**Exhibit 4.3****FOURTH SUPPLEMENTAL INDENTURE**     **FOURTH SUPPLEMENTAL INDENTURE**(this ***“Supplemental Indenture”***) dated as of June 30, 2007, among**TEPPCO Partners, L.P.,**a Delaware limited partnership (the ***“Partnership”***), **TE Products PipelineCompany, Limited Partnership**, a Texas limited partnership (formerly a Delaware limited partnership,***“TE Products”***), **TCTM, L.P.**, a Delaware limited partnership (***“TCTM”***), **TEPPCO Midstream Companies,L.P.**, a Texas limited partnership (formerly a Delaware limited partnership, ***“TEPPCO Midstream”***),**Val Verde Gas Gathering Company, L.P.,**a Delaware limited partnership (“***Val Verde”***, and togetherwith TE Products, TCTM and TEPPCO Midstream, the ***“Existing Subsidiary Guarantors”***), **TE ProductsPipeline Company, LLC**, a Texas limited liability company, **TEPPCO Midstream Companies, LLC,**a Texaslimited liability company (together with TE Products Pipeline Company, LLC, the ***“New SubsidiaryGuarantors”***), and **U.S. Bank National Association**(as successor trustee to **Wachovia Bank, NationalAssociation**), as trustee under the Indenture referred to below (in such capacity, the ***“Trustee”***).**WITNESSETH:**     WHEREAS, the Partnership and the Existing Subsidiary Guarantors (other than Val Verde) haveheretofore executed and delivered to the Trustee an Indenture dated as of February 20, 2002 (the***“Original Indenture”***), providing for the Partnership’s issuance, from time to time, of its DebtSecurities in one or more series unlimited as to principal amount, and the Guarantees by each ofthe Subsidiary Guarantors of the Debt Securities;     WHEREAS, the Partnership and the Existing Subsidiary Guarantors (other than Val Verde) haveheretofore executed and delivered to the Trustee a First Supplemental Indenture dated as ofFebruary 20, 2002 (the ***“First Supplemental Indenture”***), providing for the Partnership’s issuance ofthe initial series of its Debt Securities under the Indenture, such series known as thePartnership’s 7.625% Senior Notes due 2012 (the ***“2012 Notes”***);     WHEREAS, the Partnership and the Existing Subsidiary Guarantors have heretofore executed anddelivered to the Trustee a Second Supplemental Indenture dated as of June 27, 2002 (the “***SecondSupplemental Indenture***”), providing for the addition of Val Verde as a Subsidiary Guarantor;     WHEREAS, the Partnership and the Existing Subsidiary Guarantors have heretofore executed anddelivered to the Trustee a Third Supplemental Indenture dated as of January 30, 2003 (the “***ThirdSupplemental Indenture***”, and together with the Original Indenture, the First Supplemental Indentureand the Second Supplemental Indenture, the “***Indenture***”), providing for the Partnership’s issuanceof an additional series of its Debt Securities under the Indenture, such series known as thePartnership’s 6.125% Senior Notes due 2013 (the “***2013 Notes***”);     WHEREAS, Section 9.01(g) of the Indenture authorizes the Partnership, the SubsidiaryGuarantors and the Trustee, from time to time and at any time, and without the consent of theHolders, to enter into one or more indentures supplemental to the Indenture to add SubsidiaryGuarantors with respect to any or all Debt Securities;
 

 
     WHEREAS, the New Subsidiary Guarantors are Subsidiaries of the Partnership and the Partnershipdesires to cause each New Subsidiary Guarantor, and each New Subsidiary Guarantor desires tobecome, a Subsidiary Guarantor with respect to the 2012 Notes and the 2013 Notes;     WHEREAS, Section 9.01 of the Indenture authorizes the Trustee to join with the Partnership andthe Subsidiary Guarantors in the execution of this Supplemental Indenture for the purpose of addinga Subsidiary Guarantor, and further provides that any such supplemental indenture may be executedby the Partnership, the Subsidiary Guarantors and the Trustee without the consent of the Holders ofany Debt Securities at the time Outstanding; and     WHEREAS, all things necessary have been done to make the Guarantee of the 2012 Notes and the2013 Notes by each New Subsidiary Guarantor the valid obligation of such New Subsidiary Guarantorand to make this Supplemental Indenture a valid agreement of the Partnership, the ExistingSubsidiary Guarantors and the New Subsidiary Guarantors, in accordance with their respective terms;     NOW, THEREFORE, in consideration of the foregoing and for other good and valuableconsideration, the receipt of which is hereby acknowledged, the Partnership, the ExistingSubsidiary Guarantors, the New Subsidiary Guarantors and the Trustee mutually covenant and agreefor the equal and proportionate benefit of the Holders of the 2012 Notes and the 2013 Notes asfollows:     1. *Capitalized Terms*. Capitalized terms used herein and not defined herein shall have themeaning ascribed to them in the Indenture.     