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                                                                       Exhibit 5


                                 BAKER & DANIELS
                      300 North Meridian Street, Suite 2700
                           Indianapolis, Indiana 46204
                       (317) 237-0300 (317) 237-1000 (fax)


April 11, 2001


ArvinMeritor, Inc.
2135 West Maple Road
Troy, Michigan  48084-7186

Ladies and Gentlemen:

         We have acted as counsel for ArvinMeritor, Inc, an Indiana corporation
(the "Company"), in connection with the proposed issuance and sale of up to
$750,000,000 (or its equivalent (based on the applicable exchange rate at the
time of sale) in one or more foreign currencies or currency units) aggregate
principal amount of debt securities of the Company (the "Debt Securities").

         In connection therewith, we have examined the following documents:

         (a) the Registration Statement on Form S-3 (the "Registration
Statement") to be filed by the Company under the Securities Act of 1933, as
amended (the "Act"), relating to the Debt Securities; and

         (b) the Indenture between the Company as successor to Meritor
Automotive, Inc., and The Chase Manhattan Bank ("Chase Manhattan"), as Trustee,
dated as of April 1, 1998, as supplemented by the First Supplemental Indenture
dated as of July 7, 2000 between the Company and Chase Manhattan, pursuant to
which the Debt Securities are to be issued (the "Indenture").

         We have also examined such corporate records and documents of the
Company, and have reviewed and considered such questions of law and fact, as we
deemed necessary or appropriate as a basis for the opinions expressed herein. In
our examination, we have assumed the genuineness of all signatures, the legal
capacity of all natural persons, the authenticity of all documents submitted to
us as originals, the conformity to original documents of all documents submitted
to us as copies and the authenticity of the originals of such copies. As to
facts relevant to the opinions expressed herein, we have relied upon
certificates, statements or representations of officers of the Company, public
officials and others, without any independent verification thereof.

         Based upon and subject to the foregoing, we are of the opinion that:

         1. The Company is validly existing as a corporation under the laws of
the State of Indiana.
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ArvinMeritor, Inc.                    -2-                         April 11, 2001




         2. When (i) the Registration Statement has become effective under the
Act, and (ii) the Debt Securities have been duly authorized, executed and
authenticated as provided in the Indenture and delivered against payment
therefor, the Debt Securities will be legally and validly issued and will
constitute the valid and binding obligations of the Company, enforceable against
the Company in accordance with their terms, except as enforcement thereof may be
limited by (a) bankruptcy, insolvency, fraudulent conveyance or transfer,
reorganization, rearrangement, receivership, moratorium or other laws and
matters of public policy now or hereafter in effect relating to or affecting
creditors' rights generally, (b) general equity principles, (c) requirements
that a claim with respect to any Debt Securities denominated other than in U.S.
dollars (or a foreign currency or composite currency judgment in respect of such
claim) be converted into U.S. dollars at a rate of exchange prevailing on a date
determined pursuant to applicable law, (d) governmental authority to limit,
delay or prohibit the making of payments outside the United States, and (e) the
enforceability of forum selection clauses in the federal courts. To the extent
that the obligations of the Company under such Debt Securities may be dependent
upon such matters, we assume for purposes of this opinion that Chase Manhattan
is a New York banking corporation at all times duly incorporated, validly
existing and in good standing under the laws of the jurisdiction of its
incorporation with full power and authority to enter into and perform its
obligations under the Indenture, and that the Indenture will have been, before
the issuance and sale of such Debt Securities, duly authorized, executed and
delivered by Chase Manhattan and will, at such time, constitute the valid and
legally binding obligation of Chase Manhattan, enforceable against Chase
Manhattan in accordance with its terms.

           We consent to the filing of this opinion as an exhibit to the
Registration Statement and to the reference to us under the heading "Legal
Matters" in the Prospectus included in the Registration Statement. In giving
such consent, we do not admit that we come within the category of persons whose
consent is required under Section 7 of the Act, or the rules or regulations of
the Securities and Exchange Commission thereunder.

                                             Yours very truly,

                                             /s/  Baker & Daniels
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