Registration Rights Agreement

Exhibit 4.3

Execution Copy

REGISTRATION RIGHTS AGREEMENT

by and among

Williams Partners L.P.

Williams Partners Finance Corporation

and

Citigroup Global Markets Inc.

Lehman Brothers Inc.

as Representatives of
the Initial Purchasers

Dated as of June 20, 2006

TABLE OF CONTENTS

				Page
Section 1.		Definitions			1
Section 2.		Securities Subject to this Agreement			3
Section 3.		Registered Exchange Offer			4
Section 4.		Shelf Registration			5
Section 5.		Additional Interest			6
Section 6.		Registration Procedures			7
Section 7.		Registration Expenses			10
Section 8.		Indemnification			13
Section 9.		Rule 144 and 144A Information			15
Section 10.		Participation in Underwritten Registrations			15
Section 11.		Selection of Underwriters			15
Section 12.		Miscellaneous			15

REGISTRATION RIGHTS AGREEMENT

     This Registration Rights Agreement (this “Agreement”) is made and entered into as of June 20, 2006, by and among Williams Partners L.P., a Delaware limited partnership (the “Partnership”), and Williams Partners Finance Corporation, a Delaware corporation (“Williams Finance,” and together with the Partnership, the “Issuers”), and Citigroup Global Markets Inc. and Lehman Brothers Inc., as representatives (collectively, the “Representatives”) of certain purchasers, including the Representatives (collectively, the “Initial Purchasers”), who have agreed to purchase the Issuers’ 7 1/2% Senior Notes due 2011 (the “Initial Securities”) pursuant to the Purchase Agreement (as defined below).

     This Agreement is made pursuant to the Purchase Agreement, dated June 15, 2006 (the “Purchase Agreement”), among the Issuers and the Initial Purchasers (i) for the benefit of the Initial Purchasers and (ii) for the benefit of the Holders from time to time of the Initial Securities, including the Initial Purchasers. In order to induce the Initial Purchasers to purchase the Initial Securities, the Issuers have agreed to provide the registration rights set forth in this Agreement. The execution and delivery of this Agreement is a condition to the obligations of the Initial Purchasers set forth in Section 6 of the Purchase Agreement.

     The parties hereby agree as follows:

     Section 1. Definitions. As used in this Agreement, the following capitalized terms shall have the following meanings:

     Additional Interest: As defined in Section 5 hereof.

     Advice: As defined in the last paragraph of Section 6(c) hereof.

     Agreement: As defined in the preamble hereto.

     Blackout Period: As defined in the last paragraph of Section 4(a) hereof.

     Broker-Dealer: Any broker or dealer registered under the Exchange Act.

     Business Day: As defined in the Indenture.

     Closing Date: The date of this Agreement.

     Commission: The Securities and Exchange Commission.

     Consummate: A registered Exchange Offer shall be deemed “Consummated” for purposes of this Agreement upon the occurrence of (i) the filing and effectiveness under the Securities Act of the Exchange Offer Registration Statement relating to the Exchange Securities to be issued in the Exchange Offer, (ii) the maintenance of such Registration Statement continuously effective and the keeping of the Exchange Offer open for a period not less than the minimum period required pursuant to Section 3(b) hereof, and (iii) the delivery by the Issuers to the Registrar under the Indenture of Exchange Securities in the same aggregate principal amount

as the aggregate principal amount of Initial Securities that were tendered by Holders thereof pursuant to the Exchange Offer.

     Effectiveness Target Date: As defined in Section 5 hereof.

     Exchange Act: The Securities Exchange Act of 1934, as amended.

     Exchange Offer: The Issuers’ offer to the Holders of all outstanding Transfer Restricted Securities of the opportunity to exchange all such outstanding Transfer Restricted Securities held by such Holders for Exchange Securities in an aggregate principal amount equal to the aggregate principal amount of the Transfer Restricted Securities tendered in such exchange offer by such Holders.

     Exchange Offer Registration Statement: The Registration Statement relating to the Exchange Offer, including the related Prospectus.

     Exchange Securities: The 7 1/2% Senior Notes due 2011, of the same series under the Indenture as the Initial Securities, to be issued to Holders in exchange for Transfer Restricted Securities pursuant to this Agreement.

     Exempt Resales: The transactions in which the Initial Purchasers propose to sell the Initial Securities to certain “qualified institutional buyers,” as such term is defined in Rule 144A under the Securities Act and to certain non-U.S. persons pursuant to Regulation S under the Securities Act.

     Holder: As defined in Section 2(b) hereof.

     Indemnified Holder: As defined in Section 8(a) hereof.

     Indenture: The Indenture, dated as of June 20, 2006 by and among the Issuers and the Trustee, pursuant to which the Securities are to be issued, as such Indenture is amended or supplemented from time-to-time in accordance with the terms thereof.

     Initial Placement: The issuance and sale by the Issuers of the Initial Securities to the Initial Purchasers pursuant to the Purchase Agreement.

     Initial Purchasers: As defined in the preamble hereto.

     Initial Securities: As defined in the preamble hereto.

     Issuers: As defined in the preamble hereto.

     NASD: NASD Inc.

     Partnership: As defined in the preamble hereto.

     Person: An individual, partnership, limited liability company, corporation, trust or unincorporated organization, or a government or agency or political subdivision thereof.

     Prospectus: The prospectus included in a Registration Statement, as amended or supplemented by any prospectus supplement and by all other amendments thereto, including post-effective amendments, and all material incorporated by reference into such Prospectus.

     Registration Default: As defined in Section 5 hereof.

     Registration Statement: Any registration statement of the Partnership relating to (a) an offering of Exchange Securities pursuant to an Exchange Offer or (b) the registration for resale of Transfer Restricted Securities pursuant to the Shelf Registration Statement, which is filed pursuant to the provisions of this Agreement, in each case, including the Prospectus.

