Document:

<PAGE>
                                                                  EXHIBIT 4.5(h)

                      FOURTH AMENDMENT TO CREDIT AGREEMENT

          FOURTH AMENDMENT, dated as of October 7, 2005 (this "Amendment"), to
the Amended and Restated Credit Agreement, dated as of December 12, 2003
(amending and restating the Credit Agreement dated as of September 30, 1999) (as
amended, supplemented, or otherwise modified from time to time, the "Credit
Agreement"), among TENNECO AUTOMOTIVE INC., a Delaware corporation (the
"Borrower"), the several lenders from time to time parties thereto (the
"Lenders"), JPMORGAN CHASE BANK, N.A., a national banking association (as
successor to JPMorgan Chase Bank), as administrative agent for the Lenders (in
such capacity, the "Administrative Agent"), and the other financial institutions
named therein as agents for the Lenders (in such capacity, collectively, the
"Other Agents").

                              W I T N E S S E T H:
                              - - - - - - - - - -

          WHEREAS, the Borrower, the Lenders and the Administrative Agent and
the Other Agents are parties to the Credit Agreement;

          WHEREAS, the Borrower has requested that the Credit Agreement be
amended as set forth herein;

          WHEREAS, the Lenders, the Administrative Agent and the Other Agents
are willing to agree to such amendment of the Credit Agreement, subject to the
terms and conditions set forth herein;

          NOW, THEREFORE, in consideration of the premises and mutual covenants
contained herein, the Borrower, the Lenders, the Administrative Agent and the
Other Agents hereby agree as follows:

          1. Defined Terms. Unless otherwise defined herein, capitalized terms
which are defined in the Credit Agreement, as amended hereby, are used herein as
therein defined.

          2. Amendments to Credit Agreement.

             (a) Section 1.1 of the Credit Agreement is hereby amended by

               (i) adding the following new definitions in proper alphabetical
     order:

          "Cash Management Obligations": as defined in the Guarantee and
     Collateral Agreement.

          "Cash Pooling Agreement": an agreement, substantially in the form of
     the Cash Pooling Agreement draft dated July 21, 2005 ("Draft Pooling
     Agreement") by and among Borrower and/or any of its Subsidiaries, on the
     one hand, and one or more banks or similar financing institutions, on the
     other hand, together with any documents evidencing or governing any
     obligations relating thereto (including any guarantee agreements and
     security documents contemplated by or customary in connection with the
     Draft Pooling Agreement), in each case as such agreements may be amended
     (including any

<PAGE>
                                                                               2

     amendment and restatement thereof), supplemented or otherwise modified from
     time to time, including any agreement extending the maturity of,
     refinancing, replacing or otherwise restructuring obligations (or adding
     Foreign Subsidiaries as additional parties or other Subsidiaries as
     guarantors thereunder) under such agreement or any successor or replacement
     agreement and whether by the same or any other lender or group of lenders,
     provided that the terms of any such amendment, restatement, supplement or
     modification, extension, refinancing, replacement or other agreement are
     similar in all material respects to those in the Draft Pooling Agreement.
     The Cash Pooling Agreement provides a cash management system for Foreign
     Subsidiaries of the Borrower, and obligations of Foreign Subsidiaries
     thereunder may be guaranteed by the Borrower and its Domestic Subsidiaries,
     provided, however, that neither the Borrower nor any of its Domestic
     Subsidiaries may grant a security interest in the Collateral or their other
     assets for the purpose of such guarantee except to the extent the secured
     party is a Lender (or any Affiliate of a Lender).

          "Fourth Amendment": the Fourth Amendment dated as of October 7, 2005
     to this Agreement.

          "Fourth Amendment Effective Date": the date on which the conditions
     set forth in Section 4 of the Fourth Amendment shall have been satisfied,
     which date is October 20, 2005.

               (ii) in the definition of "Obligations", adding (A) the phrase
     "Cash Management Obligations," after the phrase "the Letters of Credit,"
     and (B) the phrase "or Cash Management Obligations" after the phrase "(or,
     in the case of the Hedge Agreements".

             (b) Section 2.6(c) of the Credit Agreement is amended by (i)
deleting the amount "$80,000,000" and substituting therefor the phrase
"$50,000,000 after the Fourth Amendment Effective Date", (ii) deleting the
amount "$300,000,000" and substituting therefor the amount "$350,000,000", (iii)
adding after the phrase "shall accept" which appears in the third sentence the
phrase "and shall be deemed to have accepted" and (iv) adding after the phrase
"shall make" which appears in the third sentence the phrase "and shall be deemed
to have made".

