<SEC-DOCUMENT>0001193125-19-186050-index.html : 20190628
<SEC-HEADER>0001193125-19-186050.hdr.sgml : 20190628
<ACCEPTANCE-DATETIME>20190628161903
ACCESSION NUMBER:		0001193125-19-186050
CONFORMED SUBMISSION TYPE:	424B3
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20190628
DATE AS OF CHANGE:		20190628

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MPLX LP
		CENTRAL INDEX KEY:			0001552000
		STANDARD INDUSTRIAL CLASSIFICATION:	PIPE LINES (NO NATURAL GAS) [4610]
		IRS NUMBER:				270005456
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		424B3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-231798
		FILM NUMBER:		19929650

	BUSINESS ADDRESS:	
		STREET 1:		200 E. HARDIN STREET
		CITY:			FINDLAY
		STATE:			OH
		ZIP:			45840
		BUSINESS PHONE:		(419) 421-2159

	MAIL ADDRESS:	
		STREET 1:		200 E. HARDIN STREET
		CITY:			FINDLAY
		STATE:			OH
		ZIP:			45840
</SEC-HEADER>
<DOCUMENT>
<TYPE>424B3
<SEQUENCE>1
<FILENAME>d745690d424b3.htm
<DESCRIPTION>424B3
<TEXT>
Document 1 - file: d745690d424b3.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g745690g10s16.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g745690g10s16.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g745690g89l09.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g745690g89l09.jpg

</DOCUMENT>
</SEC-DOCUMENT>