     Representatives: As defined in the preamble hereto.

     Securities: The Initial Securities and the Exchange Securities.

     Securities Act: The Securities Act of 1933, as amended.

     Shelf Filing Deadline: As defined in Section 4(a)(x) hereof.

     Shelf Registration Statement: As defined in Section 4(a)(x) hereof.

     Transfer Restricted Securities: Each Initial Security, until the earliest to occur of (a) the date on which such Initial Security is exchanged in the Exchange Offer for an Exchange Security entitled to be resold to the public by the Holder thereof without complying with the prospectus delivery requirements of the Securities Act, (b) the date on which such Initial Security has been effectively registered under the Securities Act and disposed of in accordance with a Shelf Registration Statement, (c) the date on which such Initial Security is distributed to the public pursuant to Rule 144(k) under the Securities Act or by a Broker-Dealer pursuant to the “Plan of Distribution” contemplated by the Exchange Offer Registration Statement (including delivery of the Prospectus contained therein) and (d) the date on which such Initial Securities cease to be outstanding for purposes of the Indenture.

     Trust Indenture Act: The Trust Indenture Act of 1939, as amended.

     Trustee: JPMorgan Chase Bank, N.A.

     Underwritten Offering: An offering in which securities of the Partnership are sold to an underwriter for reoffering to the public.

     Williams Finance: As defined in the preamble hereto.

     Section 2. Securities Subject to this Agreement.

     (a) Transfer Restricted Securities. The Transfer Restricted Securities are entitled to the benefits of this Agreement.

     (b) Holders of Transfer Restricted Securities. A Person is deemed to be a holder of Transfer Restricted Securities (each, a “Holder”) whenever such Person owns Transfer Restricted Securities.

     Section 3. Registered Exchange Offer.

     (a) Unless the Exchange Offer shall not be permissible under applicable law or Commission policy, the Issuers shall (i) cause to be filed with the Commission on or prior to 270 days after the Closing Date, a Registration Statement under the Securities Act relating to the Exchange Securities (other than Transfer Restricted Securities acquired by any Broker-Dealer directly from the Issuers) and the Exchange Offer, (ii) use commercially reasonable efforts to cause such Registration Statement to be declared effective by the Commission on or prior to 360 days after the Closing Date, and (iii) upon the effectiveness of such Registration Statement, promptly commence the Exchange Offer. The Exchange Offer shall be on the appropriate form permitting registration of the Exchange Securities to be offered in exchange for the Transfer Restricted Securities (other than Transfer Restricted Securities acquired by any Broker-Dealer directly from the Issuers) and to permit resales of Initial Securities held by Broker-Dealers as contemplated by Section 3(c) hereof.

     (b) The Issuers shall use commercially reasonable efforts to cause the Exchange Offer to be Consummated no later than 40 Business Days after the Exchange Offer Registration Statement has become effective.

     (c) The Issuers shall indicate in a “Plan of Distribution” section contained in the Prospectus forming a part of the Exchange Offer Registration Statement that any Broker-Dealer who holds Initial Securities that are Transfer Restricted Securities and that were acquired for its own account as a result of market-making activities or other trading activities (other than Transfer Restricted Securities acquired directly from the Issuers) may exchange such Initial Securities pursuant to the Exchange Offer; however, such Broker-Dealer may be deemed to be an “underwriter” within the meaning of the Securities Act and must, therefore, deliver a prospectus meeting the requirements of the Securities Act in connection with any resales of the Exchange Securities received by such Broker-Dealer in the Exchange Offer, which prospectus delivery requirement may be satisfied by the delivery by such Broker-Dealer of the Prospectus contained in the Exchange Offer Registration Statement. Such “Plan of Distribution” section shall also contain all other information with respect to such resales by Broker-Dealers that the Commission may require in order to permit such resales pursuant thereto, but such “Plan of Distribution” shall not name any such Broker-Dealer or disclose the amount of Initial Securities held by any such Broker-Dealer except to the extent required by the Commission.

     The Issuers shall use commercially reasonable efforts to keep the Exchange Offer Registration Statement continuously effective, supplemented and amended as required by the provisions of Section 6(c) hereof to the extent necessary to ensure that it is available for resales of Initial Securities acquired by Broker-Dealers for their own accounts as a result of market-making activities or other trading activities for a period ending on the earlier of (i) 180 days after the Consummation of the Exchange Offer and (ii) the date on which a Broker-Dealer is no longer required to deliver a prospectus in connection with market-making or other trading activities.

     The Issuers shall promptly provide copies of the latest version of such Prospectus to Broker-Dealers as may be reasonably requested at any time during such 180-day (or shorter as provided in the foregoing sentence) period in order to facilitate such resales.

     Section 4. Shelf Registration.

