  express  provisions  of the Plan,  the Board will have
complete authority to interpret the Plan, to prescribe,  amend and rescind rules
and  regulations  relating to it, to determine  the terms and  provisions of the
respective option agreements (which need not be identical) and to make all other
determinations  necessary or advisable for the  administration  of the Plan. The
Board's  determinations  on the matters  referred to in this paragraph 1 will be
conclusive.

2.       Stock Subject to the Plan

         Such shares may be in whole or in part,  as the Board will from time to
time determine,  authorized and unissued shares of Common Stock or issued shares
of Common  Stock which shall have been  reacquired  by the  Corporation.  If any
option  granted under the Plan shall expire or terminate for any reason  without
having been exercised or earned in full,  the shares subject  thereto will again
be available for the purposes of the Plan.

3.       Effectiveness of the Plan

         The Plan will become  effective upon the effective date of its adoption
by the Board.

4.       Eligibility

         Options may be granted only to non-employee  directors of the Board. No
individual who is, at the time of the grant,  an employee of the  Corporation or
of any subsidiary of the Corporation will be eligible to receive an option under
the Plan.


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5.       Number of Shares to Be Granted

         At each regularly  scheduled  December  meeting of the Board, an option
will be granted to each non-employee director for two thousand (2,000) shares of
Common Stock.

6.       Option Prices

         The  purchase  price of the Common Stock under each option will be 100%
of the fair market value of the Common Stock on the business day  following  the
day of grant by the Board.  Such fair  market  value will be  determined  by the
average  of the high and low  prices of the  Common  Stock in the New York Stock
Exchange--Composite Transactions listing published in the Midwest Edition of The
Wall Street Journal or equivalent financial publication.

7.       Exercise Options

         An option granted under the Plan will become exercisable in whole or in
part after the  commencement  of the second year of the term of the option.  The
Board is  authorized  to  establish  the  manner and the  effective  date of the
exercise of an option.  Each option will become  immediately  exercisable in the
event of death,  total and permanent  disability,  retirement in accordance with
the Board's  policy or a "change in control"  of the  Corporation.  A "change in
control"  shall be deemed to have  occurred,  if (A) any "person" or "group" (as
such terms are used in Section 13(d) and 14(d) of the Securities Exchange Act of
1934)  other than  employee  or retiree  benefit  plans or trusts  sponsored  or
established by the Corporation or Navistar  International  Transportation  Corp.
("NITC")  is or becomes the  "beneficial  owner" (as defined in Rule 13d-3 under
the Securities Exchange Act of 1934),  directly or indirectly,  of securities of
the  Corporation  representing  25% or more of the combined  voting power of the
Corporation's  then  outstanding  securities,  (B)  as  the  result  of,  or  in
connection with, any cash tender offer, exchange offer, merger or other business
combination,  sale of assets, proxy or consent solicitation,  contested election
or substantial stock accumulation (a "Control Transaction"),  the members of the
Board of  Directors  of the  Corporation  immediately  prior to the first public
announcement relating to such Control Transaction shall immediately  thereafter,
or within two years, cease to constitute a majority of the Board of Directors of
the Corporation or (C) any dissolution or liquidation of the Corporation or NITC
or an agreement for the sale or  disposition of all or  substantially  all (more
than 50%) of the assets of the  Corporation  or of NITC occurs.  Notwithstanding
the  foregoing,  the sale or disposition of any or all of the assets or stock of
Navistar  Financial  Corporation  shall not be deemed a Change in  Control.  The
purchase price is to be paid in full to the Corporation upon the exercise of the
option either (i) by cash including a personal check payable to the order of the
Corporation  or (ii) by  delivering  at fair market value  Common Stock  already
owned by the  optionee or any  combination  of cash and Common  Stock.  The fair
market value of the Common  Stock so  delivered  will be the average of the high
and low prices of the Common Stock on the day prior to delivery as


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published in the New York Stock  Exchange--Composite  Transactions listed in the
Midwest Edition of the Wall Street Journal or equivalent financial  publication.
An option  granted  under the Plan  will be  exercisable  for a term of ten (10)
years from the date of the grant, and will be subject to earlier  termination as
hereinafter  provided.  Except as provided in  paragraphs  10 and 11 hereof,  no
option may be exercised at any time unless the holder thereof is then a director
of the  Corporation.  The holder of an option  will have none of the rights of a
stockholder  with respect to the shares  subject to option until such shares are
issued  upon  the  exercise  of the  option.  Shares  which  otherwise  would be
delivered  to the holder of an option may be  delivered,  at the election of the
holder,  to the  Corporation  in  payment of any  Federal,  state  and/or  local
withholding taxes due in connection with an exercise.