             (c) Section 2.13 of the Credit Agreement is amended by deleting
paragraph (f).

             (d) Section 7.2 of the Credit Agreement is amended by (i) deleting
the word "and" from the end of clause (k), (ii) deleting the period from the end
of clause (l) and substituting therefor the phrase "; and" and (iii) adding the
following at the end thereof:

             (m) Indebtedness in respect of Cash Management Obligations,
          including the Cash Pooling Agreement, or guarantees thereof, including
          the guarantee set forth in Section 2.1(f) of the Guarantee and
          Collateral Agreement.

             (e) Section 7.3 of the Credit Agreement is amended by deleting from
paragraph (p) the phrase "7.2(k)" and substituting therefor the phrase "7.2(l)".

<PAGE>
                                                                               3

             (f) Section 7.3 of the Credit Agreement is amended by (i) deleting
the word "and" from the end of clause (o), (ii) deleting the period from the end
of clause (p) and substituting therefor the phrase "; and " and (iii) adding the
following at the end thereof:

             (q) Liens on cash, cash equivalents, deposit accounts and similar
          items of Foreign Subsidiaries securing Cash Management Obligations,
          including obligations in respect of any Cash Pooling Agreement, and
          guarantees by the Borrower or any of its Subsidiaries of such Cash
          Management Obligations or other Obligations (it being understood that
          the Borrower and the Domestic Subsidiaries may not provide a security
          interest in the Collateral or their other assets for Cash Management
          Obligations or obligations under any Cash Pooling Agreement to benefit
          Foreign Subsidiaries except to the extent the secured party is a
          Lender (or any Affiliate of a Lender)).

             (g) Section 7.9 of the Credit Agreement is amended by deleting the
last sentence and substituting therefor the following:

          Notwithstanding the foregoing, as long as no Default or Event of
          Default has occurred and is continuing the Borrower may purchase and
          cancel or redeem its Senior Subordinated Notes from the Net Cash
          Proceeds of Permitted Refinancing Indebtedness or from the Net Cash
          Proceeds of shares of common stock of the Borrower, in each case
          issued within 180 days prior to such purchase and cancellation or
          redemption.

             (h) Section 7.15 of the Credit Agreement is amended by deleting the
phrase "substantially concurrently therewith" from the last sentence and
substituting therefor, "in each case within 180 days prior to such purchase and
cancellation or redemption".

          3. Representations and Warranties. The Borrower hereby confirms that
the representations and warranties set forth in Section 4 of the Credit
Agreement, as amended by this Amendment, are true and correct in all material
respects as if made as of the Fourth Amendment Effective Date (except such
representations and warranties as are made as of a particular date, which such
representations and warranties shall be true and correct in all material
respects as if made as of such date). The Borrower represents and warrants that,
after giving effect to this Amendment, no Default or Event of Default has
occurred and is continuing.

          4. Effectiveness. This Amendment shall become effective as of the date
the conditions below are satisfied (the "Fourth Amendment Effective Date"):

             (a) Amendment. The Administrative Agent shall have received this
Amendment executed and delivered by the Administrative Agent, the Borrower and
the Required Lenders (or, in the case of any Lender, a lender addendum or
joinder agreement in a form specified by the Administrative Agent).

             (b) Amendment of the Guarantee and Collateral Agreement. The
Administrative Agent shall have received the First Amendment to the Guarantee
and Collateral Agreement, executed and delivered by an authorized officer of the
Borrower and each other

<PAGE>
                                                                               4

Loan Party. The Lenders authorize the Administrative Agent to execute and
deliver such First Amendment.

          5. Continuing Effect of the Credit Agreement. This Amendment shall not
constitute an amendment or waiver of any provision of the Credit Agreement not
expressly referred to herein and shall not be construed as a waiver or consent
to any further or future action on the part of the Borrower that would require a
waiver or consent of the Lenders, the Administrative Agent or the Other Agents.
Except as expressly amended hereby, the provisions of the Credit Agreement are
and shall remain in full force and effect.

          6. Counterparts. This Amendment may be executed by the parties hereto
in any number of separate counterparts (including telecopied counterparts), each
of which shall be deemed to be an original, and all of which taken together
shall be deemed to constitute one and the same instrument.

          7. GOVERNING LAW. THIS AMENDMENT SHALL BE GOVERNED BY, AND CONSTRUED
AND INTERPRETED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

<PAGE>

          IN WITNESS WHEREOF, the parties hereto have caused this Amendment to
be duly executed and delivered by their respective proper and duly authorized
officers as of the day and year first above written.

                                        TENNECO AUTOMOTIVE INC.