     (a) Shelf Registration. If (i) the Issuers are not required to file an Exchange Offer Registration Statement or to consummate the Exchange Offer because the Exchange Offer is not permitted by applicable law or Commission policy, (ii) for any reason the Exchange Offer is not Consummated within 40 Business Days after the Exchange Offer Registration Statement has become effective or (iii) with respect to any Holder of Transfer Restricted Securities, such Holder notifies the Partnership following the Consummation of the Exchange Offer that (A) because of any change in law or in currently prevailing interpretations of the staff of the Commission, such Holder (other than an Initial Purchaser holding Notes acquired directly from the Issuers) is prohibited by applicable law or Commission policy from participating in the Exchange Offer, or (B) such Holder may not resell the Exchange Securities acquired by it in the Exchange Offer to the public without delivering a prospectus and that the Prospectus contained in the Exchange Offer Registration Statement is not appropriate or available for such resales by such Holder, or (C) such Holder is a Broker-Dealer and holds Initial Securities acquired directly from an Issuer or one of its affiliates, then, in each case upon such Holder’s request in writing within 20 days after the Consummation of the Exchange Offer, the Issuers shall:

     (x) use commercially reasonable efforts to cause to be filed a shelf registration statement pursuant to Rule 415 under the Securities Act, which may be an amendment to the Exchange Offer Registration Statement (in either event, the “Shelf Registration Statement”), within 90 days after such filing obligation under clauses (i), (ii) or (iii) of clause (a) above arises (such date being the “Shelf Filing Deadline”), which Shelf Registration Statement shall provide for resales of all Transfer Restricted Securities the Holders of which shall have provided the information required pursuant to Section 4(b) hereof; and

     (y) use commercially reasonable efforts to cause such Shelf Registration Statement to be declared effective by the Commission on or before the 270th day after the date on which the filing obligation arises.

     The Issuers shall use commercially reasonable efforts to keep such Shelf Registration Statement continuously effective, supplemented and amended as required by the provisions of Sections 6(b) and (c) hereof to the extent necessary to ensure that it is available for resales of Initial Securities by the Holders of Transfer Restricted Securities entitled to the benefit of this Section 4(a) for a period of at least two years following the Closing Date (or shorter period (i) that will terminate when all the Initial Securities covered by such Shelf Registration Statement have been sold pursuant to such Shelf Registration Statement or (ii) as may be required pursuant to Rule 144(k) under the Securities Act). The Issuers shall be deemed not to have used commercially reasonable efforts to keep the Shelf Registration Statement effective during the requisite period if any of the Issuers voluntarily takes any action that would result in Holders of Transfer Restricted Securities covered thereby not being able to offer and sell such Transfer Restricted Securities during that period, unless (A) such action is required by applicable law; or

(B) such action is taken by any of the Issuers in good faith and for valid business reasons (not including avoidance of the Issuers obligations hereunder) including, but not limited to, a material business transaction or development such as the acquisition or divestiture of assets, so long as the Issuers promptly thereafter comply with the requirements of the last paragraph of Section 6(c) hereof (the period during which the Shelf Registration Statement is not available under clauses (A) or (B) above, the “Blackout Period”). The Blackout Period shall not exceed 45 days in any three-month period or 90 days in any twelve-month period.

     (b) Provision by Holders of Certain Information in Connection with the Shelf Registration Statement. No Holder of Transfer Restricted Securities may include any of its Transfer Restricted Securities in any Shelf Registration Statement pursuant to this Agreement unless and until such Holder furnishes to the Partnership in writing, within 20 days after receipt of a request therefor, such information as the Partnership may reasonably request for use in connection with any Shelf Registration Statement or Prospectus or preliminary Prospectus included therein. Each Holder as to which any Shelf Registration Statement is being effected agrees to furnish promptly to the Partnership all information required to be disclosed in order to make the information previously furnished to the Partnership by such Holder not materially misleading.

     Section 5. Additional Interest. If (i) any of the Registration Statements required by this Agreement is not filed with the Commission on or prior to the date specified for such filing in this Agreement, (ii) any of such Registration Statements has not been declared effective by the Commission on or prior to the date specified for such effectiveness in this Agreement (the “Effectiveness Target Date”), (iii) the Exchange Offer has not been Consummated within 40 Business Days after the Exchange Offer Registration Statement has become effective under the Securities Act or (iv) the Shelf Registration Statement or the Exchange Offering Registration Statement is filed and declared effective but shall thereafter cease to be effective or fail to be usable for its intended purpose, except during any Blackout Period, without being succeeded immediately by a post-effective amendment to such Registration Statement that cures such failure and that is itself immediately declared effective (each such event referred to in clauses (i) through (iv), a “Registration Default”), the Issuers hereby agree that the interest rate borne by the Transfer Restricted Securities shall be increased by 0.25% per annum during the 90-day period immediately following the occurrence of any Registration Default and shall increase by 0.25% per annum 90 days thereafter until all Registration Defaults have been cured, but in no event shall such aggregate additional interest exceed 0.5% per annum. Such additional interest to be paid pursuant to a Registration Default as set forth in this Section 5 is herein referred to as “Additional Interest.” The Issuers shall not be required to pay Additional Interest for more than one Registration Default at any given time. Following the cure of all Registration Defaults relating to any particular Transfer Restricted Securities, the interest rate borne by the relevant Transfer Restricted Securities will be reduced to the original interest rate borne by such Transfer Restricted Securities; provided, however, that, if after any such reduction in interest rate, a different Registration Default occurs, the interest rate borne by the relevant Transfer Restricted Securities shall again be increased pursuant to the foregoing provisions.

     All Additional Interest accrued pursuant to this Section 5 shall be paid in the manner provided for in the Indenture. All obligations of the Issuers set forth in the preceding paragraph that are outstanding with respect to any Transfer Restricted Security at the time such security

ceases to be a Transfer Restricted Security shall survive until such time as all such obligations with respect to such security shall have been satisfied in full.

     Section 6. Registration Procedures.