8.       Non-Transferability of Options

         No option  granted  under the Plan will be  transferable  other than by
will or the laws of descent and  distribution,  and an option may be  exercised,
during the life time of the holder thereof, only by the holder.

9.       Agreement to Serve

         Each  individual  receiving an option will,  as one of the terms of the
option agreement,  agree to remain as a director of the Corporation for a period
of at least one (1) year from the date of granting the option except as provided
in the immediately  following sentence. In the event of retirement in accordance
with the Board's  policy prior to the end of the one year service  period,  each
holder will,  as one of the terms of the option  agreement,  agree to serve as a
consultant  to the  Board for any  remaining  portion  of such one year  service
period.  Such service will (subject to the provisions of paragraph 10 hereof) be
at the pleasure of the Corporation  and at such  compensation as the Corporation
will reasonably determine from time to time.

10.      Termination of Service

         In the event of the  termination  of the  service  of the holder of any
option, other than by reason of a retirement,  permanent and total disability or
death as set forth in paragraph 11, the holder may (unless the option shall have
been  previously  terminated  pursuant to the provisions of paragraph 9 above or
unless otherwise  provided in the option  agreement)  exercise the option at any
time  within  three (3) months  after such  termination,  but not after the date
identified in the option  agreement as the date the options  expire.  Nothing in
the Plan or in any  option  granted  pursuant  to the Plan  will  confer  on any
individual any right to continue in the service of the  Corporation or interfere
in any way with the right of the Board to terminate service at any time.





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11.      Retirement, Total and Permanent Disability or Death of Holder of Option

         In the event of retirement in accordance  with the Board's policy or in
the event of total and permanent disability,  the holder may exercise the option
at any time within three (3) years after such  retirement or such disability but
not after the date  identified  in the option  agreement as the date the options
expire.  In the event of the death of an  individual  to whom an option has been
granted under the Plan, while the option is outstanding,  the option theretofore
granted to the holder may be  exercised  by a legatee or  legatees of the option
holder, or by the personal representative or distributees,  at any time within a
period of one (1) year after  death,  but not after the date  identified  in the
option as the date the options expire.

12.      Adjustments upon Changes in Capitalization

         Notwithstanding  any other provision of the Plan, the option agreements
may contain such  provisions as the Board shall  determine to be appropriate for
the  adjustment  of the number and class of shares  subject to each  outstanding
option and the option prices in the event of changes in, or  distributions  with
respect  to,  the  outstanding  Common  Stock  by  reason  of  stock  dividends,
recapitalizations, mergers, consolidations, split-ups, combinations or exchanges
of shares,  spin-offs and the like,  and, in the event of any such change in, or
distribution with respect to, the outstanding Common Stock, the aggregate number
and class of shares available under the Plan shall be appropriately  adjusted by
the committee, whose determination shall be conclusive.

13.      No Loans to Holders of Options

         Neither the Corporation,  nor any of its subsidiaries,  may directly or
indirectly  lend  money to any  individual  for the  purpose  of  assisting  the
individual  to acquire or carry  shares of Common Stock issued upon the exercise
of options granted under the Plan.

14.      Amendment and Termination

         Unless the Plan shall  theretofore  have been terminated as hereinafter
provided,  the Plan will  terminate  on,  and no option  will be  granted  after
December 17, 2007. The Plan may be terminated, modified or amended by the Board.
No termination,  modification or amendment of the Plan may,  without the consent
of the optionee to whom any option or award shall theretofore have been granted,
adversely affect the rights of such optionee.










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