2. *Agreement to Guarantee*. Each New Subsidiary Guarantor hereby agrees, jointly and severallywith all other Subsidiary Guarantors, fully, unconditionally and absolutely to guarantee, to theextent set forth in the Indenture and subject to the provisions of the Indenture, the due andpunctual payment of the principal of, and the premium, if any, and interest on, the 2012 Notes, the2013 Notes and all other amounts due and payable by the Partnership under the Indenture, the 2012Notes and the 2013 Notes, and to be bound by all other provisions of the Indenture applicable toSubsidiary Guarantors. Further, each New Subsidiary Guarantor acknowledges and agrees that itsobligations to the Holders of the 2012 Notes and the 2013 Notes and to the Trustee pursuant to theGuarantee and the Indenture are expressly set forth in Article XIV of the Indenture, and referenceis hereby made to the Indenture for the precise terms of the Guarantee.     3. *No Recourse Against Others.*The General Partner, the Persons who formed the GeneralPartner and the General Partner’s directors, officers, employees, incorporators and members, assuch, shall have no liability for any obligations of the Partnership or the Subsidiary Guarantorsunder the 2012 Notes, the 2013 Notes, the Guarantees, the Indenture or this Supplemental Indentureor for any claim based on, in respect of, or by reason of, such obligations or their creation. Byaccepting a 2012 Note or a 2013 Note, each Holder waived and released all such liability. Suchwaiver and release are a part of the consideration for issuance of the 2012 Notes and the 2013Notes, respectively.
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     4. *NEW YORK LAW TO GOVERN.*THIS SUPPLEMENTAL INDENTURE AND THE GUARANTEES PROVIDED FOR HEREINSHALL BE DEEMED TO BE A NEW YORK CONTRACT AND FOR ALL PURPOSES SHALL BE GOVERNED BY AND CONSTRUEDIN ACCORDANCE WITH THE LAWS OF SAID STATE.     5. *Counterparts*. The parties may sign any number of counterparts of this SupplementalIndenture, each of which shall be an original; but such counterparts shall together constitute butone and the same instrument.     6. *Effect of Headings.*The headings herein are for convenience only and shall not affect theconstruction hereof.[*Remainder of page intentionally left blank; signature pages follow*]
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     IN WITNESS WHEREOF, the parties have caused this Supplemental Indenture to be duly executedand delivered, all as of the date first above written.            **TEPPCO Partners, L.P**.       By Texas Eastern Products Pipeline Company, LLC,    Its General Partner       By: /s/ William G. Manias         William G. Manias    Vice President and Chief Financial Officer       **TE Products Pipeline Company, Limited Partnership**       By TEPPCO GP, Inc.,    Its General Partner       By: /s/ William G. Manias         William G. Manias    Vice President and Chief Financial Officer       **TCTM, L.P.**       By TEPPCO GP, Inc.,    Its General Partner       By: /s/ William G. Manias         William G. Manias    Vice President and Chief Financial Officer       **TEPPCO Midstream Companies, L.P.**       By TEPPCO GP, Inc.,    Its General Partner       By: /s/ William G. Manias         William G. Manias    Vice President and Chief Financial Officer*Signature Page to Fourth Supplemental Indenture*
 

 
            **Val Verde Gas Gathering Company, L.P.**       By TEPPCO NGL Pipelines, LLC,    Its General Partner       By: /s/ William G. Manias         William G. Manias    Vice President and Chief Financial Officer       **TE Products Pipeline Company, LLC**       By TEPPCO GP, Inc.,    Its Manager       By: /s/ William G. Manias         William G. Manias    Vice President and Chief Financial Officer       **TEPPCO Midstream Companies, LLC**       By TEPPCO GP, Inc.,    Its Manager       By: /s/ William G. Manias         William G. Manias    Vice President and Chief Financial Officer       **U.S. Bank National Association**