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

FORM 8-K

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

Date of Report (Date of earliest event reported) March 26, 2003 (March 25, 2003)

MARKWEST HYDROCARBON, INC.
(Exact name of registrant as specified in its charter)

Delaware	1-11566	84-1352233
(State or other jurisdiction of incorporation or organization)	(Commission File Number)	(I.R.S. Employer Identification Number)

155 Inverness Drive West, Suite 200, Englewood, CO 80112-5000
(Address of principal executive offices)

Registrant's telephone number, including area code: 303-290-8700

ITEM 5. OTHER EVENTS

        On March 25, 2003, MarkWest Hydrocarbon, Inc. issued the press release attached hereto as Exhibit 99.1.

ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS

(c)

Exhibits

99.1

Press Release dated March 25, 2003.

SIGNATURES

        Pursuant to the requirements of the Securities and Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	MARKWEST HYDROCARBON, INC. (Registrant)
Date: March 25, 2003	By:	/s/  DONALD C. HEPPERMANN Donald C. Heppermann, Senior Vice President and Chief Financial Officer

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ITEM 5. OTHER EVENTS
ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS

SIGNATURES