     (a) Exchange Offer Registration Statement. In connection with the Exchange Offer, the Issuers shall comply with all of the provisions of Section 6(c) hereof, shall use commercially reasonable efforts to effect such exchange to permit the sale of Transfer Restricted Securities being sold in accordance with the intended method or methods of distribution thereof. As a condition to its participation in the Exchange Offer pursuant to the terms of this Agreement, each Holder of Transfer Restricted Securities shall furnish, upon the request of the Issuers, prior to the Consummation thereof, a written representation to the Issuers (which may be contained in the letter of transmittal contemplated by the Exchange Offer Registration Statement) to the effect that (A) it is not an affiliate (within the meaning of Rule 405 under the Securities Act) of either of the Issuers, (B) it is not engaged in, and does not intend to engage in, and has no arrangement or understanding with any Person to participate in, a distribution of the Exchange Securities to be issued in the Exchange Offer and (C) it is acquiring the Exchange Securities in its ordinary course of business. In addition, all such Holders of Transfer Restricted Securities shall otherwise cooperate in the Issuers’ preparations for the Exchange Offer. Each Holder hereby acknowledges and agrees that any Broker-Dealer and any such Holder using the Exchange Offer to participate in a distribution of the securities to be acquired in the Exchange Offer (1) could not under Commission policy as in effect on the date of this Agreement rely on the position of the Commission enunciated in Morgan Stanley and Co., Inc. (available June 5, 1991) and Exxon Capital Holdings Corporation (available May 13, 1988), as interpreted in the Commission’s letter to Shearman & Sterling dated July 2, 1993, and similar no-action letters, and (2) must comply with the registration and prospectus delivery requirements of the Securities Act in connection with a secondary resale transaction and that such a secondary resale transaction should be covered by an effective registration statement containing the selling security holder information required by Item 507 or 508, as applicable, of Regulation S-K if the resales are of Exchange Securities obtained by such Holder in exchange for Initial Securities acquired by such Holder directly from the Issuers.

     (b) Shelf Registration Statement. In connection with the Shelf Registration Statement, the Issuers shall comply with all the provisions of Section 6(c) hereof and shall use commercially reasonable efforts to effect such registration to permit the sale of the Transfer Restricted Securities being sold in accordance with the intended method or methods of distribution thereof, and pursuant thereto the Issuers will prepare and file with the Commission a Registration Statement relating to the registration on any appropriate form under the Securities Act, which form shall be available for the sale of the Transfer Restricted Securities in accordance with the intended method or methods of distribution thereof.

     (c) General Provisions. In connection with any Registration Statement and any Prospectus required by this Agreement to permit the sale or resale of Transfer Restricted Securities (including, without limitation, any Registration Statement and the related Prospectus required to permit resales of Initial Securities by Broker-Dealers), the Issuers shall:

     (i) use commercially reasonable efforts to keep such Registration Statement continuously effective and provide all requisite financial statements for the period specified in Section 3 or 4 hereof, as applicable; upon the occurrence of any event that would cause any such Registration Statement or the Prospectus contained therein (A) to contain a material misstatement or omission or (B) not to be effective and usable for resale of Transfer Restricted Securities during the period required by this Agreement, the Issuers shall file promptly an appropriate amendment to such Registration Statement, in the case of clause (A), correcting any such misstatement or omission, and, in the case of either clause (A) or (B), use commercially reasonable efforts to cause such amendment to be declared effective and such Registration Statement and the related Prospectus to become usable for their intended purpose(s) as soon as practicable thereafter;

     (ii) prepare and file with the Commission such amendments and post-effective amendments to the applicable Registration Statement as may be necessary to keep the Registration Statement effective for the applicable period set forth in Section 3 or 4 hereof, as applicable, or such shorter period as set forth in this Agreement; cause the Prospectus to be supplemented by any required Prospectus supplement, and as so supplemented to be filed pursuant to Rule 424 under the Securities Act, and to comply fully with the applicable provisions of Rules 424 and 430A under the Securities Act in a timely manner; and comply with the provisions of the Securities Act with respect to the disposition of all securities covered by such Registration Statement during the applicable period in accordance with the intended method or methods of distribution by the sellers thereof set forth in such Registration Statement or supplement to the Prospectus;

     (iii) advise the lead or managing underwriter, if any, and selling Holders promptly and, if requested by such Persons, to confirm such advice in writing, (A) when the Shelf Registration Statement or any post-effective amendment thereto is filed and when the same has become effective, (B) of any request by the Commission for amendments to the Registration Statement or amendments or supplements to the Prospectus or for additional information relating thereto, (C)of the issuance by the Commission of any stop order suspending the effectiveness of the Registration Statement under the Securities Act or of the suspension by any state securities commission of the qualification of the Transfer Restricted Securities for offering or sale in any jurisdiction, and (D) of the existence of any fact or the happening of any event that makes any statement of a material fact made in the Registration Statement, the Prospectus, any amendment or supplement thereto, or any document incorporated by reference therein untrue, or that requires the making of any additions to or changes in the Registration Statement or the Prospectus in order to make the statements therein (with respect to the Prospectus, in the light of the circumstances under which they were made) not misleading. If at any time the Commission shall issue any stop order suspending the effectiveness of the Registration Statement, or any state securities commission or other regulatory authority shall issue an order suspending the qualification or exemption from qualification of the Transfer Restricted Securities under state securities or blue sky laws, the Issuers shall use commercially reasonable efforts to obtain the withdrawal or lifting of such order at the earliest possible time;

     (iv) in the case of a Shelf Registration Statement, furnish without charge to the Initial Purchasers, each selling Holder named in any Registration Statement, and each of the underwriter(s), if any, before filing with the Commission, copies of any Registration Statement or any Prospectus included therein or any amendments or supplements to any such Registration Statement or Prospectus, which documents will be subject to the review and comment of such Holders and underwriter(s) in connection with such sale, if any, for a period of at least two Business Days; and not file any such Registration Statement or Prospectus or any amendment or supplement to any such Registration Statement or Prospectus (including all such documents incorporated by reference) to which an Initial Purchaser of Transfer Restricted Securities covered by such Registration Statement or the lead or managing underwriter(s), if any, shall reasonably object in writing within two Business Days after the receipt thereof (such objection to be deemed timely made upon confirmation of telecopy transmission within such period;