                                        By:  /s/ John E. Kunz
                                           ---------------------------------
                                           Name: John E. Kunz
                                           Title: Vice President and Treasurer

                                        JPMORGAN CHASE BANK, N.A., as
                                        Administrative Agent and as a Lender

                                        By:  /s/ Richard W. Duker
                                           ---------------------------------
                                           Name: Richard W. Duker
                                           Title: Managing Director<PAGE>
                                                                  EXHIBIT 4.5(i)

              FIRST AMENDMENT TO GUARANTEE AND COLLATERAL AGREEMENT

          FIRST AMENDMENT, dated as of October 7, 2005 (this "Amendment"), to
the Guarantee and Collateral Agreement, dated as of November 4, 1999 (as
amended, supplemented, or otherwise modified from time to time, the "Guarantee
and Collateral Agreement"), among TENNECO AUTOMOTIVE INC., a Delaware
corporation (the "Borrower"), TENNECO AUTOMOTIVE OPERATING COMPANY INC., TENNECO
INTERNATIONAL HOLDING CORP., TENNECO GLOBAL HOLDINGS INC., THE PULLMAN COMPANY,
TMC TEXAS INC. and CLEVITE INDUSTRIES INC. (collectively, the "Grantors"),
JPMORGAN CHASE BANK, N.A., a national banking association (as successor to The
Chase Manhattan Bank), as administrative agent (in such capacity, the
"Administrative Agent").

                              W I T N E S S E T H:
                              - - - - - - - - - -

          WHEREAS, the Borrower has entered into the Credit Agreement dated as
of September 30, 1999 (as the same has been amended prior to December 12, 2003,
the "Original Credit Agreement") with the several banks and other financial
institutions or entities from time to time parties thereto (the "Lenders"),
certain other agents, and the Administrative Agent, providing for the making of
Loans to, and the issuance of Letters of Credit for the account of, the
Borrower, as contemplated therein;

          WHEREAS, the Borrower, the Lenders, the Administrative Agent, Citicorp
North America, Inc. and Bank of America, N.A., as Co-Documentation Agents, and
Deutsche Bank Securities Inc., as Syndication Agent, have entered into that
certain Amended and Restated Credit Agreement, dated as of December 12, 2003 (as
amended pursuant to First Amendment dated as of April 30, 2004, Second Amendment
dated as of November 17, 2004, Third Amendment and Waiver dated as of February
17, 2005, and Fourth Amendment dated as of October 7, 2005 (the "Fourth
Amendment"), collectively, the "Amended and Restated Credit Agreement"), which
amended and restated in its entirety the Original Credit Agreement. The Original
Credit Agreement, as amended by the Amended and Restated Credit Agreement, and
as the same may be amended, modified, waived, restated, substituted or otherwise
supplemented from time to time, are collectively referred to herein as the
"Credit Agreement";

          WHEREAS, the Administrative Agent and the Lenders have requested that
the Guarantee and Collateral Agreement be amended as set forth herein;

          WHEREAS, the Borrower and the Grantors are willing to agree to such
amendment of the Guarantee and Collateral Agreement, subject to the terms and
conditions set forth herein;

          NOW, THEREFORE, in consideration of the premises and mutual covenants
contained herein, the Borrower, the Grantors, the Lenders, the Administrative
Agent and the Other Agents hereby agree as follows:

          1. Defined Terms. Unless otherwise defined herein, capitalized terms
which are defined in the Guarantee and Collateral Agreement, as amended hereby,
are used herein as therein defined.

<PAGE>
                                                                               2

          2. Amendments to Guarantee and Collateral Agreement.

             (a) Section 1.1(b) of the Guarantee and Collateral Agreement is
hereby amended by substituting the following definitions for the existing
definitions:

          "Cash Management Obligation": any obligation of the Borrower or any of
     its Subsidiaries in respect of (i) overdrafts and related liabilities owed
     to any Lender (or any Affiliate of a Lender) that arise from treasury,
     depositary or cash pooling or management services including in connection
     with any automated clearing house transfers of funds or any similar
     transactions or (ii) credit and/or purchasing cards issued by any Lender
     (or any Affiliate of a Lender) to or for the benefit or account of the
     Borrower or any of its Subsidiaries or their respective employees. For the
     avoidance of doubt, the parties agree that any obligation of the Borrower
     or its Subsidiaries to a Lender (or its Affiliate) under any Cash Pooling
     Agreement to which such Lender (or its Affiliate) is a party constitutes a
     "Cash Management Obligation" for purposes hereof.

