UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

                               ________________

                                   FORM 10-K

(Mark One)

     [X]  ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934

     For the fiscal year ended:   December 31, 2003
                                  -----------------

                                      OR

     [ ]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934

     For the transition period from ________________ to ________________

                     Commission file number:  333-101101-07
                                              -------------


                                  CWABS, Inc.
                  CWABS Master Trust, Series 2003-B Subtrust,
         Revolving Home Equity Loan Asset Backed Notes, Series 2003-B
         ------------------------------------------------------------
            (Exact name of Registrant as specified in its charter)


           Delaware                                      95-4449516
-------------------------------             ------------------------------------
(State or other jurisdiction of             (IRS Employer Identification Number)
incorporation or organization)

c/o    Countrywide Home Loans, Inc.
       4500 Park Granada
       Calabasas, California                                91302
----------------------------------------    ------------------------------------
(Address of principal executive offices)                 (Zip Code)

Registrant's telephone number, including area code:   (818) 225-3000
                                                      --------------

Securities registered pursuant to Section 12(b) of the Act:  None
                                                             ----

Securities registered pursuant to Section 12(g) of the Act:  None
                                                             ----



<PAGE>


Indicate by check mark whether the Registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
Registrant was required to file such reports), and (2) has been subject to
such filing requirements for the past 90 days.  Yes  X  No
                                                    ---    ---

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405
of Regulation S-K (ss.229.405 of this chapter) is not contained herein, and
will not be contained, to the best of Registrant's knowledge, in definitive
proxy or information statements incorporated by reference in Part III of this
Form 10-K or any amendment to this Form 10-K. [ ]

Indicate by check mark whether the registrant is an accelerated filer (as
defined in Rule 12b-2 of the Act.) Yes     No  X
                                       ---    ---

State the aggregate market value of the voting and non-voting common equity
held by non-affiliates of the Registrant:  Not applicable
                                           --------------

Indicate the number of shares outstanding of each of the registrant's classes
of common stock, as of December 31, 2003:  Not applicable
                                           --------------




<PAGE>

DOCUMENTS INCORPORATED BY REFERENCE

                                     None.

                              *        *        *


     This Annual Report on Form 10-K (the "Report") is filed with respect to a
trust entitled CWABS Master Trust (the "Master Trust"), a business trust
formed under the laws of the State of Delaware pursuant to the master trust
agreement (the "Master Trust Agreement"), dated as of August 28, 2000, between
CWABS, Inc., as depositor, and Wilmington Trust Company, as owner trustee (the
"Owner Trustee"), and the subtrust created under the Master Trust entitled the
Series 2003-B Subtrust (together with the Master Trust, the "Trust"), formed
pursuant to a Series 2003-B Trust Supplement, dated as of February 28, 2003
(the "Series Trust Supplement"), among CWABS, Inc. (the "Company") and the
Owner Trustee, for the issuance of CWABS, Inc., Revolving Home Equity Loan
Asset Backed Securities, Series 2003-B (the "Securities"), issued pursuant to
an Indenture, dated February 28, 2003 (the "Indenture"), between the Master
Trust and Bank One, National Association, as indenture trustee (the
"Trustee"). The assets of the Trust will be comprised of assets sold to the
Trust pursuant to a sale and servicing agreement, dated February 28, 2003 (the
"Sale and Servicing Agreement") among the Company, as depositor, Countrywide
Home Loans, Inc., as sponsor and master servicer (the "Master Servicer"), the
Master Trust and the Trustee, as indenture trustee. Certain information
otherwise required to be included in this Report by the Instructions to Form
10-K has been omitted in reliance on the relief granted by the Commission to
other companies in similar circumstances, in particular, the relief granted in
CWMBS, Inc. (February 3, 1994) (collectively, the "Relief Letters").



<PAGE>



                                    PART I

ITEM 1.   BUSINESS

          Not applicable. See the Relief Letters.

ITEM 2.   PROPERTIES

          Not applicable. See the Relief Letters.