     (v) in the case of a Shelf Registration Statement, make available during normal business hours for inspection by the Initial Purchasers, the managing underwriter(s), if any, participating in any disposition pursuant to such Shelf Registration Statement and any attorney or accountant retained by the Initial Purchasers or the lead or managing underwriter, all financial and other records, pertinent corporate documents and properties of the Issuers and cause the Issuers’ officers, directors and employees to supply all information reasonably requested by any such Holder, underwriter, attorney or accountant in connection with such Shelf Registration Statement or any post-effective amendment thereto subsequent to the filing thereof and prior to its effectiveness, in each case, that would customarily be reviewed in connection with a “due diligence” review of the Issuers;

     (vi) in the case of a Shelf Registration Statement, if requested by any Holder, promptly incorporate in such Prospectus, pursuant to a supplement, such information as such selling Holders and the lead or managing underwriter, if any, may reasonably request to have included therein, including, without limitation, information relating to the “Plan of Distribution” of the Transfer Restricted Securities, information with respect to the principal amount of Transfer Restricted Securities being sold to such underwriter(s), the purchase price being paid therefor and any other terms of the offering of the Transfer Restricted Securities to be sold in such offering; and make all required filings of such Prospectus supplement as soon as practicable after the Partnership is notified of the matters to be incorporated in such Prospectus supplement;

     (vii) in the case of a Shelf Registration Statement, furnish to each Initial Purchaser, each selling Holder and each of the underwriter(s), if any, without charge, at least one copy of such Shelf Registration Statement, as first filed with the Commission, and of each amendment thereto, including, if they so request, financial statements and schedules, all documents incorporated by reference therein and all exhibits (including exhibits incorporated therein by reference);

     (viii) in the case of a Shelf Registration Statement, deliver to each selling Holder and each of the underwriter(s), if any, without charge, as many copies of the Prospectus (including each preliminary prospectus) and any amendment or supplement

thereto as such Persons reasonably may request; the Issuers hereby consent to the use of the Prospectus and any amendment or supplement thereto by each of the selling Holders and each of the underwriter(s), if any, in connection with the offering and the sale of the Transfer Restricted Securities covered by the Prospectus or any amendment or supplement thereto;

     (ix) in the case of a Shelf Registration Statement, upon the request of a majority of the Holders of Transfer Restricted Securities, enter into such agreements (including an underwriting agreement), and make such representations and warranties, and take all such other actions in connection therewith in order to expedite or facilitate the disposition of the Transfer Restricted Securities in connection with any resale pursuant to any Shelf Registration Statement contemplated by this Agreement in an Underwritten Offering, the Issuers shall:

     (A) furnish to each Initial Purchaser, each selling Holder and each underwriter, if any, in such substance and scope as they may reasonably request and as are customarily made by issuers to underwriters in secondary underwritten offerings, upon the effectiveness of the Shelf Registration Statement:

     (1) opinions of counsel for the Issuers, covering such matters as are customarily covered in opinions requested in secondary underwritten offerings; and

     (2) a comfort letter from the Partnership’s registered independent public accountants, in the customary form and covering matters of the type customarily requested to be covered in comfort letters by underwriters in connection with secondary underwritten offerings;

     (B) enter into an underwriting agreement with the underwriters, or representatives thereof, that contains customary terms and provisions for an Underwritten Offering, including indemnification provisions in favor of the underwriters and the selling unitholders; and

     (C) deliver such other documents and certificates as may be reasonably requested by the Holders of a majority of the Transfer Restricted Securities to evidence compliance with Section 6(c)(viii)(A) above and with any customary conditions contained in the underwriting agreement or other agreement entered into by the Issuers pursuant to this Section 6(c)(viii), if any.

     If at any time the representations and warranties of the Issuers contemplated in Section 6(c)((A)(1) hereof cease to be true and correct, the Issuers shall so advise the Initial Purchasers and the underwriter(s), if any, and each selling Holder promptly and, if requested by such Persons, shall confirm such advice in writing;

     (ix) in the case of any Shelf Registration Statement, prior to any public offering of Transfer Restricted Securities pursuant thereto, cooperate with the selling Holders, the underwriter(s), if any, and their respective counsel in connection with the

registration and qualification of the Transfer Restricted Securities under the state securities or blue sky laws of such jurisdictions as the selling Holders or underwriter(s), if any, may request and do any and all other acts or things reasonably necessary or advisable to enable the disposition in such jurisdictions of the Transfer Restricted Securities covered by the Shelf Registration Statement; provided, however, that none of the Issuers shall be required to register or qualify as a foreign corporation where it is not then so qualified or to take any action that would subject it to the service of process in suits or to taxation in any jurisdiction where it is not then so subject;

     (x) in the case of a Shelf Registration Statement, cooperate with the selling Holders and the underwriter(s), if any, to facilitate the timely preparation and delivery of certificates representing Transfer Restricted Securities to be sold and not bearing any restrictive legends; and enable such Transfer Restricted Securities to be in such denominations and registered in such names as the Holders or the underwriter(s), if any, may request at least two Business Days prior to any sale of Transfer Restricted Securities made by such Holders or underwriter(s);

     (xi) if any fact or event contemplated by Section 6(c)(iii)(D) hereof shall exist or have occurred, prepare a supplement or post-effective amendment to the Registration Statement or related Prospectus or any document incorporated therein by reference or file any other required document so that, as thereafter delivered to the purchasers of Transfer Restricted Securities, the Prospectus will not contain an untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading;

     (xii) provide a CUSIP number for all Securities not later than the effective date of the Registration Statement covering such Securities and provide the Trustee under the Indenture with one or more global certificates for such Securities which are in a form eligible for deposit with The Depository Trust Company and take all other action necessary to ensure that all such Securities are eligible for deposit with The Depository Trust Company;

