EXHIBIT 32.1

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

      In connection with the accompanying Annual Report on Form 10-K of Tenneco
Inc. (the "Company") for the period ended December 31, 2005, as filed with the
Securities and Exchange Commission on the date hereof (the "Report"), and
pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, Mark P. Frissora, as Chief Executive Officer of the
Company, and Kenneth R. Trammell, as Chief Financial Officer of the Company,
hereby certify that:

            (1) The Report fully complies with the requirements of Section 13(a)
      or 15(d) of the Securities Exchange Act of 1934; and

            (2) The information contained in the Report fairly presents, in all
      material respects, the financial condition and results of operations of
      the Company.

                                            /s/ MARK P. FRISSORA
                                            ------------------------------------
                                            Mark P. Frissora
                                            Chief Executive Officer

                                            /s/ KENNETH R. TRAMMELL
                                            ------------------------------------
                                            Kenneth R. Trammell
                                            Chief Financial Officer

March 15, 2006

      This certification shall not be deemed "filed" by the Company for purposes
of Section 18 of the Securities Exchange Act of 1934. In addition, this
certification shall not be deemed to be incorporated by reference into any
filing under the Securities Exchange Act of 1933 or the Securities Exchange Act
of 1934.

      A signed original of this written statement required by Section 906 has
been provided to the Company and will be retained by the Company and furnished
to the Securities and Exchange Commission or its staff upon request.