ITEM 3.   LEGAL PROCEEDINGS

          There were no material pending legal proceedings relating to the
          Trust to which any of the Trust, the Trustee, the Master Servicer or
          the Company was a party or of which any of their respective
          properties was the subject during the fiscal year covered by this
          Report, nor is the Company aware of any such proceedings
          contemplated by governmental authorities.

ITEM 4.   SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

          No matter was submitted to a vote of Securityholders, and no
          Securityholder consent was solicited during the fiscal year covered
          by this Report.



<PAGE>

                                    PART II


ITEM 5.   MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS

          (a)  Item 201 of Regulation S-K:

               i.   Market Information. There is no established public trading
                    market for the Certificates.

               ii.  Holders. As of December 31, 2003 there were less than 300
                    holders of record of the Certificates.

               iii. Dividends. Not applicable. See the Relief Letters.
                    (Information as to distributions to Certificateholders is
                    provided in the Registrant's monthly filings on Form 8-K.)

               iv.  Securities Authorized for Issuance Under Equity
                    Compensation Plans. Not applicable.

                    Item 701 of Regulation S-K. Not applicable. See the Relief
                    Letters.

          (b)  Rule 463 of the Securities Act of 1933. Not applicable. See the
               Relief Letters.

          (c)  Item 703 of Regulation S-K. Not applicable as the Registrant
               has no class of equity securities registered pursuant to
               section 12 of the Securities Exchange Act of 1934.

ITEM 6.   SELECTED FINANCIAL DATA

          Not applicable. See the Relief Letters.

ITEM 7.   MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
          RESULTS OF OPERATIONS

          Not applicable. See the Relief Letters.

ITEM 7A   QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

          Not applicable. See the Relief Letters

ITEM 8.   FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA


<PAGE>

          Not applicable. See the Relief Letters.

ITEM 9.   CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
          FINANCIAL DISCLOSURE

          None.


ITEM 9A.  CONTROLS AND PROCEDURES

          Not applicable. The Registrant is an Asset-Backed Issuer (as defined
          in Exchange Act Rule 15d-14(g)) and is therefore not required to
          disclose information under Item 307 of Regulation S-K. See Item 307
          of Regulation S-K and Exchange Act Rule 15d- 15(a). The Registrant
          is an Asset-Backed Issuer (as defined in Exchange Act Rule
          15d-14(g)) and is therefore not required to disclose information
          under Item 308 of Regulation S-K. See Instruction 2 to Item 308 of
          Regulation S-K and Exchange Act Rule 15d-15(a).


<PAGE>

                                   PART III


ITEM 10.  DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

          Not applicable. See the Relief Letters.

ITEM 11.  EXECUTIVE COMPENSATION

          Not applicable. See the Relief Letters.

ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

          Information required by Item 201(d) of Regulation S-K: Not
          applicable.

          Information required by Item 403 of Regulation S-K.

          (a)  Not applicable. See the Relief Letters.

          (b)  Not applicable. See the Relief Letters.

          (c)  Not applicable. See the Relief Letters.

ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

          Not applicable. See the Relief Letters.

ITEM 14.  PRINCIPAL ACCOUNTING FEES AND SERVICES

          Not applicable. The Registrant is an Asset-Backed Issuer (as defined
          in Exchange Act Rule 15d-14(g)) and is therefore not required to
          disclose this information. See Instructions to Item 14.


<PAGE>

                                    PART IV


ITEM 15.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K

          (a)  (1)  Pursuant to the Sale and Servicing Agreement, the Master
                    Servicer is required (i) to deliver an annual statement as
                    to compliance with the provisions of the Sale and
                    Servicing Agreement and certain other matters (the "Annual
                    Statement of the Master Servicer") and (ii) to cause a
                    firm of independent public accountants to deliver an
                    annual report as to compliance with the servicing
                    provisions of the Sale and Servicing Agreement (the
                    "Annual Report of the Firm of Accountants"). The Annual
                    Statement of the Master Servicer is attached as Exhibit
                    99.1 to this Report. The Annual Report of the Firm of
                    Accountants is attached as Exhibit 99.2 to this Report.
                    See Relief Letters.