     (xiii) cooperate with and assist each selling Holder in connection with any filings required to be made with the NASD;

     (xiv) otherwise use commercially reasonable efforts to comply with all applicable rules and regulations of the Commission, and make generally available to its security holders, as soon as practicable, a consolidated earnings statement meeting the requirements of Rule 158 (which need not be audited) for the twelve-month period (A) commencing at the end of any fiscal quarter in which Transfer Restricted Securities are sold to underwriters in a firm commitment or best efforts Underwritten Offering or (B) if not sold to underwriters in such an offering, beginning with the first month of the Partnership’s first fiscal quarter commencing after the effective date of the Registration Statement; and

     (xv) cause the Indenture to be qualified under the Trust Indenture Act not later than the effective date of the first Registration Statement required by this Agreement, and, in connection therewith, cooperate with the Trustee and the Holders of Securities to effect such changes to the Indenture as may be required for such Indenture to be so qualified in accordance with the terms of the Trust Indenture Act; and to execute and use commercially reasonable efforts to cause the Trustee to execute, all documents that may be required to effect such changes and all other forms and documents required to be filed with the Commission to enable such Indenture to be so qualified in a timely manner.

     Each Holder agrees by acquisition of a Transfer Restricted Security that, upon receipt of any notice from the Partnership of the existence of any fact of the kind described in Section 6(c)(iii)(D) hereof or any Blackout Period described in Section 4(a) hereof, such Holder will forthwith discontinue disposition of Transfer Restricted Securities pursuant to the applicable Registration Statement until such Holder’s receipt of the copies of the supplemented or amended Prospectus contemplated by Section 6(c)(ix) hereof, or until it is advised (the “Advice”) by the Partnership that the use of the Prospectus may be resumed, and has received copies of any additional or supplemental filings that are incorporated by reference in the Prospectus. If so directed by the Partnership, each Holder will deliver to the Issuers (at the Partnership’s expense) all copies, other than permanent file copies then in such Holder’s possession, of the Prospectus covering such Transfer Restricted Securities that was current at the time of receipt of such notice. In the event the Partnership shall give any such notice, the time period regarding the effectiveness of such Registration Statement set forth in Section 3 or 4 hereof, as applicable, shall be extended by the number of days during the period from and including the date of the giving of such notice pursuant to Section 6(c)(iii)(D) hereof or notice of any Blackout Period to and including the date when each selling Holder covered by such Registration Statement shall have received the copies of the supplemented or amended Prospectus contemplated by Section 6(c)(ix) hereof or shall have received the Advice.

     Section 7. Registration Expenses.

     (a) All expenses incident to the Issuers’ performance of or compliance with this Agreement will be borne by the Issuers, jointly and severally, regardless of whether a Registration Statement becomes effective, including, without limitation: (i) all registration and filing fees and expenses (including filings made by any Initial Purchaser or Holder with the NASD); (ii) all fees and expenses of compliance with federal securities and state securities or blue sky laws; (iii) all expenses of printing (including printing certificates for the Exchange Securities to be issued in the Exchange Offer and printing of Prospectuses), messenger and delivery services and telephone; (iv) all fees and disbursements of counsel for the Issuers and, subject to Section 7(b) hereof, the Holders of Transfer Restricted Securities; (v) all application and filing fees in connection with listing the Exchange Securities on a securities exchange or automated quotation system pursuant to the requirements thereof; (vi) all fees and disbursements of independent certified public accountants of the Issuers (including the expenses of any special audit and comfort letters required by or incident to such performance) and (vii) all fees and disbursements of the Trustee and its counsel.

     The Issuers will, in any event, bear their internal expenses (including, without limitation, all salaries and expenses of their officers and employees performing legal or accounting duties), the expenses of any annual audit and the fees and expenses of any Person, including special experts, retained by the Issuers.

     (b) In connection with any Shelf Registration Statement, the Issuers, jointly and severally, will reimburse the Holders of Transfer Restricted Securities being registered pursuant to the Shelf Registration Statement for the reasonable fees and disbursements of not more than one counsel, who shall be Vinson & Elkins L.L.P. or such other counsel as may be chosen by the Holders of a majority in principal amount of the Transfer Restricted Securities for whose benefit such Registration Statement is being prepared.

     Section 8. Indemnification.

     (a) The Issuers, jointly and severally, agree to indemnify and hold harmless (i) each Holder and (ii) each Person, if any, who controls (within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act) any such Holder or is controlled by such Holder (any of the Persons referred to in this clause (ii) being hereinafter referred to as a “Participant”) (any Person referred to in clause (i) or (ii) may hereinafter be referred to as an “Indemnified Holder”), to the fullest extent lawful, from and against any and all losses, claims, damages or liabilities (including, without limitation, and as incurred, reimbursement of each such Indemnified Holder for any legal or other expenses reasonably incurred by them in connection with investigating or defending any such loss, claim, damage, liability) arising out of or based upon any untrue statement or alleged untrue statement of a material fact contained in any Registration Statement or Prospectus (or any amendment or supplement thereto), or any omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein (with respect to the Prospectus, in the light of the circumstances under which they were made) not misleading, except insofar as such losses, claims, damages, liabilities or actions are caused by an untrue statement or omission or alleged untrue statement or omission that is made in reliance upon and in conformity with information relating to any of the Holders furnished in writing to the Partnership by or on behalf of any of the Holders expressly for use therein. This indemnity agreement shall be in addition to any liability that the Issuers may otherwise have.

