MORRISON & HECKER L.L.P.
                                Attorneys at Law
                                2600 Grand Avenue
                        Kansas City, Missouri 64108-4606
                            Telephone (816) 691-2600
                             Telefax (816) 474-4208


                                January 29, 1999



Kinder Morgan Energy Partners, L.P.
Kinder Morgan Operating L.P. "A"
Kinder Morgan Operating L.P. "B"
Kinder Morgan Operating L.P. "C"
Kinder Morgan Operating L.P. "D"
Kinder Morgan Natural Gas Liquids Corporation
Kinder Morgan CO2, LLC
Kinder Morgan Bulk Terminals, Inc.
1301 McKinney Street, Suite 3450
Houston, Texas 77010

                  Re:      $250,000,000 6.30% Senior Notes Due 2009

Ladies and Gentlemen:

         We have acted as counsel to Kinder  Morgan  Energy  Partners,  L.P.,  a
Delaware limited  partnership (the  "Partnership"),  and Kinder Morgan Operating
L.P. "A", a Delaware  limited  partnership,  Kinder Morgan Operating L.P. "B", a
Delaware  limited  partnership,  Kinder  Morgan  Operating  L.P. "C", a Delaware
limited  partnership,  Kinder  Morgan  Operating  L.P.  "D", a Delaware  limited
partnership,   Kinder  Morgan  Natural  Gas  Liquids  Corporation,   a  Delaware
corporation,  Kinder Morgan CO2, LLC, a Delaware limited liability company,  and
Kinder Morgan Bulk Terminals, Inc., a Louisiana corporation  (collectively,  the
"Guarantors"), in connection with the proposed offering by the Partnership of an
aggregate of $250,000,000  principal  amount of the  Partnership's  6.30% Senior
Notes due February 1, 2009 (the "Notes") and the  unconditional  guarantee  (the
"Guarantees") of the Notes by the Guarantors.  The Notes will be issued pursuant
to the  Indenture  dated as of  January  29,  1999 (the  "Indenture")  among the
Partnership,  as obligor, the Guarantors, as guarantors,  and U.S. Trust Company
of  Texas,  N.A.,  as  trustee  (the  "Trustee"),   supplemented  by  the  First
Supplemental  Indenture  among the  Partnership,  the Guarantors and the Trustee
dated as of January 29, 1999 (the "First Supplemental Indenture"). In connection
with the proposed  offering,  the Partnership and the Guarantors have filed with
the Securities and Exchange Commission a registration statement on Form S-3 File
Nos.  333-66931,   333-66931-01,   333-66931-02,   333-66931-03,   333-66931-04,
333-66931-05,  333-66931-06,  and 333-66931-07 under the Securities Act of 1933,
as amended (the "Securities Act"). Unless otherwise defined herein,  capitalized
terms used in this opinion shall have the meanings set forth in the Indenture or
the Accord identified in the following paragraph.

      Washington, D.C./Phoenix,Arizona/Overland Park,Kansas/Wichita,Kansas




Kinder, Morgan Energy Partners, L.P.
January 29, 1999
Page 2

         This  Opinion  Letter  is  governed  by,  and shall be  interpreted  in
accordance  with,  the Legal Opinion Accord (the "Accord") of the ABA Section of
Business  law  (1991).  As  a  consequence,   it  is  subject  to  a  number  of
qualifications,  exceptions,  definitions,  limitations  on  coverage  and other
limitations,  all as more particularly described in the Accord, and this Opinion
Letter should be read in conjunction  therewith.  The opinions  expressed herein
are given only with respect to the present status of the substantive laws of the
States of New York and Delaware.  We express no opinion as to any matter arising
under the laws of any other jurisdiction.

         In rendering the opinions set forth below,  we have examined and relied
on the following: (1) the Indenture; (2) the First Supplemental Indenture, which
includes the form of the Notes;  and (3) the  Underwriting  Agreement  among the
Partnership,  the Guarantors,  Goldman Sachs & Co., A.G.  Edwards & Sons,  Inc.,
NationsBank,  Montgomery Securities LLC, Prudential Securities  Incorporated and
Solomon Smith Barney, Inc., each of which has been filed with the Securities and
Exchange  Commission as an exhibit to a Form 8-K. In addition,  we have examined
such other  documents,  materials and authorities as we have deemed necessary in
order to enable us to render our opinions set forth below.

         Based on and  subject to the  foregoing  and other  qualifications  set
forth below:

         1. The Notes  proposed to be issued by the  Partnership  have been duly
authorized  for issuance and are valid and legally  binding  obligations  of the
Partnership enforceable in accordance with their terms.

         2. The Guarantees are enforceable in accordance with their terms as set
forth under the Indenture.

         The General  Qualifications  apply to the opinions set forth above (the
Remedies  Opinion).  In addition to the  General  Qualifications,  we express no
opinion as to the enforceability of any provisions contained in the Notes or the
Guaranties  purporting  to: (i) allow the  acceleration  of the  maturity of any
indebtedness or the exercise of any other rights without notice to the person or
entity  signatory  thereto or bound  thereby;  (ii) restrict  access to legal or
equitable  remedies  (including,  without  limitation,  proper  jurisdiction and
venue); (iii) establish  evidentiary  standards;  (iv) waive the benefits of any
statute of limitation or any applicable  bankruptcy,  insolvency or usury law or
stay or extension law or waive any rights under any applicable statutes or rules
hereafter  enacted or  promulgated;  or (v) preserve and maintain a  guarantor's
liability  despite the fact that the  guaranteed  debt is  unenforceable  due to
illegality.  In addition,  the  enforceability of the rights to  indemnification
contained in the  Indenture  may be limited by Federal or New York State laws or
the policies underlying such laws. We note that the Trust Indenture Act provides
that certain provision of the Trust Indenture Act are automatically  included in
the Indenture unless expressly  excluded.  To the extent that the Indenture does
not expressly  exclude or waive such provisions of the Trust Indenture Act, such
provisions may supersede or override similar provisions in the Indenture.





Kinder, Morgan Energy Partners, L.P.
January 29, 1999
Page 3

         We hereby  consent  to the  filing of this  letter as an Exhibit to the
Form 8-K and to the reference of this firm under the heading "Legal  Matters" in
the Prospectus forming part of the Registration  Statement.  This consent is not
to be construed as an admission  that we are a person whose  consent is required
to be filed with the  Registration  Statement  under the  provisions of the Act.
This opinion is rendered  solely for your benefit in  connection  with the above
matter and may not be relied  upon in any  manner by any other  person or entity
without our express written consent.

                                                     Very truly yours,

                                                     MORRISON & HECKER L.L.P.

                                                    /s/ Morrison & Hecker L.L.P.