<SEC-DOCUMENT>0001552000-18-000027-index.html : 20180312
<SEC-HEADER>0001552000-18-000027.hdr.sgml : 20180312
<ACCEPTANCE-DATETIME>20180312165735
ACCESSION NUMBER:		0001552000-18-000027
CONFORMED SUBMISSION TYPE:	S-8
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20180312
DATE AS OF CHANGE:		20180312
EFFECTIVENESS DATE:		20180312

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:		S-8
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-223599
		FILM NUMBER:		18684145

	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>S-8
<SEQUENCE>1
<FILENAME>mplxs-8icp2018.htm
<DESCRIPTION>S-8
<TEXT>
Document 1 - file: mplxs-8icp2018.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>ex51.htm
<DESCRIPTION>EXHIBIT 5.1
<TEXT>
Document 2 - file: ex51.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>ex231.htm
<DESCRIPTION>EXHIBIT 23.1
<TEXT>
Document 3 - file: ex231.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24.1
<SEQUENCE>4
<FILENAME>exhibit241.htm
<DESCRIPTION>EXHIBIT 24.1
<TEXT>
Document 4 - file: exhibit241.htm

</DOCUMENT>
</SEC-DOCUMENT>