     In case any action or proceeding (including any governmental or regulatory investigation or proceeding) shall be brought or asserted against any of the Indemnified Holders with respect to which indemnity may be sought against either Issuer, such Indemnified Holder (or the Indemnified Holder controlled by or controlling such Participant) shall promptly notify the Issuers in writing; provided, however, that the failure to give such notice shall not relieve any of the Issuers of its obligations pursuant to this Agreement unless either Issuer is materially prejudiced by such delay. Upon the request of an Indemnified Holder, the Issuers shall retain counsel reasonably satisfactory to such Indemnified Holder to represent such Indemnified Party and any others the Issuers may designate in such proceeding and the fees and expenses of such counsel shall be paid, as incurred, by the Issuers. The Issuers shall not, in connection with any one such action or proceeding or separate but substantially similar or related actions or proceedings in the same jurisdiction arising out of the same general allegations or circumstances, be liable for the reasonable fees and expenses of more than one separate firm of attorneys (in

addition to any local counsel) at any time for such Indemnified Holders. The Issuers shall not be liable for any settlement of any such action or proceeding effected without the Issuers’ prior written consent, but if settled with such consent, the Issuers agree to indemnify and hold harmless any Indemnified Holder from and against any loss, claim, damage or liability by reason of such settlement. The Issuers shall not, without the prior written consent of each Indemnified Holder, settle or compromise or consent to the entry of judgment in or otherwise seek to terminate any pending or threatened action, claim, litigation or proceeding in respect of which indemnification or contribution may be sought hereunder (whether or not any Indemnified Holder is a party thereto), unless such settlement, compromise, consent or termination includes an unconditional release of each Indemnified Holder from all liability arising out of such action, claim, litigation or proceeding.

     (b) Each Holder of Transfer Restricted Securities agrees, severally and not jointly, to indemnify and hold harmless the Issuers, the officers and directors of the Issuers who sign a Registration Statement, any Person controlling (within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act) either Issuer, the Initial Purchasers and the other selling Holders , to the same extent as the foregoing indemnity from the Issuers to each of the Indemnified Holders, but only with respect to claims and actions based on information relating to such Holder furnished in writing by or on behalf of such Holder expressly for use in any Registration Statement or Prospectus. In case any action or proceeding shall be brought against the Issuers or their respective directors or officers or any such Participant in respect of which indemnity may be sought against a Holder of Transfer Restricted Securities, such Holder shall have the rights and duties given the Issuers, and the Issuers, their respective directors and officers and such Participant shall have the rights and duties given to each Holder by the preceding paragraph. This indemnity agreement shall be in addition to any liability that the Holders of Transfer Restricted Securities may otherwise have.

     (c) If the indemnification provided for in this Section 8 is unavailable to an indemnified party under Section 8(a) or (b) hereof (other than by reason of exceptions provided in those Sections) in respect of any losses, claims, damages, or liabilities or actions referred to therein, then each applicable indemnifying party, in lieu of indemnifying such indemnified party, shall contribute to the amount paid or payable by such indemnified party as a result of such losses, claims, damages, liabilities (including any reasonable legal or other expenses reasonably incurred in connection with investigating or defending same) in such proportion as is appropriate to reflect the relative fault of the Issuers, on the one hand, and the Holders, on the other hand, in connection with the statements or omissions which resulted in such losses, claims, damages, liabilities or actions, as well as any other relevant equitable considerations. The relative fault of the Issuers on the one hand and of the Indemnified Holder on the other shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information supplied by the Issuers, on the one hand, or the Indemnified Holders, on the other hand, and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission. The amount paid or payable by a party as a result of the losses, claims, damages, liabilities or actions referred to above shall be deemed to include, subject to the limitations set forth in the second paragraph of Section 8(a) hereof, any legal or other fees or expenses reasonably incurred by such party in connection with investigating or defending any action or claim.

     The Issuers and each Holder of Transfer Restricted Securities agree that it would not be just and equitable if contribution pursuant to this Section 8(c) were determined by pro rata allocation (even if the Holders were treated as one entity for such purpose) or by any other method of allocation which does not take account of the equitable considerations referred to in the immediately preceding paragraph. The amount paid or payable by an indemnified party as a result of the losses, claims, damages, liabilities or actions referred to in the immediately preceding paragraph shall be deemed to include, subject to the limitations set forth above, any reasonable legal or other expenses reasonably incurred by such indemnified party in connection with investigating or defending any such action or claim. Notwithstanding the provisions of this Section 8, none of the Holders (and its related Indemnified Holders) shall be required to contribute, in the aggregate, any amount in excess of the amount by which the aggregate price at which Transfer Restricted Securities were sold by such Holder exceeds the amount of any damages which such Holder has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. No Person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled to contribution from any Person who was not guilty of such fraudulent misrepresentation. The Holders’ obligations to contribute pursuant to this Section 8(c) are several in proportion to the respective principal amount of Initial Securities held by each of the Holders hereunder and not joint.

     Section 9. Rule 144 and 144A Information. The Issuers hereby agree with each Holder, for so long as any Transfer Restricted Securities remain outstanding, to make available to any Holder or beneficial owner of Transfer Restricted Securities in connection with any sale thereof and any prospective purchaser of such Transfer Restricted Securities from such Holder or beneficial owner, the information required by Rule 144A(d)(4) under the Securities Act in order to permit resales of such Transfer Restricted Securities pursuant to Rule 144A under the Securities Act.

     Section 10. Participation in Underwritten Offerings. No Holder may participate in any Underwritten Offering hereunder unless such Holder (a) agrees to sell such Holder’s Transfer Restricted Securities on the basis provided in any underwriting arrangements approved by the Persons entitled hereunder to approve such arrangements and (b) completes and executes all reasonable questionnaires, powers of attorney, indemnities, underwriting agreements, lock-up letters and other documents required under the terms of such underwriting arrangements.