               (2)  Not applicable.

               (3)  The required exhibits are as follows:

                    o    Exhibit 3(i): Copy of Company's Certificate of
                         Incorporation (Filed as an Exhibit to Registration
                         Statement on Form S-3 (File No. 33-11095)).

                    o    Exhibit 3(ii): Copy of Company's By-laws (Filed as an
                         Exhibit to Registration Statement on Form S-3 (File
                         No. 33-11095)).

                    o    Exhibit 4(i): Sale and Servicing Agreement (Filed as
                         part of the Registrant's Current Report on Form 8-K
                         filed on July 7, 2003).

                    o    Exhibit 4(ii): Indenture (Filed as part of the
                         Registrant's Current Report on Form 8-K filed on July
                         7, 2003).

                    o    Exhibit 31: Rule 15d-14(a) Certification.

                    o    Exhibit 99.1: Annual Statement of the Master
                         Servicer.


<PAGE>

                    o    Exhibit 99.2: Annual Report of the Firm of
                         Accountants.

                    o    Exhibit 99.3: Audited financial statements of
                         Financial Guaranty Insurance Company.

          (b)  Current Reports on Form 8-K filed during the last quarter ending
          December 31, 2003:


          Date of Current Report                        Item Reported
          ----------------------                        -------------

          October 15, 2003                   Monthly report sent to
                                             securityholders with the
                                             October 2003 distribution.

          November 17, 2003                  Monthly report sent to
                                             securityholders with the
                                             November 2003 distribution.

          December 15, 2003                  Monthly report sent to
                                             securityholders with the
                                             December 2003 distribution.


          (c)  See subparagraph (a)(3) above.

          (d)  Not applicable. See the Relief Letters.



<PAGE>

                                  SIGNATURES

     Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the Registrant has duly caused this Report to be signed
on its behalf by the undersigned, thereunto duly authorized.

                                    CWABS, INC.,
                                    CWABS MASTER TRUST, SERIES 2003-
                                    B SUBTRUST, REVOLVING HOME
                                    EQUITY LOAN ASSET BACKED
                                    SECURITIES, SERIES 2003-B

                                    By:    Countrywide Home Loans, Inc.,
                                           as Master Servicer*


                                    By:    Countrywide GP, Inc.


                                    By:    /s/ Joseph M. Candelario
                                           ------------------------
                                           Name:  Joseph M. Candelario
                                           Title:  First Vice President

                                    Date:  March 26, 2004








______________

*    This Report is being filed by the Master Servicer on behalf of the Trust.
     The Trust does not have any officers or directors.



<PAGE>



             SUPPLEMENTAL INFORMATION TO BE FURNISHED WITH REPORTS
          FILED PURSUANT TO SECTION 15(d) OF THE ACT BY REGISTRANTS
           WHICH HAVE NOT REGISTERED SECURITIES PURSUANT TO SECTION
                                12 OF THE ACT.


     No such annual report, proxy statement, form of proxy or other soliciting
material has been sent to Securityholders. See the Relief Letters.








<PAGE>

                                 EXHIBIT INDEX



Exhibit       Document
-------       --------


3(i)          Company's Certificate of Incorporation (Filed as an
              Exhibit to Registration Statement on Form S-3 (File No.
              33-11095))*

3(ii)         Company's By-laws (Filed as an Exhibit to Registration Statement
              on Form S-3 (File No. 33-11095))*

4(i)          Sale and Servicing Agreement (Filed as part of the
              Company's Current Report on Form 8-K filed on July 7,
              2003)*

4(ii)         Indenture (Filed as part of the Company's Current Report
              on Form 8-K filed on July 7, 2003)*

31            Rule 15d-14(a) Certification

99.1          Annual Statement of the Master Servicer

99.2          Annual Report of the Firm of Accountants

99.3          Audited financial statements of Financial Guaranty Insurance
              Company


______________

*    Incorporated herein by reference.