          "Guarantor Obligations": with respect to any Guarantor (i) all
     obligations and liabilities of such Guarantor which may arise under or in
     connection with this Agreement (including, without limitation, Section 2)
     or any other Loan Document to which such Guarantor is a party, (ii) all
     obligations of liabilities of such Guarantor under or in respect of Lender
     Hedge Agreements to which such Guarantor is a party and (iii) all
     obligations and liabilities of such Guarantor in respect of or in
     connection with Cash Management Obligations; in each case whether on
     account of guarantee obligations, reimbursement obligations, fees,
     indemnities, costs, expenses or otherwise and whether matured or contingent
     (including, without limitation, all fees and disbursements of counsel to
     the Administrative Agent or to the Lenders that are required to be paid by
     such Guarantor pursuant to the terms of this Agreement or any other Loan
     Document).

             (b) Section 2.1 of the Guarantee and Collateral Agreement is
amended by inserting the following paragraph as subsection 2.1(f):

             (f) The Borrower hereby unconditionally guarantees to the
          Administrative Agent, for the ratable benefit of the Lenders (and
          their Affiliates) and their respective successors, indorsees,
          transferees and assigns, the prompt and complete payment and
          performance by its Subsidiaries of their Cash Management Obligations
          and their obligations and liabilities under the Lender Hedge
          Agreements.

          3. Acknowledgement of Security Documents.

             (a) Each of the parties hereto hereby agrees with respect to each
Security Document to which it is a party that all of its obligations,
liabilities and indebtedness under such Security Document shall remain in full
force and effect on a continuous basis, unimpaired, uninterrupted and
undischarged, after giving effect to the Fourth Amendment, including its
guarantee of the obligations, liabilities and indebtedness of the other Loan
Parties under the Credit Agreement.

<PAGE>
                                                                               3

             (b) Each of the parties hereto hereby represents and warrants to
the Administrative Agent and each Lender that all of the Liens and security
interests created and arising under such Security Document remain in full force
and effect on a continuous basis, and the perfected status and priority of each
such Lien and security interest continues in full force and effect on a
continuous basis, unimpaired, uninterrupted and undischarged, after giving
effect to the Fourth Amendment, as collateral security for its obligations,
liabilities and indebtedness under the Credit Agreement and under its guarantees
in the Security Documents.

             (c) The Borrower hereby agrees all of the obligations, liabilities
and indebtedness of the Borrower under the Credit Agreement are continued in
full force and effect on a continuous basis, unimpaired, uninterrupted and
undischarged, after giving effect to the Fourth Amendment.

          4. Acknowledgement of the Fourth Amendment. The Guarantors hereby
acknowledge and agree to all of the terms of the Fourth Amendment.

          5. Effectiveness. This Amendment shall become effective as of the date
the Administrative Agent shall have received this Amendment executed and
delivered by the Administrative Agent, the Borrower and the Guarantors.

          6. Continuing Effect of the Guarantee and Collateral Agreement. This
Amendment shall not constitute an amendment or waiver of any provision of the
Guarantee and Collateral Agreement not expressly referred to herein and shall
not be construed as a waiver or consent to any further or future action on the
part of the Borrower or the Grantors that would require a waiver or consent of
the Lenders or the Administrative Agent. Except as expressly amended hereby, the
provisions of the Guarantee and Collateral Agreement are and shall remain in
full force and effect.

          7. Counterparts. This Amendment may be executed by the parties hereto
in any number of separate counterparts (including telecopied counterparts), each
of which shall be deemed to be an original, and all of which taken together
shall be deemed to constitute one and the same instrument.

          8. GOVERNING LAW. THIS AMENDMENT SHALL BE GOVERNED BY, AND CONSTRUED
AND INTERPRETED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

<PAGE>

          IN WITNESS WHEREOF, the parties hereto have caused this Amendment to
be duly executed and delivered by their respective proper and duly authorized
officers as of the day and year first above written.

                                       TENNECO AUTOMOTIVE INC.
                                       TENNECO AUTOMOTIVE OPERATING COMPANY INC.
                                       TENNECO INTERNATIONAL HOLDING CORP.
                                       TENNECO GLOBAL HOLDINGS INC.
                                       THE PULLMAN COMPANY
                                       TMC TEXAS INC.
                                       CLEVITE INDUSTRIES INC.

                                       By:  /s/ John E. Kunz
                                          ---------------------------------
                                          Name: John E. Kunz
                                          Title: Vice President and Treasurer

                                       JPMORGAN CHASE BANK, N.A., as
                                       Administrative Agent and as a Lender

                                       By:  /s/ Richard W. Duker
                                          ---------------------------------
                                          Name: Richard W. Duker
                                          Title: Managing Director

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00092-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00092-of-00352.parquet"}]]