     Section 11. Selection of Underwriters. The Holders of Transfer Restricted Securities covered by the Shelf Registration Statement who desire to do so may sell such Transfer Restricted Securities in an Underwritten Offering. In any such Underwritten Offering, the investment banker(s) and managing underwriter(s) that will administer such offering will be selected by the Holders of a majority in aggregate principal amount of the Transfer Restricted Securities included in such offering; provided, however, that such investment banker(s) and managing underwriter(s) must be reasonably satisfactory to the Issuers.

     Section 12. Miscellaneous.

     (a) Remedies. The provisions for Additional Interest in Section 5 during a Registration Default shall be the only monetary remedy available to Holders hereunder. The

Issuers hereby agree that monetary damages would not be adequate compensation for any loss incurred by reason of a breach by them of any other provisions of this Agreement and hereby agree to waive the defense in any action for specific performance that a remedy at law would be adequate.

     (b) No Inconsistent Agreements. The Issuers have not and, on or after the date of this Agreement will not enter into any agreement with respect to its securities that is inconsistent with the rights granted to the Holders in this Agreement or otherwise conflicts with the provisions hereof. The rights granted to the Holders hereunder do not in any way conflict with and are not inconsistent with the rights granted to the holders of the Issuers’ securities under any agreement in effect on the date hereof.

     (c) Amendments and Waivers. The provisions of this Agreement may not be amended, modified or supplemented, and waivers or consents to or departures from the provisions hereof may not be given unless the Issuers have obtained the written consent of Holders of a majority of the outstanding principal amount of Transfer Restricted Securities. Notwithstanding the foregoing, a waiver or consent to departure from the provisions hereof that relates exclusively to the rights of Holders whose securities are being tendered pursuant to the Exchange Offer and that does not affect directly or indirectly the rights of other Holders whose securities are not being tendered pursuant to such Exchange Offer may be given by the Holders of a majority of the outstanding principal amount of Transfer Restricted Securities being tendered or registered; provided, however, that, with respect to any matter that directly or indirectly affects the rights of any Initial Purchaser hereunder, the Issuers shall obtain the written consent of each such Initial Purchaser with respect to which such amendment, qualification, supplement, waiver, consent or departure is to be effective.

     (d) Notices. All notices and other communications provided for or permitted hereunder shall be made in writing by hand-delivery, first-class mail (registered or certified, return receipt requested), telex, telecopier, or air courier guaranteeing overnight delivery:

     (i) if to a Holder, at the address set forth on the records of the Registrar under the Indenture, with a copy to the Registrar under the Indenture;

     (ii) if to the Issuers, initially at their addresses set forth in the Purchase Agreement;

     (iii) if to the Initial Purchasers, initially at the address or addresses set forth in the Purchase Agreement with respect to the Representatives.

     All such notices and communications shall be deemed to have been duly given: at the time delivered by hand, if personally delivered; five Business Days after being deposited in the mail, postage prepaid, if mailed; when answered back, if telexed; when receipt acknowledged, if telecopied; and on the next Business Day, if timely delivered to an air courier guaranteeing overnight delivery.

     Copies of all such notices, demands or other communications shall be concurrently delivered by the Person giving the same to the Trustee at the address specified in the Indenture.

     (e) Successors and Assigns. This Agreement shall inure to the benefit of and be binding upon the successors and assigns of each of the parties, including, without limitation, and without the need for an express assignment, subsequent Holders of Transfer Restricted Securities; provided, however, that this Agreement shall not inure to the benefit of or be binding upon a successor or assign of a Holder unless and to the extent such successor or assign acquired Transfer Restricted Securities from such Holder.

     (f) Counterparts. This Agreement may be executed in any number of counterparts and by the parties hereto in separate counterparts, each of which when so executed shall be deemed to be an original and all of which taken together shall constitute one and the same agreement.

     (g) Headings. The headings in this Agreement are for convenience of reference only and shall not limit or otherwise affect the meaning hereof.

     (h) Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO THE CONFLICTS OF LAW RULES THEREOF.

     (i) Severability. In the event that any one or more of the provisions contained herein, or the application thereof in any circumstance, is held invalid, illegal or unenforceable, the validity, legality and enforceability of any such provision in every other respect and of the remaining provisions contained herein shall not be affected or impaired thereby.

     (j) Entire Agreement. This Agreement is intended by the parties as a final expression of their agreement and intended to be a complete and exclusive statement of the agreement and understanding of the parties hereto in respect of the subject matter contained herein. There are no restrictions, promises, warranties or undertakings, other than those set forth or referred to herein with respect to the registration rights granted by the Issuers with respect to the Transfer Restricted Securities. This Agreement supersedes all prior agreements and understandings among the parties with respect to such subject matter.

[Signature page follows.]

     IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first written above.

		WILLIAMS PARTNERS L.P.
		By:		Williams Partners GP LLC, its General Partner
		By:		/s/ S. J. Malcolm
		Name:		Steven J. Malcolm
		Title:		Chief Executive Officer
		WILLIAMS PARTNERS FINANCE CORPORATION
		By:		/s/ S. J. Malcolm
		Name:		Steven J. Malcolm
		Title:		Chief Executive Officer

The foregoing Agreement is hereby confirmed and accepted as of the date first above written.
For themselves and the other several Initial Purchasers named in Schedule I to the Purchase Agreement.
CITIGROUP GLOBAL MARKETS INC.
By:		/s/ Michael Casey
		Name: Michael Casey
		Title: Vice President
LEHMAN BROTHERS INC.
By:		/s/ Rob Pierce
		Name: Rob Pierce
		Title: Managing Director

Signature Page to Registration Rights Agreement